Duration of the South America summer monsoon is increasing

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 ten...

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Bibliographic Details
Published in:Atmospheric Science Letters
Main Authors: Rao, V. Brahmananda, Franchito, Sergio H., Gan, Manoel A., Gerolamo, Renato O. P.
Format: Article in Journal/Newspaper
Language:English
Published: Wiley 2013
Subjects:
South Atlantic Ocean
Online Access:http://dx.doi.org/10.1002/asl2.476
https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fasl2.476
https://rmets.onlinelibrary.wiley.com/doi/pdf/10.1002/asl2.476
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Summary: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 .

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