Project Grant 2538744
- The National Science Foundation Division of Polar Programs awarded the University of Washington $666,998 on September 1, 2026, under the Polar Programs assistance listing (CFDA 47.078) to investigate the causes, predictability, and implications of the recent decline in Antarctic sea ice and Southern Ocean warming. The project applies modeling approaches to understand why Antarctic sea ice cover reversed from a steady increase during 1979–2015 to rapid decline since 2015, and why the Southern...
- This Project Grant award from the National Science Foundation Division of Polar Programs (CFDA 47.078) provides $161,000.00 to the University of Washington to conduct collaborative research assessing the causal influence of atmospheric opacity (i.e., clouds) and sea ice on Arctic warming over the period 1980 to 2060. The research will leverage a well-established NSF-funded Earth System Model and observations, including data from the recent MOSAIC field campaign, to quantify how these factors...
- This $369,854 National Science Foundation Division of Polar Programs project grant will support research to further understanding of Arctic sea ice variability in the 20th century. Specifically, the University of Washington will produce a new, physically realistic reconstruction of Arctic sea ice and sea surface temperatures during the 20th century. This reconstruction will be used to study Arctic sea ice during the early 20th century warming period from 1915 to 1940, when the Arctic warmed...
- This $343,332 Project Grant award from the National Science Foundation's Polar Programs (CFDA 47.078) will fund research at the University of Washington to study the impact of increasing boreal forest fires on the Arctic climate and sea ice. The research aims to: Examine how the increased transport of smoke and black carbon from boreal forest fires to the Arctic affects the region's climate and sea ice through warming and cooling effects. This will involve running climate model simulations...
- Federal Project Grant Award Summary The University of Washington received a $462,000 Project Grant from the National Science Foundation (NSF) Division of Polar Programs (CFDA 47.078) effective July 1, 2025, through June 30, 2028. This collaborative research project delivers scientific research products focused on reconstructing historical Arctic sea-ice coverage and associated biogeochemical conditions over the past 150,000 years. The research team will analyze ocean sediment cores using...
- This $304,752 National Science Foundation Division of Polar Programs award will fund research to improve climate model simulations of sea ice physics and feedbacks through analysis of observations from the Multidisciplinary Drifting Observatory for the Study of Arctic Climate field campaign. The University of Washington will integrate spatially and temporally coordinated field observations with single column and global climate modeling to develop parameterizations that more accurately...
- This $307,540 federal Project Grant award from the National Science Foundation's Polar Programs (CFDA 47.078) will fund research to investigate the role of Arctic clouds in modifying surface temperature and energy absorption. The research aims to clarify how different cloud regimes develop and their impacts on Arctic warming and sea ice extent. The project will combine observations from an Alaska field site with high-resolution regional climate models to characterize cloud formation processes...
- The National Science Foundation Division of Polar Programs awarded the University of Washington $630,897 on July 1, 2026, under the Polar Programs assistance listing (CFDA 47.078) to coordinate, manage, and enhance the U.S. Interagency and International Arctic Buoy Programme (USIABP/IABP). The award funds maintenance and replenishment of a network of approximately 200 drifting buoys that form the foundation of the Arctic Observing Network. The buoys generate observational data supporting weather...
- This $870,804 federal Project Grant award from the National Science Foundation's (NSF) Polar Programs (CFDA 47.078) will support a 5-year research project at the University of Washington focused on improving the representation of small-scale sea ice processes in climate models. The key objectives are to refine the modeling of sea ice deformation and fractures at the floe scale, and establish connections between these small-scale dynamics and larger-scale sea ice behavior. This will involve a...
- The National Science Foundation Division of Polar Programs awarded the University of Washington $377,363 on September 1, 2026, under the Polar Programs assistance listing (CFDA 47.078) to develop a new dating method for million-year-old Antarctic ice using cosmic-ray-produced isotopes. The project will measure aluminum-26 and beryllium-10 isotopes accumulated in ice cores retrieved by the NSF Center for Oldest Ice Exploration (COLDEX), which has obtained samples exceeding 6.5 million years in...
The National Science Foundation Division of Polar Programs awarded the University of Washington $480,261 on October 1, 2026, under the Polar Programs assistance listing (CFDA 47.078) to assess the role of absorbed solar radiation, clouds, and boreal fire aerosols in the slowdown of Arctic warming and sea ice loss since 2005. The project will explore how changes in winds, cloud properties, and aerosol concentrations account for recent Arctic temperature and sea ice trends. Arctic amplification—the ratio of Arctic to global warming—was approximately four times greater over 1980–2020, while Arctic sea ice cover experienced a 20 percent loss over that period. However, over 2005–2024, Arctic warming and sea ice loss rates slowed significantly compared to earlier decades, with Arctic amplification near one and sea ice trends near zero. Concurrently, Arctic summer cloud cover and aerosol optical depth increased, and net absorbed solar radiation has been smaller than expected given surface albedo changes. The project will improve understanding of the drivers of recent Arctic trends to inform projections of future change and support decision-making by Arctic stakeholders, addressing national security interests tied to the region's socio-economic value and influence on human activities. Work is performed in Seattle, Washington, with a period of performance from October 1, 2026, through September 30, 2029.
Mod # | Description | ReasonForModification | Federal Obligation | Date |
|---|---|---|---|---|
| Not listed | $480.3k | 8/5/26 |