All posts by: Sarah Hansen, M.S. '15


New center director to take NASA-supported Earth science research into next era at UMBC

The UMBC-led Goddard Earth Science Technology and Research (GESTAR) Center II includes over 120 researchers advancing Earth and atmospheric sciences and launching the next generation of scientists. GESTAR II scientists and engineers are tracking the effects of shipping regulations on air pollution, predicting fires in India, and much more, often relying on data collected via remote sensing from NASA satellites. 

NASA awarded $72 million for UMBC to establish GESTAR II in fall 2021, in collaboration with primary partner Morgan State University and six other institutions. After a national search, a new director is taking the helm of this high-impact collaboration.

portrait of Charles Ichoku, wearing glasses and a suit.
Charles Ichoku (image courtesy of Ichoku)

The new director, Charles Ichoku, brings deep and well-rounded experience in Earth science research, at NASA, and in student development programs—exactly the elements GESTAR II brings together and hopes to expand upon. Ichoku comes to GESTAR II from concurrent roles as professor of Earth and environmental sciences at Howard University and as the Distinguished Scientist of the National Oceanic and Atmospheric Administration (NOAA) Cooperative Science Center in Atmospheric Sciences and Meteorology (NCAS-M). Prior to that, he served at NASA Goddard Space Flight Center in Greenbelt, Maryland for 20 years in various research and management roles.

“Dr. Ichoku brings impressive credentials to this important leadership position at UMBC, not only as a world-class scientist, but also as a long-term NASA-based scientist and program manager,” shares Karl V. Steiner, Vice President for Research and Creative Achievement at UMBC. “He is a perfect fit for both GESTAR II and UMBC.”

Earth science from hundreds of miles up

Ichoku’s research program focuses on applying remote sensing—collecting data from a significant distance, most often from satellites orbiting Earth—and other data to study large-scale processes that affect the environment on land, weather, and air quality. In addition to directing GESTAR II, Ichoku will have an appointment as professor of geography and environmental systems (GES) at UMBC, where he will continue to conduct research, mentor students, and teach courses.

“GES is a good fit,” Ichoku says, “because I’m not just looking at developing the approaches and instrumentation to measure specific parameters, but I’m interested in how you apply the data, knowledge, and science to actually understand phenomena that happen on the ground and in the atmosphere.”

grayscale image of swirlin clouds; righthand panel includes purple lines indicating ship tracks
An image collected by NASA’s MODIS satellite of the U.S. West Coast (left) shows tracks of air pollution generated by shipping traffic (purple lines, right), which was detected by a GESTAR II research team’s algorithm.

Elevating African research

Ichoku’s work is influenced by his youth in West Africa, and focuses on phenomena that especially affect that region. For example, frequent agricultural fires send various particles into the atmosphere, which can affect air quality, precipitation, and more. In addition, Lake Chad in Central Africa has nearly dried up over the last few decades in part because of severe drought, resulting in widespread conflict and suffering. Drought also sends dust and other particles into the atmosphere, affecting air quality. These particles and other environmental components (like clouds) interact with radiation from the Sun, driving processes that can adversely impact human life on Earth’s surface, Ichoku explains.

“I’m very interested in seeing research and the application of its results improve in Africa overall, but in particular in Western and Central Africa,” Ichoku says. “So I hope to be able to continue research in that region.”

five people stand on a roof, backed by wide blue sky and a distant view of the UMBC Library.
Belay Demoz, right, talks with students on the roof of the UMBC Physics Building. (Marlayna Demond ’11/UMBC)

To that end, a few years ago Ichoku joined with colleagues to initiate the U.S.-West African Coastal Resilience Research Consortium (CRRC). In addition, he recently played an important role  in the inauguration of the African Meteorological Society (AfMS), where he serves as chair of the Diaspora and Friends of Africa Committee. The committee involves a significant number of colleagues who are similarly passionate about the advancement of scientific research and applications in Africa.  

Those colleagues include GESTAR II’s inaugural director, Belay Demoz, whose research is similarly inspired by experiences with drought, displacement, and resulting conflict during his youth in East Africa—challenges that continue today. Demoz, professor of physics at UMBC, will continue in his departmental role after Ichoku takes up his post.

Demoz notes Ichoku’s extensive experience with Howard University (which is also a partner in UMBC’s Center for Space Sciences Technology) and at NASA as strengths, and shares his interest in expanding UMBC’s research and education efforts in Africa. “I’m looking forward to him leading the next iteration of GESTAR II, and increasing involvement of GES in what we do,” Demoz says.

Clearing the pathway for students

In addition to his own research, Ichoku has demonstrated a deep commitment to student research and success throughout his career. He moved from NASA to Howard and NCAS-M so he could focus more on student training, particularly supporting underrepresented minority students in Earth science.

With NCAS-M, on top of his typical professorial duties, Ichoku was responsible for matching students with appropriate research projects and NOAA mentors across 13 institutions. He also supported students’ success throughout their graduate projects, ensuring they persisted to graduation and were prepared to be competitive for sought-after professional roles, often at NOAA, NASA, or in academia.

With Demoz, Ichoku also served as co-PI for the NASA-funded Student Airborne Science Activation (SaSa) project, involving three NASA centers and six minority-serving Institutions, including UMBC. This past summer, 24 students, including four from UMBC, spent four weeks at UMBC as part of the SaSa program

large group of students in front of an airplane on a runway
Participants in the 2022 SaSa program at NASA Wallops Flight Facility. (Image courtesy of Belay Demoz)

Now at GESTAR II, Ichoku is interested in continuing to enhance the connection between researchers, who often conduct their work at Goddard Space Flight Center, and members of the larger UMBC community—including students at all levels.

“I think it’s a good thing for a researcher to connect with students. Even if they are not teaching them in a traditional class setting, they can be mentors for interns, which I did myself for many years while I was at NASA as a research scientist,” Ichoku says. “I know that our faculty have a lot to offer to our students, so I will do my best to help facilitate that. My role will be to support the clearing of the pathway and the removal of any obstacles.”

A shining example

Ichoku also brings to GESTAR II and UMBC substantial experience in deepening relationships across institutions. He already has relationships with the scientific leads at other GESTAR II institutions, such as the Pennsylvania State University, Arizona State University, and University of Colorado Boulder, and is excited to continue working with them in a new capacity. 

“When we start talking, ideas will flow,” Ichoku says. “We will then synthesize the ideas into strategic initiatives and make them happen.”

Moving forward, Ichoku plans to continue to emphasize top-quality research while enhancing opportunities for students and building bridges between the GESTAR II institutions. And he is especially looking forward to doing all of that at UMBC.

students walking between brick academic buildings; a dusting of snow on the trees
Students bustle through UMBC’s Academic Row on a winter day. (Marlayna Demond ’11/UMBC)

The opportunity to lead GESTAR II “is both a great pleasure and an honor for me, as I have always admired UMBC for being a shining example in all areas of university performance, including education, scholarship, research, innovation, technology, diversity, sports, environmental sustainability, and community outreach,” Ichoku says. “I am proud of UMBC for attaining the status of Carnegie R1 Doctoral Institution.”

“It is also a great blessing to have this wonderful opportunity to contribute to scientific discoveries and knowledge expansion for human advancement through NASA, and, in particular, Goddard Space Flight Center,” he adds. “I feel highly privileged to be involved in a program that connects two of the organizations that perform at the highest levels in their respective domains of activity, namely academia (UMBC) and space (NASA).” 

New “Life Magnified” USPS stamp series features Tagide deCarvalho’s images of microscopic life

Tagide deCarvalho, director of the Keith R. Porter Imaging Facility in UMBC’s College of Natural and Mathematical Sciences, produces artistic images that reveal microscopic life in vivid, thought-provoking ways. Her work combines her skill at the lab bench and behind the microscope with her artist’s eye, and it continues to earn her accolades worldwide. 

deCarvalho has been recognized repeatedly in the Nikon Small World Photomicrography Competition. In 2020, she won the 2019 Olympus Image of the Year Global Life Science Light Microscopy Award for an image of a tardigrade, also known as a “water bear.” This year, she won the 2022 Zeiss Microscopy Image Contest in the Life Sciences category. 

Smiling woman seated at a microscope
Tagide deCarvalho in front of a confocal microscope in the Keith R. Porter Imaging Facility at UMBC. (Melissa Cormier/UMBC)

“We use their equipment. I’m a big fan of their instruments, so it was nice to be recognized by that company,” deCarvalho says of the Zeiss award. The winning image portrayed bacteria that she scraped from her own tongue. At the time, she simply needed a quick sample to test some new materials for preparing specimens in the lab. Only later did she decide to refine the image into something beautiful. 

“My superpower is finding everyday specimens and making them glamorous,” deCarvalho says, a bit tongue in cheek. She recently learned that her images will now reach a larger audience than ever before.

