This $109,690 Project Grant award from the National Science Foundation's Polar Research (CFDA 47.078) program will support a collaborative research project to obtain new ice cores from Antarctica and analyze them to improve understanding of galactic cosmic ray flux and the Holocene methane budget.
The project will use measurements of in-situ cosmogenic carbon-14 in the ice cores to test the assumption of a constant galactic cosmic ray flux over time, which is crucial for studies of past solar activity and glacier extent. It will also analyze carbon-14 in methane to better distinguish contemporary and ancient methane sources, helping to refine estimates of the natural geologic methane source. This work will be performed by researchers at Oregon State University and is expected to be completed by September 30, 2027. No subawards are planned for this project.
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