SLS Seminar: Sarah Gille (Scripps)

Sarah Gille, Scripps
Wednesday, September 20, 12:00pm to 1:00pm

"Using the seasonal cycle to probe surface cooling and subsurface warming in the Southern Ocean"

Sea surface temperatures (SST) measured by satellite shows a long-term cooling trend in the Southern Ocean, while temperature profiles measured by Argo floats and historic hydrographic data indicate a long-term surface-tomid-depth warming trend. A number of studies have identified credible mechanisms to account for the differing surface and sub-surface trends. Data quality and spatial coverage of measurements might also lead to contradictory long-term temperature trends. The annual cycles in air-sea heat flux and upper ocean temperatures are used as a framework for further exploring upper ocean response to heating as well as long-term changes.

About the Series

The MIT Oceanography and Climate Sack Lunch Seminar Series is an informal student-run seminar series within PAOC. Seminar topics include all research concerning climate, geophysical fluid dynamics, biogeochemistry, paleo-oceanography/climatology and physical oceanography. The seminars usually take place on Wednesdays from 12:10-1pm in 54-915. The presentations are either given by an invited speaker or by a member of PAOC and can focus on new research or discussion of a paper of particular interest.