TY - STD AU - Schlichtholz P, Houssais M-N PY - 2011// TI - Forcing of oceanic heat anomalies by air-sea interactions in the Nordic Seas area T2 - 0148-0227 BT - J. Geophys. Res. SP - C01006- VL - 116 IS - C1 PB - AGU KW - Nordic Seas KW - heat anomalies KW - air-sea interactions KW - interanual variability KW - Atlantic water KW - 4215 Oceanography: General: Climate and interannual variability KW - 4504 Oceanography: Physical: Air/sea interactions KW - 4207 Oceanography: General: Arctic and Antarctic oceanography KW - 4263 Oceanography: General: Ocean predictability and prediction KW - 4572 Oceanography: Physical: Upper ocean and mixed layer processes KW - N2 - Hydrographic data and atmospheric reanalysis from 1982 to 2005 are used to show a strong link of the Atlantic water temperature (AWT) anomalies observed in the transition zone between the Norwegian Atlantic current and the West Spitsbergen current in summer to the surface heat flux (SHF) anomalies observed over the Barents Sea open water in the preceding late winter. A mechanism proposed for this link is formation of ocean temperature anomalies in a deep mixed layer and their subsequent westward export by a branch of Atlantic water recirculating in the western Barents Sea. The SHF anomalies over the Barents Sea are due to advection of temperature and humidity by anomalous winds across the Arctic ice edge and do not strongly depend on the North Atlantic oscillation (NAO). Correlations of up to about 0.9 between the AWT anomalies and indices of atmospheric variability over the Barents Sea open prospects for seasonal AWT predictability. It is also shown that the wind-forcing responsible for positive AWT anomalies is involved in a cyclonic perturbation of the atmospheric circulation over the Nordic Seas. This perturbation generates, through influence on the sea ice distribution, a lobe of SHF anomalies in the marginal ice zone (MIZ) on the eastern (Barents Sea) and western (Greenland Sea) sides of the Nordic Seas which has the opposite sign to the open water lobe. In contrast to the Barents Sea MIZ, the diabatic heating of the atmosphere by upward SHF anomalies in the Greenland Sea MIZ competes with cold advection. SN - 0148-0227 UR - http://dx.doi.org/10.1029/2009JC005944 N1 - exported from refbase (http://publi.ipev.fr/polar_references/show.php?record=3602), last updated on Tue, 30 Nov 1999 00:00:00 +0100 ID - SchlichtholzP2011 ER -