Print Email Facebook Twitter Representing Greenland ice sheet freshwater fluxes in climate models Title Representing Greenland ice sheet freshwater fluxes in climate models Author Lenaerts, J.T.M. Le Bars, D. Van Kampenhout, L. Vizcaino, M. Enderlin, E.M. Van den Broeke, M.R. Faculty Civil Engineering and Geosciences Department Geoscience & Remote Sensing Date 2015-08-16 Abstract Here we present a long-term (1850–2200) best estimate of Greenland ice sheet (GrIS) freshwater runoff that improves spatial detail of runoff locations and temporal resolution. Ice discharge is taken from observations since 2000 and assumed constant in time. Surface meltwater runoff is retrieved from regional climate model output for the recent past and parameterized for the future based on significant correlations between runoff and midtropospheric (500 hPa) summer temperature changes over the GrIS. The simplicity of this approach enables assimilation of meltwater runoff into coupled climate models, which is demonstrated here in a case study with the medium-resolution (1?) Community Earth System Model. The model results suggest that the decrease in Atlantic Meridional Overturning Circulation (AMOC) is dominated by warming of the surface ocean and enhanced GrIS freshwater forcing leads to a slightly enhanced (?1.2 sverdrup in the 21st century) weakening of the AMOC. To reference this document use: http://resolver.tudelft.nl/uuid:b5f67368-0300-4470-9625-a7d0d7b61b28 Publisher American Geophysical Union ISSN 0094-8276 Source https://doi.org/10.1002/2015GL064738 Source Geophysical Research Letters, 42 (15), 2015 Part of collection Institutional Repository Document type journal article Rights © 2015 American Geophysical Union Files PDF 319493.pdf 1.47 MB Close viewer /islandora/object/uuid:b5f67368-0300-4470-9625-a7d0d7b61b28/datastream/OBJ/view