The Onset of the Monsoon over the Bay of Bengal： The Year-to-Year Variations

In situ buoy observation data spanning four years （2008-2011） were used to demonstrate the year-to-year variations of the monsoon onset processes in the Bay of Bengal （BOB）. A significant early （late） monsoon onset event in 2009 （2010） was analyzed in detail. It is found that the year-to-year variat...

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Bibliographic Details
Published in:Atmospheric and oceanic science letters = Daqi-he-haiyang-kexue-kuaibao 2012, Vol.5 (4), p.342-347
Main Authors: Wei-Dong, Yu, Kui-Ping, Li, Jian-Wei, Shi, Lin, Liu, Hui-Wu, Wang, Yan-Liang, Liu
Format: Article
Language:English
Subjects:
Bay of Bengal
BOB
Buoys
interannual variations
monsoon onset
Monsoons
Sea surface
Sea surface temperature
SST
Wind
不确定性
南海季风爆发
孟加拉湾
季节内振荡
年际变化
时间尺度
爆发过程
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Summary:In situ buoy observation data spanning four years （2008-2011） were used to demonstrate the year-to-year variations of the monsoon onset processes in the Bay of Bengal （BOB）. A significant early （late） monsoon onset event in 2009 （2010） was analyzed in detail. It is found that the year-to-year variations of monsoon onset can be attributed to either the interannual variability in the BoB SST or the irregular activities of the intra-seasonal oscillation （ISO）. This finding raises concern over the potential difficulties in simulating or predicting the monsoon onset in the BoB region. This uncertainty largely comes from the unsatisfactory model behavior at the intra-seasonal time scale.
ISSN:1674-2834
2376-6123
DOI:10.1080/16742834.2012.11447011