Putting her stamp on the art world

This summer, deCarvalho received an exciting request: An art curator wanted to include two of her images in an upcoming collection—except this was no typical art exhibit. A United States Postal Service (USPS) curator wanted to include deCarvalho’s work in a stamp collection featuring microscope images. USPS officially announced the “Life Magnified” collection in December, and the stamps will become available later in 2023.

The USPS recognition holds special significance for deCarvalho, whose grandfather collected stamps. When he passed away, deCarvalho inherited his collection. Her grandfather was a physician-scientist, and deCarvalho enjoyed looking through his microscopes as a child. He always told his granddaughter she would be a scientist one day. 

A sheet of 20 stamps, each with a black background and brightly colored images as viewed through a microscope
The “Life Magnified” stamp series, set to be released later this year. deCarvalho’s images are the Moss Leaves (upper right) and Mold Spores (lower left). (Image courtesy of U.S. Postal Service)

deCarvalho has had a lifelong interest in art, too, and began her academic career as an art photography major. As an undergraduate, she wanted to learn to use microscopes to create art in a biological context. To that end, she worked for a faculty member at the University of New Mexico School of Medicine creating transmission electron microscope images. 

The professor was thrilled to work with a student who already knew how to develop film—the hardest thing to teach, and something deCarvalho had been doing for years in her own darkroom. In the lab, she started to learn techniques essential to her work today, but she never got to put her artistic talents to work. Instead, deCarvalho launched a scientific career, fulfilling her grandfather’s prophecy and eventually landing at UMBC in 2016. 

Once she arrived at UMBC, art finally returned to her life. “Suddenly I realized I could do it,” deCarvalho says. “I’d say it was about 20 years later. I came full circle.” 

Creating art, informing scientific research

The process of creating an artistic microscope image begins the exact same way as creating a research image. It’s only the post-processing that differs, deCarvalho explains. 

“I take things further than what might be considered ethical for a research image, where there are clear guidelines as to what you can do,” she says. In a research image, “You can’t manipulate the image to alter any of the content.” For her art, she removes distracting elements like debris around the main specimen, and emphasizes the specimen’s key elements in a way that makes it more visually engaging.

Her modifications “allow you to focus your attention on [the specimen] more, and to find it more aesthetically pleasing,” explains deCarvalho. She believes this makes viewers “more interested in the content than you would be if I hadn’t slightly altered it,” she says. “I think it makes it more compelling.”

Her artistic work can still inform scientific image production. “I push the limits of my expertise by doing these art images,” deCarvalho says. “I can bring some of the experience and new techniques that I learn in doing that back to the research. It goes both ways.” 

a transparent, roughly cylindrical blob outlined in neon blue-green, with its internal organs stained in different neon colors, including orange, blue, and green; black background
Tagide deCarvalho’s winning image of a tardigrade, or “water bear.” Tardigrades are approximately one millimeter long. (Image courtesy of deCarvalho)

For example, for the winning tardigrade image, “I came up with that staining just to create that pretty picture, and I’ve had tardigrade experts all across the world and people that use tardigrades in classrooms ask me for my technique, because they could see structures stained that they weren’t able to see before with the traditional staining techniques,” deCarvalho says. “So it informed research, just from me trying to make a nice picture.”

Public art, amplified

One of the images selected for “Life Magnified” features moss that deCarvalho scraped off the exterior of the UMBC Biological Sciences Building. “I feel like it’s kind of an homage to UMBC that one of the samples was taken right off the building,” she says. 

When asked about her motivations for turning microscope images into beautiful works of art, her answer was simple. “It’s super cheesy, but I just get so excited when I see things under the microscope,” she says. “I look through the microscope, and I just think, ‘Wow, I can’t believe that’s real, and that it just looks so amazing.’” Her art, she says, is “a way to capture the excitement and share it with other people.”

In addition to the connections to UMBC and to her grandfather, having her work on stamps is special because it grants her images the ultimate visibility, she explains. Stamps “are like a public art museum,” deCarvalho says. “Each one is like a little piece of art—it’s the most public art form. So when USPS approached me, I thought, ‘This is the highest honor.’” 

Manil Suri’s new book, “The Big Bang of Numbers,” introduces readers to the wonder of math

It’s rare to meet a mathematician who is also a bestselling novelist, but UMBC’s Manil Suri, professor of mathematics, is happy to be unique. Suri is the author of a famed trilogy named for Hindu gods, including The Death of Vishnu (2001), which was long-listed for the Booker Prize, The Age of Shiva (2008), and The City of Devi (2013). He recently published his latest book, The Big Bang of Numbers: How to Build the Universe Using Only Math, to global acclaim. 

The Big Bang of Numbers is Suri’s first nonfiction book, written to show people who aren’t necessarily fond of math that the discipline is foundational to our world—and can even be fun.

“The concept is intriguing, if hard to get your head around: Can you understand the creation of the universe purely through basic mathematics?” writes The Washingtonian. Suri’s answer with The Big Bang of Numbers is a resounding ‘yes.’ The book “explores many areas of seemingly pure math that explain the natural world, from the shapes of galaxies and living creatures to weather, gravity, beauty, and even art,” Kirkus Reviews writes.  

In his role as math professor, Suri works hard to convince his students that math doesn’t just matter, it is also endlessly interesting—extending his instruction well beyond the basics of calculations and into the field’s fundamental ideas. 

“All your life, you keep hearing that maths is all about calculations,” Suri told Telegraph India, “while in essence, maths is all about ideas.” Suri first expounded on this theme in a 2013 New York Times op-ed, “How to Fall in Love with Math.” When the op-ed became shockingly popular, the idea for a book grew from there.

Manil Suri speaks about The Big Bang of Numbers at a special event to mark the book’s publication and success on November 14 at UMBC’s Albin O. Kuhn Library & Gallery.

A new challenge

With The Big Bang of Numbers, which the Wall Street Journal has called “imaginative and organized,” Suri isn’t just seeking to help a wider audience understand or feel comfortable with math, but feel a sense of fascination with it. According to the Mathematical Association of America, Suri’s approach—rich in humor and narrative elements—goes beyond “simply telling the reader about these ideas”; instead, he “allow[s] readers to experience the attitude of curious exploration that attracts mathematicians to the discipline, but is often absent from low-level math classes.”

“With evocative and engaging examples ranging from multidimensional crochet to the Mona Lisa’s asymmetrical smile, as well as ingenious storytelling that helps illuminate complex concepts like infinity and relativity, The Big Bang of Numbers charts a playful, inventive course to existence,” writes the Deccan Herald, which named the book its “read of the week” in mid-October.

For Suri, while the book was very different in some ways from his previous works of fiction, The Big Bang of Numbers hews closely to his style that relies on humor and engaging narrative to draw the reader into unfamiliar topics. His novels all take place in India, a place that feels far away and unknown to many of his readers. “After explaining India in three internationally released books to many readers who didn’t know much about the country, I was ready to take on an even bigger challenge,” he told Frontline, a major English-language magazine in India, “—explaining mathematics to a general audience!”

Manil Suri speaks at GRIT-X, an event during UMBC’s Homecoming festivities, in 2018.

Math as a game

“Usually math is thought of as something that we invent, perhaps, to explain things around us. I’m kind of reversing this perspective and saying that math is the true driver of the universe, and the universe itself is a model of the mathematical principles,” Suri recently told NPR’s Marketplace.

Put another way, the Sunday Times of London explains the central thesis of the book is that “maths, the creative language in which reality is written, is ‘the life force that drives the universe,’ and you could build one—stars, worlds, you and me—from scratch using maths alone.” The review notes, “It sounds intimidating, but Suri has a knack for clarity and a welcome habit of grounding tricky concepts in the tangible.”

In the end, according to Suri’s book, math is a “force that forever enthralls, not just through the answers it gives but also through the new mysteries it poses.” But he hopes his readers will also understand math as a game. 

“For mathematicians, I suspect the most appealing characteristic of the subject is its playfulness,” Suri told Frontline. “Maths is a game in which you start with a bunch of rules and then deduce away to see where you can get. You can play it anywhere—in the shower, on the bus, while eating lunch—all you need is your mind.”

UMBC’s Matthew Baker and team study how urban trees respond to heat stress

On a sunny fall day in October, a handful of student and faculty researchers are scuttling around outside the Albin O. Kuhn Library and Gallery. High-tech instruments sprawl across folding tables, alongside lower-tech equipment like a hole-punch, glass jars, clippers, and Ziploc bags. A drone about the size of a couch cushion sits on the grass nearby, awaiting instructions.

A student returns from a tree a couple of hundred yards away with a small clipping in a vase-like jar, and the work begins. Different team members examine leaves using the full range of equipment on the tables, collecting different information with each instrument. 

Each month from May to October, the researchers complete this process 60 times over two days, collecting data from 60 different trees on UMBC’s main campus representing nine common species of urban trees. Plus, once an hour, the drone flies a pre-programmed route above campus, collecting additional information. Passing UMBC students occasionally stop to ask questions, and the team is happy to share their work.

