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          Institute: MPI für Meteorologie     Collection: Atmosphere in the Earth System     Display Documents



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ID: 224129.0, MPI für Meteorologie / Atmosphere in the Earth System
Impact of sea-surface temperature anomalies in the equatorial Indian Ocean and western Pacific on the Asian summer monsoon in three general circulation models
Authors:Tschuck, Peter; Chauvin, F.; Dong, B.; Arpe, Klaus
Language:English
Date of Publication (YYYY-MM-DD):2004-02
Title of Journal:International Journal of Climatology
Journal Abbrev.:Int. J. Climatol.
Volume:24
Issue / Number:2
Start Page:181
End Page:191
Review Status:Peer-review
Audience:Not Specified
Abstract / Description:The sensitivities of the Asian summer monsoon to sea-surface temperature (SST) anomalies in the equatorial Indian Ocean and the western Pacific are compared in three different general circulation models (ARPEGE, ECHAM, UGAMP). The impacts to idealized anomalies of 1 K show common features, notably a weaker monsoon for warm equatorial Indian Ocean SSTs. For a warm western Pacific, the impact over India shows a dipole structure with increases in the southern part and decreases in the northern part for the ECHAM and UGAMP models, with ARPEGE showing a different response. The models also disagree on the linearity of the impact. The response to cold anomalies is nearly the same, with opposite sign, as for warm anomalies in the ECHAM model but is non-linear in the ARPEGE and UGAMP models. The study underlines the need for accurate measurements of the regional SSTs, which are as equally important for local rainfall as the remote large-scale impact from the El Nino-Southern Ocean oscillation. Copyright (C) 2004 Royal Meteorological Society
Free Keywords:Asian monsoon; sea surface temperature; climate modelling; SENSITIVITY; RAINFALL; SCHEME; PARAMETERIZATION; PRECIPITATION; VARIABILITY; CLIMATE; PROJECT; MASS
External Publication Status:published
Document Type:Article
Version Comment:Automatic journal name synchronization
Communicated by:Carola Kauhs
Affiliations:MPI für Meteorologie/Physical Climate System
External Affiliations:Ctr Natl Rech Meteorol, Toulouse, France.; Univ Reading, Dept Meteorol, Reading, Berks, England.
Identifiers:ISI:000188859900004
ISSN:0899-8418
DOI:10.1002/joc.985
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