caa a22 4500 445814071 CHVBK 20180317145220.0 cr unu---uuuuu 170323e20110901xx s 000 0 eng 10.1007/s10712-011-9142-2 doi (NATIONALLICENCE)springer-10.1007/s10712-011-9142-2 Response of a Coupled Ocean-Atmosphere Model to Greenland Ice Melting [Elektronische Daten] [D. Stammer, N. Agarwal, P. Herrmann, A. Köhl, C. Mechoso] We investigate the transient response of the global coupled ocean-atmosphere system to enhanced freshwater forcing representative of melting of the Greenland ice sheets. A 50-year long simulation by a coupled atmosphere-ocean general circulation model (CGCM) is compared with another of the same length in which Greenland melting is prescribed. To highlight the importance of coupled atmosphere-ocean processes, the CGCM results are compared with those of two other experiments carried out with the oceanic general circulation model (OGCM). In one of these OGCM experiments, the prescribed surface fluxes of heat, momentum and freshwater correspond to the unperturbed simulation by the CGCM; in the other experiment, Greenland melting is added to the freshwater flux. The responses by the CGCM and OGCM to the Greenland melting have similar patterns in the Atlantic, albeit the former having five times larger amplitudes in sea surface height anomalies. The CGCM shows likewise stronger variability in all state variables in all ocean basins because the impact of Greenland melting is quickly communicated to all ocean basins via atmospheric bridges. We conclude that the response of the global climate to Greenland ice melting is highly dependent on coupled atmosphere-ocean processes. These lead to reduced latent heat flux into the atmosphere and an associated increase in net freshwater flux into the ocean, especially in the subpolar North Atlantic. The combined result is a stronger response of the coupled system to Greenland ice sheet melting. Springer Science+Business Media B.V., 2011 Greenland ice sheet melting nationallicence Sealevel rise nationallicence Coupled atmosphere-ocean experiments nationallicence Stammer D. Institut für Meereskunde, Universität Hamburg, Hamburg, Germany aut Agarwal N. Max-Planck-Institut für Meteorologie, Hamburg, Germany aut Herrmann P. Max-Planck-Institut für Meteorologie, Hamburg, Germany aut Köhl A. Institut für Meereskunde, Universität Hamburg, Hamburg, Germany aut Mechoso C. University of California, Los Angeles, Los Angeles, CA, USA aut Surveys in Geophysics Springer Netherlands 32/4-5(2011-09-01), 621-642 0169-3298 32:4-5<621 2011 32 10712 https://doi.org/10.1007/s10712-011-9142-2 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10712-011-9142-2 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Stammer D. Institut für Meereskunde, Universität Hamburg, Hamburg, Germany aut NATIONALLICENCE 700 1- Agarwal N. Max-Planck-Institut für Meteorologie, Hamburg, Germany aut NATIONALLICENCE 700 1- Herrmann P. Max-Planck-Institut für Meteorologie, Hamburg, Germany aut NATIONALLICENCE 700 1- Köhl A. Institut für Meereskunde, Universität Hamburg, Hamburg, Germany aut NATIONALLICENCE 700 1- Mechoso C. University of California, Los Angeles, Los Angeles, CA, USA aut NATIONALLICENCE 773 0- Surveys in Geophysics Springer Netherlands 32/4-5(2011-09-01), 621-642 0169-3298 32:4-5<621 2011 32 10712 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer