منابع مشابه
Greenland ice sheet melt from MODIS and associated atmospheric variability
Daily June-July melt fraction variations over the Greenland ice sheet (GIS) derived from the Moderate Resolution Imaging Spectroradiometer (MODIS) (2000-2013) are associated with atmospheric blocking forming an omega-shape ridge over the GIS at 500 hPa height. Blocking activity with a range of time scales, from synoptic waves breaking poleward (<5 days) to full-fledged blocks (≥5 days), brings ...
متن کاملSurface melt-induced acceleration of Greenland ice-sheet flow.
Ice flow at a location in the equilibrium zone of the west-central Greenland Ice Sheet accelerates above the midwinter average rate during periods of summer melting. The near coincidence of the ice acceleration with the duration of surface melting, followed by deceleration after the melting ceases, indicates that glacial sliding is enhanced by rapid migration of surface meltwater to the ice-bed...
متن کاملGreenland Ice Sheet sensitivity Pliocene
S. J. Koenig, A. M. Dolan, B. de Boer, E. J. Stone, D. J. Hill, R. M. DeConto, A. Abe-Ouchi, D. J. Lunt, D. Pollard, A. Quiquet, F. Saito, J. Savage, and R. van de Wal Department of Geosciences, University of Massachusetts, 611 N. Pleasant St, Amherst, MA 01003, USA School of Earth and Environment, Earth and Environment Building, University of Leeds, Leeds, LS2 9JT, UK Department of Earth Scien...
متن کاملGlobal Warming and the Greenland Ice Sheet
The Greenland coastal temperatures have followed the early 20th century global warming trend. Since 1940, however, the Greenland coastal stations data have undergone predominantly a cooling trend. At the summit of the Greenland ice sheet the summer average temperature has decreased at the rate of 2.2 ◦C per decade since the beginning of the measurements in 1987. This suggests that the Greenland...
متن کاملClouds enhance Greenland ice sheet meltwater runoff
The Greenland ice sheet has become one of the main contributors to global sea level rise, predominantly through increased meltwater runoff. The main drivers of Greenland ice sheet runoff, however, remain poorly understood. Here we show that clouds enhance meltwater runoff by about one-third relative to clear skies, using a unique combination of active satellite observations, climate model data ...
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ژورنال
عنوان ژورنال: Journal of Geophysical Research: Atmospheres
سال: 2001
ISSN: 0148-0227
DOI: 10.1029/2001jd900181