Reference : 21st century projections of surface mass balance changes for major drainage systems o...
Scientific journals : Article
Physical, chemical, mathematical & earth Sciences : Earth sciences & physical geography
http://hdl.handle.net/2268/133756
21st century projections of surface mass balance changes for major drainage systems of the Greenland ice sheet
English
Tedesco, M. []
Fettweis, Xavier mailto [Université de Liège - ULg > Département de géographie > Topoclimatologie >]
8-Nov-2012
Environmental Research Letters
Institute of Physics Publishing
7
045405
Yes (verified by ORBi)
International
1748-9326
Bristol
United Kingdom
[en] Outputs from the regional climate model Modèle Atmosphérique Régionale at a spatial resolution of 25 km are used to study 21st century projected surface mass balance (SMB) over six major drainage basins of the Greenland ice sheet (GrIS). The regional model is forced with the outputs of three different Earth System Models (CanESM2, NorESM1 and MIROC5) obtained when considering two greenhouse gas future scenarios with levels of CO2 equivalent of, respectively, 850 and >1370 ppm by 2100. Results indicate that the increase in runoff due to warming will exceed the increased precipitation deriving from the increase in evaporation for all basins, with the amount of net loss of mass at the surface varying spatially. Basins along the southwest and north coast are projected to have the highest sensitivity of SMB to increasing temperatures. For these basins, the global temperature anomaly corresponding to a decrease of the SMB below the 1980–99 average (when the ice sheet was near the equilibrium) ranges between +0.60 and +2.16 °C. For the basins along the northwest and northeast, these values range between +1.50 and +3.40 °C. Our results are conservative as they do not account for ice dynamics and changes in the ice sheet topography.
Researchers ; Professionals ; General public
http://hdl.handle.net/2268/133756
10.1088/1748-9326/7/4/045405
http://iopscience.iop.org/1748-9326/7/4/045405/

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