HR: 14:40h
AN: C13A-05 INVITED    [Abstracts]
TI: Greenland outlet glacier sensitivity to surface melting and other key factors
AU: * Box, J E
EM: jbox.greenland@gmail.com
AF: Byrd Polar Research Center, Scott Hall, Rm 108 1090 Carmack Rd, Columbus, OH 43201, United States
AU: Lei, Y
EM: yang.998@osu.edu
AF: Byrd Polar Research Center, Scott Hall, Rm 108 1090 Carmack Rd, Columbus, OH 43201, United States
AU: Adam, H
EM: adamrhster@gmail.com
AF: Byrd Polar Research Center, Scott Hall, Rm 108 1090 Carmack Rd, Columbus, OH 43201, United States
AB: Greenland outlet glaciers drain the vast inland ice sheet and thus deliver amounts of ice that influence global sea level and ocean thermohaline circulation. Outlet glaciers velocity has been observed to fluctuate in ways that implicate a response to warming. Observed outlet glacier velocities from publications spanning several decades are thus compared with surface air temperatures and modeled melt rates to quantify inter-annual glacier velocity sensitivity to melting. Correlation statistics indicate a seasonal dimension of flow speed sensitivity to melt. Melt alone, of course, is not the sole factor that explains a glacier's behavior. The history of a glaciers' terminus position is thus also invoked to tells a story that makes clear that the multiple factors of glacier thickness, buttressing forces, driving stress, and melt rates must all be considered simultaneously to understand glacier sensitivity to climate change.
DE: 0776 Glaciology (1621, 1827, 1863)
DE: 1621 Cryospheric change (0776)
DE: 1863 Snow and ice (0736, 0738, 0776, 1827)
DE: 3305 Climate change and variability (1616, 1635, 3309, 4215, 4513)
DE: 4215 Climate and interannual variability (1616, 1635, 3305, 3309, 4513)
SC: Cryosphere [C]
MN: 2007 Fall Meeting