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The goal of our project is to understand how terrestrial ecosystems influence permafrost temperatures. There are places in the Arctic where climate is warming but permafrost temperatures are stable, while at other places permafrost temperatures are rising rapidly with climate. Soil and vegetation that sit on top of permafrost can either promote heat transfer or act as insulators. Our project will use field measurements at research sites throughout Alaska and Siberia to identify broad trends in relationships between ecosystems and permafrost temperature dynamics. At research sites in Siberia we will make detailed measurements to identify the processes responsible for these trends. This work will help to understand the effects of Arctic vegetation change on permafrost temperatures. |
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