%0 Journal Article
%9 ACL : Articles dans des revues avec comité de lecture répertoriées par l'AERES
%A Masson, S.
%A Luo, J. J.
%A Madec, G.
%A Vialard, J.
%A Durand, F.
%A Gualdi, S.
%A Guilyardi, E.
%A Behera, S.
%A Delecluse, P.
%A Navarra, A.
%A Yamagata, T.
%T Impact of barrier layer on winter-spring variability of the southeastern Arabian Sea - art. no. L07703
%D 2005
%L PAR00000224
%G ENG
%J Geophysical Research Letters
%@ 0094-8276
%K INDE
%K MER D'ARABIE
%M CC:0002283762-0001
%N 7
%P NIL_15-NIL_18
%R 10.1029/2004GL021980
%U https://www.documentation.ird.fr/hor/PAR00000224
%V 32
%W Horizon (IRD)
%X In the present study, we use a coupled model to evaluate the effect of shallow salinity stratification on the sea surface temperature (SST) and on the monsoon onset in the southeastern Arabian Sea (SEAS). A 100-year control experiment shows that the coupled model reproduces the main climatic features in this region in terms of SST, precipitation and barrier layer (BL). A 100-year sensitivity experiment (where BL effects have been suppressed in the SEAS) shows that BL enhances the spring SST warming by 0.5 degrees C, and leads to a statistically significant increase of precipitation in May (3 mm/day) linked to an early (10 to 15 days) monsoon onset. This suggests that the BL extent may be a useful predictor of the summer monsoon onset in the area with a two-month lead-time. However the effect above is mostly concentrated in the SEAS, and there is no significant impact over continental India.
%$ 032 ; 064