Greenland Ice Sheet’s elevation change in winter and atmospheric circulation

Nuuk Climate Days 2009 -- Changes of the Greenland Cryosphere Workshop & The Arctic Freshwater Budget International Symposium, Nuuk, Greenland, 25-27 August 2009

Primary author: CHEN, Linling (Nansen-Zhu International research center/Institute of Atmospheric Physics,
Chinese Academy of Sciences), lin-ling.chen@nersc.no ; Co-authors: JOHANNESSEN, Ola M. (Nansen Environmental and Remote Sensing Center); WANG, Huijun (Nansen-Zhu International research center/Institute of Atmospheric Physics, Chinese Academy of Sciences);  KHVOROSTOVSKY, Kirill (Nansen Environmental and Remote Sensing Center)

Abstract ID: F4
 
Greenland Ice Sheet’s elevation change in winter and atmospheric circulation

Data from ERS-1, ERS-2 and Envisat Satellites are analyzed to identify the relationship between winter elevation variations of Greenland ice sheet and sea level pressure during 1993-2007. It is found that the North Pacific oscillation and the North Atlantic oscillation, the two major teleconnection patterns of surface pressure fields in North Hemisphere, both have significant impacts on the Greenland ice sheet winter elevation change by influencing accumulation. In addition, we are evaluating modeled precipitation data over Greenland based on comparison with accumulation data from all available ice core records and meteorological station, in order to better understand how the atmospheric circulation impact the Greenland Ice Sheet’s Elevation.