september, 2019

04sep1:00 pm2:00 pmThe heat is on: investigating new applications for thermal infrared imagery in glacier-ocean systemsTasha Snow1:00 pm - 2:00 pm SOI new Speaker organisation: University of Colorado Boulder

Event Details

The Greenland ice sheet contributes one-quarter of global sea level rise each year, and one-third of its loss occurs at its outlet glaciers. Antarctica’s contributions are more uncertain, but ice loss seems to be accelerating. Melting at the ice-ocean boundary through interactions with relatively warm ocean water is one mechanism for these ice losses. In situ measurements serve as the predominant method for studying these harsh and remote ocean environments but have often only been acquired within the last decade and only in a few locations around Greenland and Antarctica. Since many glaciers and ice shelves ringing the ice sheets began to change before that period, the lack of earlier measurements requires us to rely on an understanding of contemporary ocean processes and, from that, make inferences of past conditions to evaluate the ocean’s role in observed glacier change. Satellite-derived thermal infrared imagery may provide insight into glacier-ocean interactions, but it has been historically underutilized around the ice sheets. We explore the utility of thermal infrared imagery using sea surface temperatures (SST) and ice temperatures in case studies from Greenland and Antarctica. From the reconstruction of deep water temperatures in SE Greenland to the tracking of city-sized iceberg calvings during Antarctic polar night, our work suggests thermal infrared can provide new insights into ocean and ice variability that will enhance our understanding of the phenomena that cause glacier and ice shelf change.

Time

(Wednesday) 1:00 pm - 2:00 pm

Location

SOI new

Speaker organisation

University of Colorado Boulder

Organizer

Lars Boehme

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