Michael Alonzo, an assistant professor at American University, leads the project, and Matthew Baker, professor of geography and environmental systems at UMBC, is co-lead. Their students help out on the data collection days. The work also includes faculty and students from Temple University. The goal is to understand how the trees are responding to heat and moisture stress. By looking at trees from different species and in different locations, the research team can learn which trees might be most resilient in a warming world.

Innovation and transpiration

The UMBC campus, with its variety of tree habitats—like parking lots, grass fields, and natural areas—provides an excellent site to conduct the study. And because urban areas, which tend to include more pavement, are already experiencing higher temperatures on average than less developed areas, “Trees in these heat islands may provide a glimpse into the future about how they’ll respond elsewhere,” Baker says. 

The instruments on the tables can measure things like how much and which wavelengths of light individual leaves are absorbing and their rate of photosynthesis. There are also sensors placed directly on the trees, which collect data in real time. A sensor in a metal box on each tree measures the rate at which water is flowing from its roots to its leaves, a process known as transpiration that is central to the water cycle. An instrument called a Scholander pressure bomb looks at a similar measure, but in the leaves. By gradually applying more pressure to a single leaf, it detects how hard the water is being pulled as it journeys from the roots, to the leaves, to the atmosphere.

By comparing the rates of photosynthesis and transpiration, which are typically closely linked, the researchers can see if the relationship between the two processes is shifting under stress. 

It’s a bird, it’s a plane, it’s… a research drone?

The team also uses a drone with a thermal camera to measure the heat signature of the tree canopy compared to the surrounding environment. “As long as the canopy is transpiring, the canopy should appear cooler than nearby pavement in our imagery,” Baker says. That temperature difference between the canopy and the surroundings can help determine how much transpiration is happening.

The researchers compare the findings from the drone’s hourly flights with what they’re seeing on the ground. “We’re in the ‘do we trust you’ phase of the relationship” with the drone and its data, Alonzo says. The hope is that if the drone data matches the ground data well enough, the team can use it to gather the same information in a much less labor-intensive way and over larger geographic areas.

Permission to use the drone also required cooperation and trust-building with several UMBC departments, such as UMBC Police, environmental safety and health, and facilities management, as well as BWI Airport. This project is the first time drones have been allowed on campus for research, following a recent revision of federal aviation and campus safety policies.

Growing the fleet

In addition to the thermal camera on the drone, the team is using a hyperspectral camera (on loan from NASA) to collect imagery from the roofs of both the library and the Physics Building. Hyperspectral imagery provides information about canopy stress, water content, and leaf pigments like chlorophyll, which drive photosynthesis. Next year, they hope to have this camera mounted on a drone, too. Together, these two cameras collecting data from above “are the link to being able to perform similar measurements over much broader areas, like metropolitan Baltimore, with airborne or spaceborne platforms,” Baker says. 

In fact, the team has already started related work in 11 other cities in the Eastern U.S., including research on how trees help cool cities using data from Washington, DC.

The study on campus is already turning up differences in how various tree species respond to warming. The team discovered that some species intermittently reduce their transpiration rate, possibly as a stress response. Some trees even stop the process altogether during the hottest part of the day—a phenomenon Alonzo calls a “tree siesta.”

It remains to be seen if photosynthesis slows down along with transpiration. If it does, this could indicate that the trees are prioritizing protective measures to prevent overheating and water loss over growth. A reduced growth rate would also reduce the amount of carbon the trees are taking out of the atmosphere, which is an important factor when estimating how much planting trees could benefit the future climate.

Two researchers stand outdoors over a folding table. One is taking notes, a second pointing to the first's notepad. A tree clipping sits in a glass jar on the table. In the background, another researcher peers into an instrument. The sun is shining.
Matthew Baker (right), Michael Alonzo (left), and Josh Caplan (center) collect tree data outside the Albin O. Kuhn Library and Gallery. (Sarah Hansen, M.S. ’15/UMBC)

Informing the future

All aspects of the project have involved undergraduate and graduate students. More than 15 students have contributed, including Caitlin Beckjord ’23, geography and environmental systems, who first got involved in forest research through a summer project while she was a student at Howard Community College. Micah Polsky ’25, geography and environmental systems, has a leading role in a complementary study with the USDA Forest Service. They take precise weekly measurements of the trees’ girth—another way to measure their water status as well as their growth rate. 

Faculty teach each student how to use the full range of instruments used in this study, making this project an excellent training opportunity for students in majors from environmental science to physics or information systems. The project brings together important new details about how trees are responding to stress, testing and verification of new technologies, and student engagement and training in a way that is likely to have a significant impact on the participants and the future of this research field. 

A Space of One’s Own

On a chilly morning in early spring 2022, Eileen Meyer, Roy Prouty, and Erik Crowe were on the roof of the UMBC Physics Building. They were inside the observatory dome, trying to figure out what had gone wrong with the 32-inch telescope installed when the building was constructed in 1999. They had already determined that the shutters designed to keep dust off the mirrors were jammed, rendering the telescope temporarily unusable.

“So we’re up there with flashlights and ladders that are not quite tall enough,” Meyer recalls, “trying to figure out what is happening and realizing that some of the motors have died.” They weren’t terribly surprised, given the age of the instrument and the harsh conditions on the roof of a building: extreme heat in summer and cold in winter as well as high humidity. At one point, Meyer says, birds unfortunately had to be evicted from one of the ventilation grates, but not before they had spread debris around the dome.

A professor in a white shirt and green sweater stands on a ladder while showing students parts of a giant telescope
Eileen Meyer works on the observatory telescope with some of her students. (Marlayna Demond ’11/UMBC)

As someone who decided as a first-year graduate student that hands-on lab work wasn’t really her thing, Meyer may seem an unlikely candidate for climbing ladders, ordering parts, and figuring out wiring as the observatory refurbishment lead. In fact, Meyer, associate professor of physics, has spent the better part of the last decade using computers (often the “super” variety) to conduct astrophysics research, mostly on black holes (the supermassive variety)—but she is finding fulfillment in expanding her work.

“That’s the beauty of having a career that is hitting its mid-stage,” Meyer says. “You can start trying different things.”

Leaning into the turning points

a text break designed to show a telescope image of stars

The telescope renovation project is a symbol of Meyer’s evolution as a scientist. Because it requires expertise outside her wheelhouse, it’s enhancing her management and delegation skills, she says, and allowing her to collaborate with a wider range of students and colleagues, including engineers. Plus, the upgraded telescope will enable other projects she’s diving into now, creating new opportunities at a turning point in her career, she says.

When it was built, the observatory was a state-of-the-art facility, designed to conduct observations of the near-Earth atmosphere and to serve as a public-outreach tool. The latter function is still underway today, with programming offered by observatory director and current Ph.D. student Roy Prouty, M.S. ’16, atmospheric physics, but the aging of the telescope and its original cameras means it is no longer up to the task of cutting-edge research.

With generous financial support from the College of Natural and Mathematical Sciences and hands-on help from people like Prouty and Crowe, the Physics Building manager, Meyer says, “The goal is to modernize the observatory and bring it up to the level of something that we can actually put research-grade equipment on and do observations.”

The beauty of physics

a text break designed to show a telescope image of stars

While the details of Meyer’s research might be shifting, her overall drive to conduct research and create knowledge are longstanding and unchanged. “I always wanted to be a scientist from as soon as I knew what that was,” Meyer reflects—although astronomy was something “I fell into by degrees,” she says.

As an undergraduate at Rice University in Houston, physics won her over because “it’s so beautiful,” she says. “It’s this interplay of the natural world and the mathematical descriptions you can make of it. It can be deceptively simple.”

A professor shows a piece of equipment on a desk to two students
Meyer works with two students in her lab. (Marlayna Demond ’11/UMBC)

“And once you’ve been trained as a physicist, it’s something you can’t turn off,” she adds. “You’re driving down the highway, and you see something oscillating on a truck, and you start to think how you could model this with equations …You start seeing these things everywhere, and it explains to you why the world works the way it does. It takes away a lot of the mystery, but it does it in a beautiful way.”

Meyer initially pursued particle physics, thinking that was the frontier—the field where she could ask fundamental questions about the rules by which the universe operates. But after changing advisors early in her graduate career for a better personality match, she found herself in an astronomy research group, and has stuck with it since. “It turns out that astronomical observations allow us to constrain fundamental physics,” she says, “so it’s not like I went away from that after all.”

Plasma jets and giant mergers

a text break designed to show a telescope image of stars

To date, her work has largely focused on “understanding why black holes do what they do,” Meyer says, with a good deal of it focused on the giant jets of extremely high-energy plasma that often stream from them in opposite directions. The jets can be bigger than entire galaxies, carrying tremendous amounts of energy and material, Meyer explains. “And galaxies are enormous,” she adds. “Those themselves are already hard to imagine, they’re so big.”

