In a recent perspective paper, Assistant Professor Mara Freilich, former posdoc Lilly Dove, and graduate student Katarina Merk present observational and model-based evidence for ocean eddy processes that lead to small-scale heterogeneity in the upper mesopelagic ocean.

From freshly formed simple craters on the Moon to hydrogen sulfide production in the Salton Sea, DEEPS undergraduate students participated in cutting edge research throughout the 2025 summer break. We are proud to showcase some of these research projects with this photo series.

Assistant Professor Mara Freilich is one of the seventeen researchers on cross-disciplinary teams to win funding in the first year of "Scialog: Neurobiology and Changing Ecosystems", a three-year initiative that aims to spark new science exploring neurobiological response to rapid and extensive human-caused environmental changes. Freilich and her team will be exploring "From Feeding to Flux: Unraveling the Impact of Animal Behavior on Global Ocean Carbon Flow."

DEEPS Shorts is a video series highlighting the diverse research within Brown’s Department of Earth, Environmental and Planetary Sciences. This week we hear from Aikaterina “Katia” Tavri, Postdoctoral Research Associate and Remote Sensing Specialist using satellite imageries to study sea ice variability. Created by PhD Candidate Élise Beaudin, with support from Communications Specialist Mae Jackson.

DEEPS Shorts is a video series highlighting the diverse research within Brown’s Department of Earth, Environmental and Planetary Sciences. This week features Pierre Chabert, Postdoctoral Research Associate and Physical Oceanographer studying extreme flooding events in New England. Created by PhD Candidate Élise Beaudin, with support from Communications Specialist Mae Jackson.

DEEPS Shorts is a video series highlighting the diverse research within Brown’s Department of Earth, Environmental and Planetary Sciences. Our first scientist is Lily Dove, Postdoctoral Fellow and Physical Oceanographer exploring the Southern Ocean: The Lung of the Ocean. Created by PhD Candidate Élise Beaudin, with support from Communications Specialist Mae Jackson.

Improving water systems is a key way we can better adapt to climate change, according to Brown oceanographer Baylor Fox-Kemper.

Conversations about sea-level rise often spotlight warming temperatures. But Earth’s geological engine quietly plays its own role. Professor Colleen Dalton, together with colleagues, connects the dramatic change in sea levels to a slowdown in seafloor spreading that reshaped the depth of the ocean basins.

Maggie Gonzalez, a 2025 Leadership Alliance REU student, has published a paper in Geophysical Research Letters with DEEPS Postdoc Lily Dove and Assistant Professor Mara Freilich. The publication explores the biogeochemical and seasonal properties of Antarctic Winter Water using data collected by profiling floats. Gonzalez developed an algorithm to detect a layer of water in the Southern Ocean from observations, as well as the first description of the seasonal and geographical patterns of the biogeochemistry of this water.

In a new article in Nature Review Earth & Environment, Postdoctoral Fellow Lily Dove explores how, with Surface Water and Ocean Topography (SWOT) satellite data, oceanographers are beginning to understand the global distribution of submesoscale currents and their associated vertical motions. This information will inform global and regional-scale climate models, improving predictions of heat and carbon storage in a changing climate.

Julia Vaz explores the Amazon's flying rivers and their unique relationship with climate change in her essay, written for the EEPS 1400 Climate Modeling class during the Fall 2024 semester.

Alejandra Lopez, a first-year PhD student in the Department of Earth, Environmental, and Planetary Sciences at Brown University, explored the Atlantic Meridional Overturning Circulation (AMOC) in a paper as part of EEPS 1400 Climate Modeling (Qualitative Track) this past fall semester.

A recent study, supported by Alianza Coachella Valley, reveals the alarming environmental and public health risks posed by the Salton Sea’s ongoing environmental crisis, and highlights the urgent need for comprehensive solutions to mitigate the risks faced by nearby communities. “The community based approach is essential to the success of the research. Our research aims to inform action and that action will only be impactful and equitable if impacted communities are front and center in all decision-making,” said Mara Freilich, DEEPS Assistant Professor, corresponding author on the study, and PI of the NASA grant, ‘Earth Observations for Resilient Salton Sea Communities.’

Ice sheet melt has been shown to increase volcanic activity in subglacial volcanoes elsewhere on the globe. DEEPS PhD candidate Allie Coonin and her team ran 4,000 computer simulations to study how ice sheet loss affects Antarctica’s buried volcanoes, and they found that gradual melt could increase the number and size of subglacial eruptions.

