Members of our IGERT cohort are involved with many diverse research projects. I study evaporation by measuring ratios of oxygen and hydrogen isotopes. My research is part of a larger project called the Isotopic Investigation of Sea-ice and Precipitation in the Arctic Climate System (iisPACS) which investigates the link between decreasing sea ice coverage and precipitation changes. The evaporation rate is linked to the mixing of air in the planetary boundary layer which is often difficult to estimate accurately in remote locations where few field observations exist.
Near Kangerlussuaq, we tested water vapor isotopic content and other weather variables over lakes, and land. Differences in these isotopic ratios can tell us if air moisture originated from the ice margin, lakes, the nearby fjord, or more distant locations. I’m most interested in studying the exchange of moisture between air and water under different conditions by looking at vapor over water bodies. Climate models, and the interpretation of ice core records will benefit from improved understanding of this important part of the global hydrologic cycle.