Publications of Alexandre Belleflamme
Bookmark and Share    
Full Text
See detailAnalysis of the atmospheric circulation simulated by GCMs over Greenland
Belleflamme, Alexandre ULiege; Fettweis, Xavier ULiege; Erpicum, Michel ULiege

Conference (2010, November 05)

The variability of the geopotential height at 500 hPa simulated by General Circulation Models (GCMs) over Greenland is evaluated using an atmospheric circulation type classification. The GCM outputs for ... [more ▼]

The variability of the geopotential height at 500 hPa simulated by General Circulation Models (GCMs) over Greenland is evaluated using an atmospheric circulation type classification. The GCM outputs for the current climate (20C3M) are first compared to reanalysis data over 1961-1990. The comparison shows that most of them simulate well the main circulation types but fail to reproduce their frequencies because of underestimations of circulation variability and biases in the mean geopotential height. GCM-based future projections do not individualise new circulation types but show a general increase of the geopotential height. Based on this approach, the correlation between surface temperature and atmospheric circulation offers a new way for estimating the Greenland ice sheet melt. [less ▲]

Detailed reference viewed: 52 (14 ULiège)