Supermassive black holes, while denser than anything known in the universe, can have a volume about the size of our solar system. “It’s unbelievably tiny compared to the scale of the chaos that they’re unleashing” with their jets, Meyer says. The existence of the jets “was something that nobody predicted,” she adds. Even in the 1960s, some scientists were still arguing that black holes themselves (forget about their jets!) did not exist. Today, black holes are well established, but, Meyer says, “it’s still a major open question—how do they produce these jets?”

Black holes and their jets “are basically super extreme environments, so they’re interesting to study and to try to understand,” Meyer says. “There’s just major things that we don’t know about them. We’re hopeful we can understand them eventually, through observations and heavy-duty computational modeling—because that’s what they didn’t have in the ’60s. And even today, we regularly run up against the capabilities of what the computer can do.”

Top: Image using radio waves to visualize a faint jet of plasma (extending to the upper right), powered by a super-massive black hole (the bright white circle). Bottom right: Galaxy 3C 186, where Meyer and colleagues found a black hole that had been “kicked” out of the center of the galaxy. The black hole (blue lines/bright white area) is offset from its galaxy’s center (green lines). Bottom left: The red dot at the center represents a black hole. The rainbow blobs in either corner represent regions where intense radiation is being emitted. The entire image is about 1 million light-years across, and the galaxy is about 6 billion light-years from Earth.
Top: Image using radio waves to visualize a faint jet of plasma (extending to the upper right), powered by a super-massive black hole (the bright white circle). Bottom right: Galaxy 3C 186, where Meyer and colleagues found a black hole that had been “kicked” out of the center of the galaxy. The black hole (blue lines/bright white area) is offset from its galaxy’s center (green lines). Bottom left: The red dot at the center represents a black hole. The rainbow blobs in either corner represent regions where intense radiation is being emitted. The entire image is about 1 million light-years across, and the galaxy is about 6 billion light-years from Earth. Images courtesy of Meyer.

Meyer also studies black hole mergers—the combining of two black holes into one. It’s another research area fraught with uncertainty and with much left to discover. Recently, she co-led a project that found the most convincing evidence yet of a merged black hole that has been “kicked” out of the center of its galaxy, in this case, at 4.5 million miles per hour.

“The history of studying black holes,” Meyer says, “is just one surprise or ‘what the heck’ after another.”

Striking out on her own

a text break designed to show a telescope image of stars

As exciting and rewarding as studying black holes is, when asked about major milestones in her career trajectory, rather than naming the funding of a huge proposal or a publication that moved the needle in her field, Meyer turns to more intangible matters. After completing a Ph.D., which Meyer did at Rice in 2012, a researcher should transition to becoming truly independent in setting goals and priorities, bringing in funding, managing a research group, and going beyond “the projects your advisor wanted to do,” she says.

After a postdoctoral fellowship at the Space Telescope Science Institute (STCsI) at Johns Hopkins University under an inspiring mentor, Bill Sparks, Meyer joined the UMBC faculty in 2015. It would be the first time she had a “lab of her own.” Sparks was confident she was on a path to great things at the time. “It was a real pleasure to work with Eileen at STScI; we considered ourselves very fortunate to bring her there,” he says, adding that her work there “was extremely favorably received. An eminent astronomer described it as ‘truly beautiful work.’”

Yet, like new faculty members everywhere, at UMBC Meyer says she went through a period of proving herself— working hard to bring in major grants, come up with fresh research ideas, and publishing high-impact papers as a lead investigator. The first major milestone  “felt like it happened eventually after  I’d been here a couple years,” she says.  “I felt like I could call myself an independent researcher.”

Independent, but not alone 

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Even as she worked toward independence as a researcher, Meyer certainly wasn’t alone. Mentors like Sparks and Meyer’s husband, Markos Georganopoulos, professor of physics at UMBC, and others in the department and at the university have provided support along the way.

“He was a little bit ahead of me in the career stage,” Meyer says of Georganopoulos, “so everything I would go through he had gone through a few years before. You can kind of mentor each other because you have a sounding board.” Their research is similar enough that Georganopoulos is a co-author on some of Meyer’s publications.

Jane Turner, former director of the Center for Space Sciences and Technology, a UMBC partnership with NASA, also mentored Meyer in her early days at UMBC. “I’ve come to appreciate that UMBC is a very supportive place—the department, the college, and the school in general,” Meyer says. “It’s absolutely true that people want you to succeed here. I’ve always felt that.”

Meyer understands the importance of mentorship, as the first person in her family to earn a Ph.D. She enjoys paying that support forward to UMBC students. “I really love our student population. They’re just fantastic,” she says. “There’s a certain seriousness and maturity that they have that I really appreciate.”

Some of her students are the first person in their family to earn a college degree, and many more, like Meyer, are the first in their family to be considering graduate school. “I feel like I identify with our student population, which makes working with them really  a joy.”

Life as a parent-researcher

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In 2019, Meyer and Georganopoulos welcomed their son into the world, and she felt the strength of the UMBC community even more. “Parenting and being a highly active researcher is a real challenge,” Meyer says, especially when you’ve moved far from family in order to pursue your dream of being on the faculty at a research university. While “the department and UMBC in general has been very helpful,” parenting still hasn’t been easy given “systemic bigger issues that we have with supporting parents,” she says.

Always a determined problem solver, however, Meyer has found ways to succeed both as a parent and as a scientist. Mentors advised her to consider all of her unfinished projects (of which any researcher usually has many), and instead of trying in vain to complete them all, “focus on where you can make major progress in the field. Focus on impact, and let the others go,” she says. She has taken that advice to heart—especially through the pandemic.

A family (father, mother, and son) poses together seated on the ground
Meyer with husband, Markos Georganopoulos, and their son, Stefanos. (Photo courtesy of Meyer)

And now that she’s more established in her field and as a researcher, it’s time to step back from the “take every opportunity” mentality and learn to say no, which can be a special challenge for women and young scientists, Meyer says. “Bill [Sparks] was always very good at that,” though, she adds—and that’s not the only thing she’s taken from his mentorship.

“He is my model for what a scientist should be,” Meyer says. Especially with current pressures to publish and win grants at a rapid clip, Sparks “always did only what he was interested in,” even shifting focus from astrophysics to astrobiology later in his career. “I want to be as free as he is with how he does his work,” Meyer says.

Living the freedom

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Today, Meyer is living that freedom by exploring new kinds of research using the UMBC observatory, and Sparks has joined UMBC as an adjunct faculty member to support the effort. In addition to fixing up broken motors and buying a much larger ladder, Meyer plans to build a new instrument called a polarimeter, which will make observations of objects in our solar system, phenomena farther away such as flare stars, and other targets possible with the UMBC telescope. 

“It’s great to be working with Eileen again—she’s so darn good at everything and always open to taking on something new and unfamiliar, whether it’s building polarimeters, climbing wobbly ladders, or thinking about black holes and the origin of the universe,” Sparks says. “Eileen is one of the most capable and versatile researchers in astronomy—and our project should keep UMBC at the forefront of a unique, innovative scientific niche.”

Making new missions happen

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She is also on the leadership team of a University of Maryland-led consortium competing for NASA funding for a new space-based satellite mission. NASA put out a call for proposals for high–energy astrophysics missions, and her team’s entry, the Advanced X-ray Imaging Satellite (AXIS), would capture extremely high resolution X-ray images to study galaxy formation, black holes, and much more.

A professor sits at a desk with a student going over data
Meyer working with a student. (Marlayna Demond ’11/UMBC)

This role is an exciting change for Meyer. She describes herself as coming from “a classical academic path,” where she relied on data from both land- and space-based instruments but was never involved in their design, construction, or the bureaucracy often involved in actually putting a satellite in the sky. After attending a summer workshop at Harvard, however, her perspective shifted. A scientist on the original Chandra X-ray Observatory mission team gave a talk describing the iconic mission’s 30-year journey from concept to launch, which finally happened in 1999.

“I was astounded by how difficult it was—the immense challenge—but then also how amazing it is that eventually this thing flew, and it’s still working—it’s still taking amazing images all the time,” Meyer says. “Ever since then, I always thought I would love to get involved in that process, to help be an advocate for new observatories, new technologies. So when I was asked to join AXIS I was very happy, because it’s been a long-term side dream of mine to be involved in making new missions happen.”

The things that are mine

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As her career—and her family—moves forward, Meyer is hitting her stride. “I love studying black holes and jets, but it’s still true that that was my advisor’s topic,” she says. But with AXIS, the observatory work, and other new collaborations, “I feel like I’m getting into the things that were really mine—the things that were interesting to me all along,” she says.

The UMBC physics department plans to hire at least one more faculty member in high-energy physics soon. That could also shape Meyer’s work, depending on her new colleague’s areas of interest. She’s also been approached by researchers in the Center for Space Sciences and Technology for collaboration. Put simply, the future is bright for Eileen Meyer, and she’s savoring it all.

