Overview
Dr. Sarah Cooley is an Assistant Professor of Planetary Health in the Division of Earth and Climate Sciences at the Nicholas School of the Environment at Duke. As PI of the Cryo-hydrO Observation Leaders (COOL) Lab at Duke, her research group investigates how climate change is affecting dynamic cryospheric and hydrologic processes in the Arctic and globally. Her research primarily uses satellite data to better understand fine-scale hydrologic change, but she has also conducted field multiple field campaigns in Alaska, Northern Canada, and Greenland. Her primary research focus areas include Northern surface water dynamics, Arctic coastal environmental change and its impact on communities, and global variability in surface water storage. She is also especially interested in how new technologies and big data approaches can revolutionize our ability to observe surface water from space, and she has worked extensively with both new NASA satellites (e.g. ICESat-2, SWOT) and startup commercial earth observation companies (e.g. Planet, ICEYE).
Sarah received her PhD in Earth, Environmental, and Planetary Sciences at Brown University in 2020. She has an MPhil in Polar Studies from the University of Cambridge where she was a Gates Cambridge Scholar and a BS in Geophysics from the University of North Carolina at Chapel Hill where she was a Morehead-Cain Scholar. Prior to starting at Duke, she was part of the inaugural cohort of Stanford Science Fellows at Stanford from 2020-2021 and was an Assistant Professor of Geography at the University of Oregon from 2021-2024. Sarah is especially passionate about all things Arctic, new satellite technologies, and making academia a more accessible, inclusive and healthy place for all.
Current Appointments & Affiliations
Recent Publications
Observing Fine-Scale Lake Ice-Out Dynamics in the Lower Kuskokwim River Basin, Alaska
Journal Article Hydrological Processes · November 1, 2025 The formation and thaw of lake ice plays a critical role in the hydrology, ecology, and subsistence activities of northern regions. However, little research has examined ice phenology in small water bodies and complex deltaic environments, though these are ... Full text CiteGreenland ice sheet runoff reduced by meltwater refreezing in bare ice.
Journal Article Nature communications · September 2025 The contribution of Greenland Ice Sheet meltwater runoff to global sea-level rise is accelerating due to increased melting of its bare-ice ablation zone. There is growing evidence, however, that climate models overestimate runoff from this critical area of ... Full text CiteMeltwater ponding has an underestimated radiative effect on the surface of the Greenland Ice Sheet.
Journal Article Nature communications · September 2025 Ponding of meltwater on the surface of the Greenland Ice Sheet has the potential to reduce ice sheet albedo and amplify mass loss. However, this process remains poorly constrained and is absent from models that project ice sheet mass balance. Here we demon ... Full text CiteRecent Grants
Resolving Key Outstanding Questions in Arctic Surface Water Dynamics using SWOT
ResearchPrincipal Investigator · Awarded by National Aeronautics and Space Administration · 2025 - 2028Constraining surface water radiative feedbacks on the Greenland Ice Sheet using very high resolution imagery
ResearchPrincipal Investigator · Awarded by National Aeronautics and Space Administration · 2026 - 2027Postdoctoral Fellowship: OPP-PRF: Tracking Long-Term Changes in Lake Area across the Arctic
FellowshipPrincipal Investigator · Awarded by National Science Foundation · 2025 - 2026View All Grants