CASPO seminar: "Progress in Estimating and Observing Ocean-Ice Melting of the Greenland Ice Sheet"


 
11/06/2013 - 3:30pm to 4:30pm

Ian Fenty (Jet Propulsion Laboratory) 

Progress in Estimating and Observing Ocean-Ice Melting of the Greenland Ice Sheet

Greenland Ice Sheet mass loss has accelerated over the last two decades due to increases in surface and lateral melting and iceberg calving. While difficult to directly observe, changes in the subaqeous melt rates at the ocean-ice interface of marine-terminating glaciers (MTG) have been hypothesized to drive much of the recent observed ice mass in Greenland’s Southeast, West and Northwest – sectors where relatively warm, salty subtropical-origin waters circulate along Greenland’s boundary current system at depth 200-400 m. This talk (1) examines the pattern of spreading of these warm waters around Greenland for the years 1992-2009 using a high resolution (4-km horizontal grid) coupled ocean and sea ice simulation and (2) reports on bathymetric and hydrographic observations from summer cruises in 2012 and 2013 to West Greenland. In addition, I will describe ongoing work to estimate Greenland ocean-ice melting using (1) regional ocean modeling and (2) through the development of a new NASA mission.

 

Event Contact: 
Jessica Millar
Event Calendar: 
Location: 
Nierenberg Hall rm 101