“I think of myself as an open person; I could see myself doing work that I haven’t imagined yet,” she says. “I like it when people bring me problems to think about. We’ll see where we go next.”

UMBC’s Zhibo Zhang to clarify atmospheric dust’s role in climate with NSF grant

Natural dust particles and human-produced pollutants in the atmosphere affect Earth’s overall energy budget in different and nuanced ways. A new three-year, $620,000 NSF grant led by Zhibo Zhang, professor of physics, will study how dust, pollutants, and water vapor in the atmosphere interact, to increase understanding of their overall effects on the global climate.  

Atmospheric dust particles are large enough that they can reflect the Sun’s energy back to space, producing a cooling effect—but they can also trap energy from the earth trying to escape, contributing to warming. Most pollutants are too small to contribute to cooling, and tend to warm the planet instead, Zhang explains. But when the two mix in the atmosphere, which is commonplace, things get complicated. The new project will work to disentangle the effects of different kinds of particles through a combination of techniques.

Zhang is particularly excited about the upcoming work, because research led by his former students made it possible. Qianqian Song, Ph.D. ’21, atmospheric physics, “wrote three papers over the last three years that gave us the credentials to apply for this program,” Zhang says. Olivia Norman ’20, physics, also contributed substantially. Song is currently pursuing a postdoc at Princeton, and Norman is in graduate school at M.I.T.

Moving forward, Tony La Luna, a new Ph.D. student in Zhang’s lab, will focus on the project, and Zhang is looking forward to adding more students to his team.

Domino effect in the atmosphere

Wind is always lifting dust from Earth’s surface, especially in arid areas such as the Sahara and Gobi Deserts. Once airborne, the dust can travel long distances and interact with other particles in the atmosphere. 

“When dust moves from its source region to a polluted area, it gets mixed with the pollution there. And we are interested in these interactions,” Zhang says. His team’s research has shown these interactions are most common in eastern China, India, and central Africa.

An aerial view of the Korean peninsula and northeastern China, with white clouds and tan dust swirling through the sky.
A satellite image centered on the Korean peninsula shows dust and clouds in the atmosphere. (Jacques Descloitres/NASA GSFC)

Until very recently, researchers typically modeled dust and pollutants separately, assuming they did not interact. But based on Zhang’s group’s research, that approach doesn’t produce a good approximation of what’s actually happening, he says.

Where dust and pollutants mix, tiny pollutant particles can condense onto larger dust particles. “The pollution particles can bump into the dust and stick together,” Zhang says. Then a domino effect ensues: “Once the pollution is coated on the dust,” he says, “it changes the way the dust interacts with water.”

Dust generally repels water, but pollutants are often attracted to water molecules. So dust coated with pollutants, called “coated dust,” can start to collect water. By changing how the dust reflects light, “This coating can change the net effect from cooling to warming,” Zhang says. By providing a surface to which water molecules can attach, the coated dust can also contribute to cloud formation, which affects precipitation.

Beyond satellite images

It can actually be difficult to tell whether a satellite image shows dust, pollution, or coated dust—so developing techniques to distinguish between different kinds of atmospheric particles is another one of the team’s goals.  

“First, we need a good dust model,” Zhang says. His collaborator Dr. Diana Ortiz-Montalvo at the National Institute of Standards and Technology (NIST) uses a special imaging technique to precisely measure the shape of dust particles in the lab. Those measurements will help create models of different kinds of dust. 

In general, pure dust has jagged edges. However, if the dust is thickly coated, it appears spherical again; this is called “smoothed dust.” A smoothing effect can also happen if water binds to dust and then evaporates. 

Knowing exactly what each type of dust looks like will support efforts to more accurately identify them in satellite images, and understand how each type will behave in the sky. 

Four types of atmospheric dust particles. "Pure dust" has jagged edges; "coated dust" is surrounded by a layer of other particles; "smoothed dust" has had its jagged edges smoothed; and "dust-aerosol clusters" look like pure dust with a few particles attached. Pure dust is shown as a beige, sharp-edged blob, the others are variations on that theme.
Different combinations of dust and pollutants take different shapes, which can be identified in the atmosphere through a combination of satellite data. (Image courtesy Zhibo Zhang)

Scattering light—and focusing on results

With the dust models in hand, Zhang’s team will calculate how the dust would interact with different particles it might encounter in the sky, like water, smoke, or industrial pollutants. Specifically, they will estimate how the dust would reflect—or “scatter”—light that strikes it. The scattering pattern depends on how rough or smooth the dust is.

The researchers will also analyze observational data that measure how dust all over the globe is scattering light. “Then we’ll combine lab measurements, the scattering calculations, and these satellite observations all together,” Zhang says, to answer the project’s ultimate question: Is dust and its interactions with other particles warming or cooling the planet, and how much?  

Zhang’s research group melds computer science, physics, and climate science to address some of the least understood factors contributing to global climate. The new project will further those efforts, with the potential to clarify what roles dust and other atmospheric particles play. Along the way, it will also prepare students for successful careers in science. 

“The new grant is indeed based on the success of the students. They laid the foundation for this project,” Zhang says. Much like his students, he adds, “I’m excited to take this essential next step in addressing an issue that affects our planet so profoundly.” 

UMBC partners in NASA-funded TIGERISS mission to determine source of heavy elements on Earth

Nuclear fusion reactions inside certain stars can produce many of the most common elements on Earth, like carbon, nitrogen, and oxygen. But heavier elements that are also found on Earth are harder to generate, requiring reactions with even more energy than exists within a run-of-the-mill star like our own.

“So all of that heavier stuff we see here on Earth and throughout the cosmos, like gold, and platinum, and lead—where did it come from, and how did it get distributed?” asks Nicholas Cannady, a postdoctoral researcher at UMBC’s Center for Space Sciences and Technology, a partnership with NASA.

Cannady serves as operations lead on a new mission that aims to help answer this question. NASA recently selected that mission, the Trans-Iron Galactic Element Recorder for the International Space Station (TIGERISS), for up to $20 million in funding over five years. Seven million will go directly to the NASA Goddard Space Flight Center in Greenbelt, Maryland, where Cannady is based. The rest will go to the lead institution, Washington University in St. Louis, which will further disburse the funds to the collaborating institutions: UMBC, Pennsylvania State University, Howard University, and Northern Kentucky University. UMBC will receive $2 million. If all goes well, TIGERISS will launch to the International Space Station (ISS) in 2026.

From model to measurement 

headshot of a smiling man wearing glasses and a collared dress shirt
Nicholas Cannady (image courtesy of Cannady)

TIGERISS will count how often certain elements, arriving at Earth as cosmic rays, collide with its detectors. Cosmic rays are extremely high-energy particles that travel at nearly the speed of light. Heavier elements are rarer than lighter elements, which means they will be seen less frequently by the instrument. How often the detector sees a particular element can be used as a proxy for how abundant it is in our Milky Way Galaxy. 

Models exist predicting how common different elements are and how they might have been created, but they don’t all agree. In some cases, elements can only be made through a process that requires powerful explosions where the cores of atoms and neutrons repeatedly collide, Cannady explains. Scientists expect different kinds of events in the universe with the necessary power (such as exploding stars) to produce different amounts of these elements.

TIGERISS scientists will use measurements from the instrument showing how often different elements are detected “to support or go against those models,” Cannady explains. “It could help us see which models for production of heavy elements best represent what we see.”

Above the atmosphere

“TIGERISS is sort of the next step in a line of instruments that have been until now borne on balloons—high altitude, scientific balloons,” Cannady says. Unlike its predecessor, the balloon mission SuperTIGER, TIGERISS “will be on the ISS in space, which has some distinct advantages, and will let us really open up some interesting science that the other instruments weren’t able to do.”

The main benefit: On the ISS, there is no interference from Earth’s atmosphere. Although the SuperTIGER balloon flew as high as 130,000 feet, even the tiny amount of atmosphere at that height can affect precision when you are trying to detect extremely rare elements. “The atmosphere really throws a wrench into trying to wring out all the precision you can in things like SuperTIGER,” Cannady says.

TIGERISS will also be on the ISS for at least a year, whereas SuperTIGER made two flights, one for 32 days and one for 55 days. The 55-day flight set a record for a balloon, but TIGERISS’s longer exposure time will increase the chances of very rare elements happening to hit its detectors.

The cosmic ray mystery

TIGERISS may also help illuminate how cosmic rays form and transport elements around the cosmos. SuperTIGER results support one theory for how certain types of particles (including heavy ones) get “swept up and accelerated to the high energies that we see for cosmic rays,” Cannady says. “It gives us a picture of how this heavy stuff gets distributed through the galaxy.”

“So we have this neat picture of how this works,” he adds, “but then above a certain threshold, this picture seems to be breaking apart.”

Cannady and the rest of the team hope that TIGERISS will improve on SuperTIGER’s findings, and start to put the picture back together—or suggest a new one. Whatever it finds, TIGERISS will increase our understanding of where heavy elements formed and how they made their way to Earth.

