[pccgrads] Fudge on "VARIABLE RELATIONSHIP BETWEEN ACCUMULATION AND TEMPERATURE IN WEST ANTARCTICA FOR THE PAST 31, 000 YEARS" Th 5/26 at 2:30

UW PCC uwpcc at uw.edu
Wed May 25 09:20:46 PDT 2016


>>>>>> APL Seminar <<<<<<

Speaker: T.J. Fudge
Department of Earth and Space Sciences
University of Washington

Title: VARIABLE RELATIONSHIP BETWEEN ACCUMULATION AND TEMPERATURE IN WEST ANTARCTICA FOR THE PAST 31,000 YEARS

Time: Thursday, May 26, 2:30 PM

(Coffee/Tea, Cookies and Conversation at 2:00PM)

Place: APL Hardisty Conference Center

Abstract:

The Antarctic contribution to sea level is a balance between ice loss along the margin and accumulation in the interior. Accumulation records for the past few decades are noisy, and show inconsistent relationships with temperature. We investigate the relationship between accumulation and temperature for the past 31ka using high-resolution records from the WAIS Divide ice core in West Antarctica. Although the glacial-interglacial increases result in high correlation and moderate sensitivity for the full record, the relationship shows considerable variability through time with high correlation and high sensitivity for the 0-8ka period but no correlation for the 8-15ka period. This contrasts with a general circulation model simulation which shows homogeneous sensitivities between temperature and accumulation across the entire time period. These results suggest that variations in atmospheric circulation are an important driver of Antarctic accumulation but they are not adequately captured in model simulations. Model-based projections of future Antarctic accumulation, and its impact on sea level, should be treated with caution.

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UNIVERSITY STUDENTS, STAFF AND FACULTY WELCOME!

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Enter main (east) entrance to the Henderson Hall, and ask at desk
or follow signs to the Conference Center on the 6th floor.

To request disability accommodations, please contact the Office of
the ADA Coordinator; voice: 543-6450, E-mail: access\@u.washington.edu

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