Professor Amanda Lynch, who has studied climate change in the Arctic for nearly 30 years, spoke to the New York Times about president-elect Trump's calls to acquire Greenland and the Panama Canal. She notes that the new trade routes created by ice melt could heighten the risk of environmental disasters. “An oil spill or some other toxic accident on that route is inevitable and could already have happened and we just don’t know it,” she said.

Fishermen and scientists report that tarpon, a large warm-water trophy fish, have been migrating north. In June, Thomas Czernik, a DEEPS graduate student was fishing for striped bass at night off Aquidneck Island in Rhode Island. “I feel lucky,” Czernik says. “It’s a memory I’ll have forever. I’m thankful.”

A recent study in Nature Communications, co-authored by Professor Baylor Fox-Kemper, reveals that turbulence from ocean fronts—driven by submesoscale shear—significantly influences the transfer of heat, gases, and nutrients in the upper ocean layer, impacting climate and ocean productivity, especially in winter, which could improve climate model accuracy.

In a recent study published in Nature Communications Earth & Environment, OCE High School Interns working with Professor Emanuele Di Lorenzo found that marine heatwaves in the Gulf of Alaska have intensified since 2013, disrupting ocean currents known as eddies, which support marine life. Using 30 years of satellite data and climate models, the team examined how these heatwaves affect nutrient-rich ocean currents called eddies, which support phytoplankton. The study revealed that marine heatwaves create high-pressure conditions that weaken coastal circulation, reducing the formation of eddies and threatening marine life.

According to new research published in the Proceedings of the National Academy of Sciences, conducted during three research cruises from 2017 to 2019 in the Mediterranean Sea, scientists discovered that tiny ocean organisms are transported to deeper waters by currents called intrusions, significantly impacting the ocean's ecosystem. “We found that because these organisms are so small, they can be swept up by ocean currents that then bring them deeper than where they grow,” said Assistant Professor Mara Freilich. “It’s often a one-way trip for these organisms, but by taking this trip, they play a critical role in connecting different parts of the ocean.”

Following the catastrophic damage caused by Hurricanes Helene and Milton, scientists warn that the Atlantic hurricane season is far from over. Assistant Professor Chris Horvat commented, “The Gulf (of Mexico) remains fairly anomalously warm even at this point in the year, so we shouldn’t relax."

Postdoc Lily Dove explains how seals have become valuable allies with scientists who are studying how the oceans are changing in the remote reaches of the Southern Ocean. Tags on the seals' heads collects data while the seal dives and transmits its location and the scientific data back to researchers via satellite when the seal surfaces for air.

New research shows that, rather than an opening of the passage, the safe shipping season declined along several “choke points” through the Canadian Arctic, especially on the northern route. The finding matches expectations that ice will survive longest in the Canadian Arctic, noted DEEPS Professor Amanda Lynch, who was not involved with the study.

Climate Change AI has announced the grantees for the 2023 Innovation Grants program, including "EMPIRIC_AI: AI-enabled ensemble projections of cyclone risk for health infrastructure in Pacific Island Countries and Territories" lead by Visiting Assistant Professor (Research) Chris Horvat. The EMPIRIC_AI project aims to develop higher resolution climate models and targeted cyclone risk projections to support health resilience for frontline communities.

Research Matters, hosted by the Graduate School, is an annual live event featuring short talks by Brown graduate students on why their research matters. DEEPS graduate student Peter Van Katwyk presented on his research, "Improving Sea Level Projections with AI."

Ayushman Choudhury ’25 is a rising senior studying Applied Mathematics-Computer Science and Music and a research assistant in the Mara Freilich Lab, where he investigates ocean flux dynamics in the Southern Ocean. In our third Student Research Story, Ayushman emphasizes his passion for using computer science and mathematical modeling to improve our understanding of climate change and help fight the climate crisis.

Postdoctoral Fellow Lillian Dove recently spoke to National Geographic about the cooling power of the perilous Drake Passage, infamous for its deadly ocean currents and massive rogue waves. Dove's findings suggest that the region's less stratified ocean could make it a highly efficient hotspot for carbon storage compared to other areas on Earth.

DEEPS PhD students Brianna Hoegler and Jared Nirenberg, with the support of hundreds of fellow scientists, have written a letter to the National Science Foundation expressing their concerns regarding the future of scientific ocean drilling research. The letter is published in AGU Perspectives, and garnered signatures from nearly three hundred scientists, a majority being early career scientists.

DEEPS Professor Timothy D. Herbert spoke with Times Evoke about sea sediments, uncovering secrets of ancient Earth and climate change.