Snowcapped peaks in the background. A metal box about the size of a shipping container rests on a platform, suspended from above by large cables, surrounded by orange cones on the ground.
TIGERISS’s predecessor, SuperTIGER (inside the large metal box), prepares for a flight at McMurdo Station, Antarctica, in 2017. (Image courtesy of NASA/Jason Link)

Early career leadership

NASA selected TIGERISS through its Astrophysics Pioneers program, which launched in 2020. Its goal is to reduce costs by using smaller instruments that can still contribute to robust scientific advances. The program is also set up to encourage early career researchers, like Cannady, to take the reins.

“One of the big focuses of Pioneers is to incorporate early career leadership and roles into the full pipeline of mission development—conception, development, and implementation, and then the operations and analysis as well,” Cannady says. His roles as institutional lead and mission operations lead create plenty of opportunities to build a network with researchers at other institutions, hone his management skills, and conduct cutting-edge science at the same time.

“It’s really neat to me to get to see things from the beginning and potentially follow them on through to the end. There are several of us who are getting to do that,” he says. UMBC’s Kenichi Sakai, a CSST research scholar, is also on the project, and former CSST researcher John Krizmanic will serve as the overall lead for NASA Goddard.

Sakai is leading development for one of the detector subsystems, and he and Cannady are hoping to engage both undergraduate and graduate UMBC students in that work. For the next year, the team will undergo their concept study phase, figuring out what’s feasible and starting to nail down the details of the design. 

“We’re really going to start hitting the ground running with this,” Cannady says. And then, once the team completes a concept study and makes important implementation decisions in the first year, he says, “we’re going to start building.”

Vision beyond sight: UMBC’s Phyllis Robinson to advance study of critical eye protein with $2.5M NIH grant

Most people rely heavily on image-forming vision to navigate the world, but our eyes do much more than help us “see” in the traditional sense. In addition to rod and cone cells that help us perceive contrast and color there are a small number of other specialized cells in our eyes. These cells, called intrinsically photosensitive retinal ganglion cells, play a role in what’s called non-image-forming vision. This type of vision affects everything from our mood, to our sleeping and eating patterns, to our ability to adapt to time zone and seasonal changes.

Despite the importance of non-image-forming vision, our understanding of it is still in the early stages. An important path forward is examining melanopsin, a key protein regulating how non-image-forming vision works. 

Phyllis Robinson, professor of biological sciences, has been studying melanopsin since its discovery. For the next four years, she’ll expand on her prior work with a new $2.5 million grant from the National Eye Institute (NEI), which is part of the National Institutes of Health. Colleagues on the grant include researchers at the NIH, Johns Hopkins University, Washington State University, and the Oregon Health Science University. The grant is a renewal of a previous five-year R01 award, traditionally the most sought-after and largest grant type from the NIH.

The new work will focus on how certain modifications to melanopsin affect its function. Robinson and colleagues will also examine the role of dopamine—a neurotransmitter involved in a huge range of mental and physical processes—in regulating this critical protein and its effects.

“We’re looking at this cool molecule that affects our light-dependent behaviors in ways we’re not conscious of,” Robinson says. “It’s really exciting stuff within our field.”

A cascade of changes

portrait of a woman with short gray hair
Phyllis Robinson (Melissa Cormier/UMBC)

Robinson’s previous work has contributed significantly to a better understanding of melanopsin’s functions and mechanism of action. For example, shortly after melanopsin’s discovery, Robinson and her team demonstrated that it is involved in how our pupils respond to light. 

In a typical eye, light exposure causes the pupil to contract, and then, when the light dims, the pupil dilates again in about a minute. This system protects the eye from damage caused by overexposure to light. This process is familiar to anyone who has had their eyes dilated by an eye doctor and then stepped out into a sunny day.

In contrast to that typical reaction, in mice with chemical modifications to the structure of melanopsin, the pupils stay dilated for about 45 minutes after light exposure, indicating that functional melanopsin is involved in the pupil’s response to light. Ongoing and future studies under the new grant will look at how a different set of modifications to melanopsin affect mice’s ability to adapt to changes in their light exposure patterns, as if they were changing time zones—a process called “photoentrainment.”

Robinson’s group also recently showed that dopamine can regulate the function of melanopsin in a cell culture. The new funding will allow the team to further explore dopamine’s role in non-image-forming vision in mice. In addition to showing whether or not dopamine regulates melanopsin, they will work to figure out what sequence of chemical reactions drives the protein’s effects, and what other molecules are involved, called a “chemical cascade.”

Mystery molecule

Melanopsin and the cells that contain it are also interesting from an evolutionary perspective, Robinson explains. “These ganglion cells may be the ancient photoreceptors,” she says. 

“If you think about the evolution of vision, an organism just detecting whether it’s light or dark would be the first step,” she notes. “All you need is a light-sensitive cell.” In fact, even nocturnal animals and animals that live in dark environments, like caves or tunnels, have the cells responsible for non-image-forming vision, Robinson says.

In humans, a better understanding of melanopsin and its regulation could offer insight into health conditions that afflict shift workers, since their schedules do not align with their bodies’ natural hormonal responses to light. It could even reveal new potential targets for treating conditions like seasonal affective disorder or jet lag. And it might add evidence to arguments for dimming lights in the evening and prioritizing exposure to sunlight in the morning. 

A solid red blob (indicating concentrated eye protein) in the upper right, with red lines streaming from it down toward the bottom left. The lines are punctuated by red dots. Black background.
A microscope slide of the mouse retina, with the cells containing melanopsin stained red. (Image courtesy of Phyllis Robinson)

“Our research is going from molecules to behavior,” Robinson says. Her lab at UMBC focuses on physiology by doing studies with cells. Then, based on the findings, her NEI colleagues and graduate students, who are jointly advised by Robinson and NEI faculty, carry out behavioral studies with mice as a next step. Eventually, it could lead to work directly supporting human health.

“It’s always exciting to renew an R01 award and this new funding will make important new research possible,” Robinson says. “Melanopsin is a relatively unknown molecule that has huge impacts on our physiology and health,” she adds. “It’s like the mystery molecule in your eye.” 

Over the next four years, Robinson and colleagues hope to make this molecule a little less mysterious.

Ozone and thunderstorms: Two UMBC Ph.D. students receive prestigious NASA grants, mentor undergraduates

Two UMBC Ph.D. students in atmospheric physics, Maurice Roots and Kylie Hoffman, have received competitive Future Investigators in NASA Earth and Space Science and Technology (FINESST) awards that will support the remainder of their graduate studies. Roots’s research project will focus on air pollution and Hoffman will target thunderstorms, both using remote sensing techniques. Each will receive up to $150,000 over a maximum of three years for tuition, research, professional development, and other expenses.

Tracking ozone’s journey

Roots will further his study of ozone found near the Earth’s surface. Unlike ozone in the upper atmosphere, which is critical for protecting organisms on Earth from powerful solar radiation, ozone near the surface is a form of air pollution. It can lead to respiratory issues in animals (including humans) and reduce crop yields by damaging plants’ leaves. 

Combustion engines are the main producers of surface-level ozone, because they release molecules that can convert to ozone when they interact with sunlight. Roots is particularly interested in ozone prevalence in the Chesapeake Bay region and other urban areas on bays, such as New York City and San Francisco, because “water is like a mirror,” he says, and with more light bouncing around, there are many more opportunities to generate harmful ozone.

Headshot of man in lab coat
Maurice Roots (image courtesy of Roots)

Roots will use a network of ground-based remote sensing instruments to improve understanding of how ozone forms and moves around, with a focus on the Eastern United States.

It’s an exciting time to be in remote sensing and ozone studies, Roots says, in part because “we’re still finding out things about simply when and where high ozone is happening.” At the same time, the instrument network “is becoming a teenager. It’s grown up a lot, and a lot of changes are about to start happening.” One of Roots’s main goals with the new project is to generate a “synergy of NASA’s ground-based instruments,” where all of the data they produce can be easily gathered and interpreted together to form conclusions.

Understanding not just where ozone forms, but where it travels from there, is important, Roots says. For example, phenomena called “nocturnal low-level jets” can move air (and ozone and other pollutants with it) from Georgia to New York in one night, he explains, which “changes the whole regulatory perspective.” Right now, states or cities can be fined for having too many instances of high ozone—but if the ozone may have come from several states away, the picture gets more complicated.

While Roots isn’t directly involved in policy, his work to improve “process-level understanding” of where ozone is created, how it moves, and where it ends up could influence regulation in the future.

Predicting thunderstorms, protecting farmers

Hoffman’s work will explore how severe thunderstorms form in the southern United States, especially at night. The genesis of these storms is currently poorly understood, despite their important implications for community safety and agriculture.

