Altitude dependence of the ice sheet surface climate

Details Altitude dependence of the ice sheet surface climate Altitude dependence of the ice sheet surface climate

Aug 1999

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999georl..26.2227k&link_type=abstract

Geophysical Research Letters, Volume 26, Issue 15, p. 2227-2230

Physics

23

Meteorology And Atmospheric Dynamics: Polar Meteorology, Meteorology And Atmospheric Dynamics: Numerical Modeling And Data Assimilation, Global Change: Climate Dynamics, Information Related To Geographic Region: Arctic Region

Scientific paper

The dependence of surface climate on elevation changes is evaluated for Greenland and Antarctica in an atmospheric general circulation model (AGCM) sensitivity study. The results indicate a rather low temperature sensitivity of ~-5 K km-1 near the coasts, which is weaker than the values often used in parameterizations in climate models. In the plateau areas, the sensitivity is stronger (-10 K km-1). Relative precipitation change is relatively strong (~-10%/100 m) on the plateaus, while near the coasts, precipitation strengthens when the surface elevation is increased.

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