[PDF] Top 20 Vital role of daily temperature variability in surface mass balance parameterizations of the Greenland Ice Sheet

... of their agreement with the results of the regional model RACMO2/GR and recent satellite observations. We conclude that the modeled SMB of the GIS is largely determined by the low summer SD values identified by in situ ... See full document

... recent Greenland ice sheet (GrIS) surface mass balance (SMB) decrease rel- ative to the last century, we have forced the regional cli- mate MAR (Modèle Atmosphérique Régional; ... See full document

... of ice sheet model ...day-to-day variability is implicitly taken into ...in ice sheet topography is to frequently feed the new topography from the ice sheet model into the ... See full document

... sea ice off Newfoundland [48] and warming sea surface temperatures in the Labrador Sea and Baffin Bay encouraging calving increases ...southern Greenland (electronic supplementary material, figure ... See full document

... near- surface temperature and precipitation from three different RCMs (11–25 km spatial resolution) to force a glacier mass balance model on a 250 m grid derived from the Greenland ... See full document

... the Greenland ice sheet (GrIS) has been losing mass at an increasing rate, on average 142 ± 49 Gt a −1 with a total contribution to global sea level of about 8 mm (Shepherd et ...based ... See full document

... new Surface Energy and Mass bal- ance model of Intermediate Complexity for snow- and ice- covered surfaces that is simple and fast enough for long- term integrations up to glacial ...and mass ... See full document

... of temperature, specific humidity, pressure, wind speed and direction being prescribed at each of the 40 vertical atmosphere hybrid model ...inter-annual variability in this new model version, upper ... See full document

... A regional climate model (MAR) was used to assess the GrIS SMB sensitivity to perturbations in SIC and SST in the seas surrounding Greenland. The results confirm previous find- ings that the direct impact of ... See full document

... near-surface temperature, turbulent heat fluxes, net longwave radiation, and sea ice extent in EC-1K and EC-6K with ERA-Interim over the entire area in ...climate variability. This precludes a ... See full document

... interannual variability is less sensitive to the lack of measurements over the GrIS, the more so since the variability along the coast is a good proxy for the whole GrIS variability according to ... See full document

... modelled surface mass balance total is explained by the summer (from 1 June to 31 August) temperature and the annual precipitation ...the ice sheet margin where the amount of ... See full document

... the Greenland and Antarctic ice sheets to changing ...The surface mass balance (SMB) of the Greenland Ice Sheet (GrIS) has a nonlinear re- sponse to ...in ... See full document

... west Greenland, as a contribution to the Green- land Climate Network (GC-Net, Steffen and Box, ...for temperature, humidity and wind speed, which makes them especially suitable for SEB ...the surface ... See full document

... of ice sheets and present-day dy- namic conditions can be captured in one continuous run of an ice-sheet model, there needs to be a shift in the way we approach integrating data into transient ... See full document

... the mass bud- get of polar glaciers and ice ...and mass balance ...these parameterizations is ...refreezing parameterizations against output of two Regional Climate Models (RCMs) ... See full document

... increasing surface melt since the early 1990s with the increasing frequency, and partly duration, of very large GBI (Greenland blocking episodes, GBEs), in line with results from our observation- driven ... See full document

... the surface albedo) in the GCMs is still found to be lacking in accuracy, mainly because of inadequate parameterizations (Roesch et ...the surface melt of the GrIS at high spatial resolution (10–25 ... See full document

... to mass, for example a fresh-snow density, or a representa- tive density for the entire firn layer ...for Greenland). This assumption is still commonly made over smaller ice caps and glaciers ...the ... See full document

... require ice sheet boundary mi- gration, ...observed surface veloci- ties and the domain therefore limited to the present-day ice ...evolving ice streams, would be ...initial ice ... See full document