Belay Demoz, professor of physics and director of the Goddard Earth Science Technology and Research (GESTAR) II Center, and also Hoffman’s and Root’s Ph.D. advisor, co-led the Plains Elevated Convection at Night (PECAN) mission in 2015. It used ground- and aircraft-based instruments to collect a huge amount of data about storms in the U.S. southern plains, much of which has the potential for more in-depth analysis, Hoffman says. She will develop a few in-depth case studies using PECAN data, seeking clues about which variables are most important for forming these storms, such as temperature, wind speed, and water vapor concentrations. After that, she’ll expand to determining the frequency of severe storms and what features differentiate them from milder events.

Headshot of smiling woman in rose-colored shirt
Kylie Hoffman (image courtesy of Hoffman)

“A lot of people research these storms with weather models and simulations, but there hasn’t been a ton of research done with remote sensing observations yet,” Hoffman says. “I plan to use the PECAN datasets to calculate atmospheric quantities that are typically only evaluated in model-based research, and determine what potential uses this approach has for improving our understanding of these storms.” Her eventual goal is to develop better forecasting for thunderstorms, especially to benefit the many farmers in the southern plains. 

Hoffman’s research is interdisciplinary and brings together the work of NASA and the National Oceanic and Atmospheric Administration (NOAA), which previously awarded her a research fellowship. Better weather forecasting is “also one of NOAA’s main missions,” she explains, “to help us become a weather-ready nation, and improve our ability to inform people and small businesses” about the risks severe weather can pose to lives and livelihoods.

Making it official

Hoffman’s research as an undergraduate meteorology major also used remote sensing data, which she enjoyed. As a result, “I was looking specifically for a meteorology or atmospheric physics graduate program that worked with remote sensing data,” she says, “and that’s one of the strengths of the UMBC program.”

In preparing her FINESST application, “I felt very supported by Belay [Demoz] and the whole office. It was exciting. It felt really official,” she says. “Writing the application helped me clarify where I want to go with my research. And even if I hadn’t gotten the grant, it was helpful just to know the process.”

Demoz is thrilled to have two students receive the FINESST award—a rare event for any Ph.D. advisor. “I know firsthand how competitive this was, and I am very proud of their accomplishment,” Demoz says. 

He’s also proud of the work they do outside the lab, supporting other students and choosing projects that could have real public impact. “This is what I would like all our grad students to do, since it prepares them well for entering the professoriate,” he shares. “I’m honored to say they are my graduate students.” 

Paying it forward

Roots and Hoffman have already begun to pay forward the support they received from mentors at UMBC. This past summer, they and three more graduate students, including Emily Faber, M.S. ’21, atmospheric physics, a current Ph.D. student in the same field, served as mentors in the eight-week Student Airborne Science Activation (SaSa) program. The NASA-funded program offers high-achieving first- and second-year undergraduates at minority-serving institutions (MSIs) the opportunity to gain experience with airborne field research campaigns through a paid internship.

This year, SaSa welcomed 24 students, including four from UMBC, to UMBC’s main campus for four weeks. Participants spent the other four weeks at the NASA Wallops Flight Facility in Wallops Island, Virginia. The graduate students served as the participants’ primary mentors, Hoffman explains, from helping them develop research questions to guiding them through final presentations. 

large group on a runway in front of a NASA aircraft; overcast skies
Participants in the 2022 SaSa program at NASA Wallops Flight Facility. (image courtesy of Belay Demoz)

Two of the UMBC participants decided to continue conducting research with Demoz’s group during the academic year. Trisha Joy Francisco ’25, mechanical engineering, is working with Hoffman on pollution measurements. Eric Ekey ’25, computer engineering, will start work soon with Roots.

Hoffman recalls a transformative summer internship that gave her the confidence to apply to graduate school. “That’s part of what I wanted to do for the students—replicate what my mentor did to help me during that experience,” she says. 

SaSa was mutually beneficial for the students and their mentors; it helped Roots boost his confidence, too. After answering student questions for a month, “by the end,” he says with a smile, “I realized, I guess I actually know a lot.”

With their FINESST awards, Hoffman and Roots will continue to put their knowledge and mentoring skills to work as they conduct research to answer big questions about how atmospheric dynamics impact our daily lives.

UMBC researchers build next-gen satellite tech to examine Earth’s atmosphere

The first Hyper-Angular Rainbow Polarimeter (HARP) was a nano-satellite about as big as a loaf of bread. Developed by Vanderlei Martins, professor of physics, and his team of scientists and engineers at UMBC’s Earth and Space Institute, the HARP cubesat launched to the International Space Station in November 2019 and was released into orbit in February 2020. HARP spent over two years collecting first-of-its-kind data on Earth’s atmosphere, and finally deorbited in April 2022. 

But that was just the beginning. Soon, HARP2 will be part of NASA’s Plankton, Aerosol, Cloud, ocean Ecosystem (PACE) mission. And the HARP team is preparing now to compete for a spot on the future NASA Atmosphere Observing System (AOS) mission as MegaHARP.

From the HARP cubesat, “We have data now on clouds. We have data over the ocean. We have data over land surfaces in a way that we never had before,” Martins says. The instrument was so impressive that the American Institute of Aeronautics and Astronautics named it SmallSat Mission of the Year in August 2021. “Now,” Martins says, “we are using HARP data to develop algorithms and methodologies that we will use for these other missions.”

Proving it works

On its 27-month flight, HARP’s unique sensors collected new kinds of information about clouds and tiny particles in Earth’s atmosphere, such as wildfire smoke, desert dust, and human-generated pollutants. These particles, collectively known as aerosols, have many effects on the global climate and the health of organisms. The data may inform refined climate models or strategies to reduce the effects of air pollution.

HARP also broke ground in the way it collects data. HARP captures images, but “it’s not a camera that takes pictures. It’s something a lot more sophisticated,” Martins explains. “It’s taking thousands of these pictures and recombining them in a way that becomes a multi-dimensional scientific data set.”

A single composite image generated by HARP can contain the information from up to 1,000 original images. Each image and its information are extractable from the composite, which allows researchers to look at many different parameters depending on their goals. 

“The HARP cubesat allowed us to prove that the idea we had of how to create the composite images worked,” Martins says.

an image of part of the Earth's surface, with horizontal stripes and patches of bright colors
The stripes on this image HARP collected of the Mediterranean represent the many wavelengths of light, from near infrared to blue, that HARP’s sensors can detect. The HARP team combined hundreds of images like these to create smooth depictions of areas all around the world. (courtesy of Vanderlei Martins)

Opening the path

HARP’s physical design is also innovative. A single instrument with no moving parts houses the sensors and algorithms used to process all the different data types. That’s a big benefit for any instrument facing the harsh environment of space.

“For us, HARP was a pathfinder,” Martins says. “It was funded as a technology demonstration. So we launched HARP to demonstrate that this technology is possible, and to open the path for other missions that are coming after that.”

HARP2 is already taking advantage of lessons learned from HARP. It will fly on NASA’s PACE mission in 2024, but the team must deliver their instrument to the Goddard Space Flight Center this October.

“HARP2 is basically an advanced copy of the instrument payload in the HARP cubesat,” Martins says. Everything from calibration systems to the raw materials has undergone improvements. 

Plus, due to greater availability of technical resources on the larger PACE mission compared to the original cubesat, Martins explains, “HARP2 in five hours will collect as much data as HARP cubesat collected in two years.”

two researchers in all-white, full-body protective gear hold the HARP cubesat inside a "clean room" laboratory.
Researchers work on the HARP cubesat in a clean room. (Marlayna Demond/UMBC)

Launching satellites and careers

Since its inception, HARP has also lived up to UMBC’s mission to educate students and support the regional economy and workforce. Undergraduate and graduate students played key roles in the research, design, and construction phases for HARP and now HARP2.    

“Relationships with federal agencies like NASA, all the work that we do with private companies around us, plus the training of students, who then go on to lead the same field they were working in, all fit very well the goals of our public research university,” Martins says.

Through HARP, HARP2, and early preparation for MegaHARP, every iteration of the project has prepared students for successful careers, proven new technologies, and generated new knowledge about the world. But, as an educator, perhaps the most rewarding part for Martins is seeing his students grow, find success, and then reach back to help others.   

“We are seeing with HARP a full cycle. Students were involved in the inception of the idea for HARP from the beginning,” he says. “And today, students who were there working on HARP at the beginning are now in positions at NASA supporting the next generation.”

UMBC’s Viswanathan uses the Moon’s craters to track its shifting poles over 4.25 billion years

A new study published in Planetary Science Journal has determined how the Moon’s poles have shifted over more than 4 billion years, a phenomenon known as “true polar wander.” To trace the poles over time, the research team examined the combined effects of more than 5,000 craters on the Moon’s surface.

Each impact, and the subsequent crater, changed the distribution of mass on the Moon slightly. To rebalance, the Moon would have rotated just a little, without its axis moving in space. As a result, the axis would pass through the Moon at slightly different locations—the new poles.

