Open AccessDuration of the South America summer monsoon is increasing
Author(s) -
Rao V. Brahmananda,
Franchito Sergio H.,
Gan Manoel A.,
Gerolamo Renato O. P.
Publication year - 2013
Publication title -
atmospheric science letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.951
H-Index - 45
ISSN - 1530-261X
DOI - 10.1002/asl2.476
Subject(s) - climatology , duration (music) , monsoon , sea surface temperature , environmental science , period (music) , geography , oceanography , geology , art , physics , literature , acoustics
Abstract We studied the interannual variability of the beginning, end and duration of South American monsoon system ( SAMS ) for the period 1956–2006. The mean beginning date was 10 October, whereas the mean end date was 6 April, and the mean duration was 174 days. The beginning of SAMS showed a tendency to start earlier and the end date showed a tendency to delay; thus, the duration of SAMS showed a tendency to increase by about 7 days in 10 years. We found that the beginning and end dates of SAMS have significant positive correlation with sea surface temperature ( SST ) of an earlier period at southwest Africa in the South Atlantic Ocean. This suggests the potential of SST in the prediction of the beginning and end dates of SAMS .