“There’s no scenario in which melting ice in the Arctic is good news,” said DEEPS Professor Amanda Lynch, the lead author on a 2022 study in the Proceedings of the National Academy of Sciences. “But the unfortunate reality is that the ice is already retreating, these routes are opening up, and we need to start thinking critically about the legal, environmental, and geopolitical implications.”

The last 12 months were the hottest Earth has ever recorded, according to a new report by Climate Central, a nonprofit science research group. IBES Director and DEEPS Professor Kim Cobb commented that the heat of the last year, intense as it was, is tempered because the oceans have been absorbing the majority of the excess heat related to climate change, but they are reaching their limit. “Oceans are really the thermostat of our planet ... they are tied to our economy, food sources, and coastal infrastructure.”

Assistant Professor James W. Dottin III is featured on a recent episode of PBS's science documentary series, NOVA. In the episode, "Ancient Earth: Birth of the Sky," scientists explore the creation of Earth's atmosphere and our familiar blue sky.

In response to economic isolation due to the Ukraine invasion, Russia is seeking help from China to develop shipping routes through the Arctic. Professor Amanda Lynch shared her perspective with The Wall Street Journal, including concerns about traversing the icy passages with limited emergency support options.

DEEPS Professor Baylor Fox-Kemper and EEOB Professor Stephen Porder have co-authored a piece in TIME about the Earth's rising temperatures. "As earth system scientists, we've learned it's sometimes more helpful to look at Earth as, well, a system. In this case, the system of the air and the oceans. Understanding how they interact is the key to understanding what is, and what isn’t, unusual about this very hot year."

Providence’s sewer systems are not prepared for the amount of rain falling on the city this year, according to Mayor Brett Smiley. And all that extra water is wreaking havoc and endangering lives. Professor Baylor Fox-Kemper commented saying it’s good that the city is taking action on upgrading its sewer infrastructure, given that we can only expect more rainfall and flooding as the climate continues to warm.

The ancient glaciers hint at an Archaean Earth that may have looked similar in some ways to our own time. Assistant Professor Dan Ibarra commented on the researchers' work, saying that the Pongola oxygen-18 values “would be some of the highest elevations [found on Earth today] like Tibet or the peaks of the Rocky Mountains."

“The oceans do a lot of the work in reducing the level of warming,” DEEPS Professor Baylor Fox-Kemper told CNBC. “Over 90 percent of the excess energy on earth due to climate change is found in warmer oceans, some of it in surface oceans and some at depth.”

This summer, an article was published in AGU's Geophysical Research Letters representing work from former Ph.D. graduate Aron Buffen, Professor Meredith Hastings, and other colleagues using a model to better understand how sunlight changes snow nitrate. The work was featured as the cover art for the June issue of AGU's Geophysical Research Letters.

Assistant Professor Mara Freilich and graduate student Élise Beaudin embarked on the Submesoscale-Mesoscale Ocean Dynamics Experiment (S-MODE) mission this past April to study the role of surface layer submesoscale eddies on climate and biological elements in the upper ocean.

$1.5 million worth of repairs for hurricane barriers in Fox Point will start in July, Providence Mayor Brett Smiley announced on the wettest July 10 on record in the last century. Rain, and with it flooding, are only expected to increase in Providence in the future, according to Professor Baylor Fox-Kemper.

The World Meteorological Organization (WMO) recently released its latest findings on the human and economic impact of weather-related disasters during the quadrennial World Meteorological Congress in Geneva. The congress is centered around the implementation of the UN's Early Warnings for All initiative. Professor Amanda Lynch, as the Chair of the WMO Research Board, plays a vital role in guiding the objectives and execution of this significant initiative.

Assistant Professor Gerrit Budde received a Salomon award for his work establishing new procedures for complete sample digestion of meteorite samples utilizing laser-assisted melting and for combined isotope analyses of oxygen and ‘heavy’ elements. Professor Timothy Herbert received a Salomon award for his project developing proof of concept data directly relevant to the long-term stability of the Antarctic ice cap to be submitted to the NSF Marine Geology and Geophysics program.

Baylor Fox-Kemper, alongside Katelyn Moretti, Charles Lawrence, and John Nicklas, has received a 2023 Seed Award for his project, "Bayesian Modeling of Climate-Dependent Mortality Risk among US Residents from 1989 to 2020." This project builds toward a complete, transparent estimation of mortality from the latest generation of climate model projections to 2100.

12 News Meteorologist Steven Matregrano speaks with Professor Baylor Fox-Kemper about what weather could be in store for Rhode Island.