“All this cratering is like a record” of the Moon’s history, says Vishnu Viswanathan, assistant research scientist with UMBC’s Center for Space Sciences and Technology (CSST), a university partnership with NASA’s Goddard Space Flight Center. Viswanathan co-led the study with David Smith, a research scientist at the Massachusetts Institute of Technology.

Water on the Moon?

Professional photo of South Asian person with short, black hair, wearing gold
Vishnu Viswanathan (Image courtesy of Viswanathan)

The study found that over approximately 4.25 billion years, the Moon’s poles wandered 10 degrees in latitude, or 186 miles, from the influence of cratering. Over the past 3.8 billion years, the poles have not wandered more than 2 degrees, or 37 miles. Such a moderate amount of polar wander would have created relatively stable conditions in the Moon’s polar regions over an extended period. That stability likely contributed to favorable conditions for resources such as frozen water.

Scientists have detected ice in colder, shadowed regions near the Moon’s poles. However, its amount and age is unknown. If the poles had moved substantially and frequently over time, any ice would repeatedly be exposed to sunlight and likely lost to sublimation—the process of a solid converting directly to a gas, like dry ice on Earth. With greater stability of the poles over billions of years, there would be more time for water to accumulate near the Moon’s present-day poles.

Stepping back in time

To calculate each crater’s effect on the location of the Moon’s poles, the research team relied heavily on a map of the Moon’s gravitational field, which defines the force of gravity at each point on the Moon’s surface. Sander Goossens, a former UMBC CSST scientist and a co-author on the new paper, developed the map previously using data from NASA’s GRAIL mission, which flew over the surface of the Moon in 2012.

The two GRAIL satellites measured anomalies in the distribution of mass on the Moon (such as craters), to a resolution of a few kilometers. The satellites’ detection is comparable to the way that a driver can feel the rise and fall as they pass over speed humps or potholes, Viswanathan explains.

Using Goossens’s map, Viswanathan and his team figured out a way to mathematically remove each crater’s individual effect, or signature, on the Moon’s gravitational field. The team started by sequentially removing 185 large craters whose ages are known, partly based on samples collected from NASA’s Apollo Moon missions. At each step going backward in time, they recalculated the presumed location of the Moon’s poles, creating a history of the poles’ location as they moved through time—the polar wander.  

For the rest of the craters, most of them small, the research team removed their signatures from the gravity field and randomly distributed them through time. The team’s model is designed so more impacts occur in the early history of the Moon, because it’s understood that impacts were more frequent during that period. By running this simulation again and again, they were able to estimate the path of the Moon’s poles based on its cratering history.

This animation traces the “polar wander” of the Moon’s poles from about 4.25 billion years ago to the present day. (NASA Scientific Visualization Studio)

The Moon’s origin story

Moving forward, the new research may increase understanding of the formation of the Moon and the solar system in general. Information from the study about the shape of the Moon at different time points could help refine understanding of the Moon’s orbital path at those times. Also, shortly after the Moon formed, it was much closer to Earth and spinning faster. The contribution of small craters to the Moon’s shape could help add more detail to our understanding of how it reached its current location.    

Viswanathan is excited about NASA’s Artemis mission, which will likely collect more samples from previously unvisited craters near the Moon’s south pole. “More samples from more craters would tell us quite a lot about the Moon’s cratering history,” he says. Knowing accurate ages of the large craters, including the largest, the South Pole-Aitken basin, would help refine the polar wander model. Information about the craters’ composition could increase understanding of resources—such as water—present on the Moon.

The project has also been an opportunity for Viswanathan and his team to grow and gain new expertise. An astronomer and a planetary geodesist who has researched other aspects of the Moon, Viswanathan came to the project with the beginnings of the math needed to track the poles based on the gravitational field. “But I had very little idea of these craters’ names before,” he says. “So it was a nice way to familiarize with them.” 

The project, and especially the close collaboration with colleagues, has also served as an anchor for him throughout the pandemic. He shares, “I was so invested in the project for the last nearly three years. This kept me sane.”

UMBC to co-lead new Baltimore Social-Environmental Collaborative with $2.3M grant

American cities face environmental challenges that are exacerbated by climate change, from air and water quality issues to flooding and heat. Low-income neighborhoods and areas that were previously subject to racial redlining often experience these effects more intensely. 

A new program supported by the U.S. Department of Energy (DoE) has funded Urban Integrated Field Laboratories in three American cities (including Baltimore) to generate resilience-enhancing solutions to urban climate challenges in collaboration with community organizations. The Baltimore-centered consortium, named the Baltimore Social-Environmental Collaborative (BSEC), will receive $24.5 million through the program. UMBC will receive $2.3 million of this larger grant. 

Leading UMBC’s work on the project is Claire Welty, professor of chemical, biochemical, and environmental engineering and director of the Center for Urban Environmental Research and Education (CUERE). Johns Hopkins University leads the overall project, which also includes collaborators at the Pennsylvania State University, Morgan State University, the National Renewable Energy Laboratory, Drexel University, and the University of Virginia.

“This Baltimore Social-Environmental Collaborative is an important program during a critical time for our region, for our state, and for our planet,” says Karl V. Steiner, vice president for research at UMBC. “I am pleased that Baltimore was selected to serve as a representative metropolitan area for the climate challenges faced by many mid-sized industrial cities across the U.S.”

Listening to the community

Welty and UMBC colleagues such as Andrew Miller, professor of geography and environmental systems, bring decades of expertise in environmental monitoring to the project through their individual research and the Baltimore Ecosystem Study (BES). Originally funded as one of only two urban Long-Term Ecological Research (LTER) sites in the U.S., the BES has compiled massive datasets on the Baltimore region’s watershed, ecology, and sociological issues related to the environment for more than 20 years. The new BSEC will bring opportunities to expand this work in fresh directions.

“The exciting thing is leading from the needs of the community. To me, that’s what’s different about this,” Welty says. “What we want to try to do is partner with the communities to come up with solutions to these climate impact problems, and then what we’re bringing to the table are our tools to implement that.”

A researcher standing among greenery and holding a clipboard looking at a sampling station, which looks like an transformer box with the front panel open, with a small solar panel attached to it on a tall pole
Andrew Miller checks on a water sampling station in Catonsville, MD. (Victor Fulda/UMBC)

Welty and Miller bring expertise in understanding patterns of water quality, flood and groundwater modeling, and rainfall patterns and how they are changing. UMBC also brings experience interacting with local agencies, such as the Baltimore City Department of Public Works and Maryland Department of the Environment. Other institutions in the consortium bring complementary expertise, such as overall climate forecasting, an understanding of how climate impacts intersect with issues of public health, and experience building trust with community groups.

“Among us, we think we have tools that can be applied to solve these problems,” Welty says. “We’re not imposing our tools on community groups, though, or telling them what their problems are. They’re telling us, and we’re responding with support and resources.”

Adding nuance

Welty, Miller, and others have spent decades generating models and collecting on-the-ground (and sometimes underground) observations of water quality, flow, and more in the Baltimore region. They will continue that work with the BSEC, and with input from communities, prioritize certain issues or geographic areas.

The BSEC will also fund deployment of new sensors at existing Baltimore Ecosystem Study stream sampling stations in the Gwynns Falls watershed . These stations have a 22-year record of weekly water quality sampling, and the new sensors will add data on other parameters  at 15-minute intervals, 24 hours a day, seven days a week. The data will be accessible in near- real time, on only about a one-hour delay.

The BES data is “the best urban water quality data set in the world. This is not meant to replace that, but to add nuance,” Welty says. For example, Baltimore streams have struggled with inundation from road salt in the winter. “You might miss the peak of a salt event with weekly sampling,” Welty says, but finer scale sampling would easily identify it in the data.

two researchers in tall wellington boots stand along the gravelly bank of a stream, which is passing under a bridge.
Claire Welty (left) and Andrew Miller check out one of their study sites in Woodlawn, MD. (Victor Fulda/UMBC)

A giant puzzle to put together

The BSEC is a unique project that brings together wide-ranging expertise to address pressing urban needs. “The guiding objective of the BSEC process is to produce the urban climate science needed to inform community-guided, equitable pathways for climate action,” says Ben Zaitchik, professor of Earth and planetary sciences at Johns Hopkins and the overall project lead. “In doing so, we address a number of fundamental urban science questions from across natural science and social science disciplines.” 

UMBC’s Steiner adds, “This partnership with John Hopkins University and other research institutions is building upon our strong and long-term record of environmental research and educational initiatives here at UMBC. It will both challenge and enable us to explore equitable climate solutions.”

While the exact priorities and concerns that local communities will bring to the forefront are unknown, the BSEC group plans to bring their tools to bear in a way that best serves the people of Baltimore. Building coalitions with researchers and community members, learning the communities’ needs, and then finding the best ways to address them “is like a giant puzzle to put together,” Welty says. “It’s going to be exciting to see how it all unfolds.”