The Interannual Variations of Summer Precipitation in the Northern Indian Ocean Associated with ENSO

The Interannual Variations of Summer Precipitation in the Northern Indian Ocean Associated with

ENSO

YANG Ya-Li;DU Yan;WU Yan-Ling;HUANG Gang;ZHANG Yong-Sheng

【期刊名称】《大气和海洋科学快报（英文版）》 【年(卷),期】2012(005)004

【摘要】Using rainfall data from the Global Precipita- tion Climatology Project （GPCP）, NOAA extended reconstruction sea surface temperature （ERSST）, and NCEP/NCAR reanalysis, this study investigates the interannual variation of summer rainfall southwest of the Indian Peninsula and the northeastern Bay of Bengal associated with ENSO. The composite study indicates a decreased summer rainfall southwest of the Indian Penin- sula and an increase in the northeastern Bay of Bengal during the developing phase, but vice versa during the decay phase of E1 Nifio. Further regression analysis dem- onstrates that abnormal rainfall in the above two regions is controlled by different mechanisms. Southwest of the Indian Peninsula, the precipitation anomaly is related to local convection and water vapor flux in the decay phase of E1 Nifio. The anomalous cyclone circulation at the lower troposphere helps strengthen rainfall. In the northeastern Bay of Bengal, the anomalous rainfall depends on the strength of the Indian southwest summer monsoon （ISSM）. A strong/weak ISSM in the

developing/decay phase of E1 Nifio can bring more/less water vapor to strengthen/weaken the local summer precipitation. 【总页数】5页(301-305)

【关键词】夏季降水;北印度洋;ENSO;年际变化;西南季风;孟加拉湾;夏季降雨;降水异常

【作者】YANG Ya-Li;DU Yan;WU Yan-Ling;HUANG Gang;ZHANG Yong-Sheng

【作者单位】Graduate University of Chinese Academy of Sciences, Beijing 100049, China ~tate Key Laboratory of Tropical Oceanography, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guang-~hou

510301,

China;tate

Key

Laboratory

of

Tropical

Oceanography, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guang-~hou 510301, China;Graduate University of Chinese Academy of Sciences, Beijing 100049, China ~tate Key Laboratory of Tropical Oceanography, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guang-~hou 510301, China;Key Laboratory of Regional Climate-Environment Research for Temperate East Asia （RCE-TEA）, Institute of Atmospheric Physics,Chinese Academy of Sciences, Beijing 100029, China;Earth System Science Interdisciplinary Center （ESSIC）, University of Maryland, USA 【正文语种】中文

【中图分类】P457.6;U697.3 【文献来源】

https://www.zhangqiaokeyan.com/academic-journal-cn_atmospheric-oceanic-science-letters_thesis/0201252977062.html 【相关文献】

1.Interannual Variability of Sea Surface Temperature in the Northern Indian Ocean Associated with ENSO and IOD [J], WU Yan-Ling; DU Yan; ZHANG Yu-Hong; ZHENG Xiao-Tong

2.Circulation anomalies associated with interannual variation of early- and late-summer precipitation in Northeast China [J], SHEN BaiZhu; LIN ZhongDa; LU RiYu; LIAN Yi

3.Interannual variation of East Asian summer monsoon and its impacts on general circulation and precipitation [J], YU Shuqiu; SHI Xiaohui; LIN Xuechun

4.Relationship Between Upper-Ocean Heat Content in the Tropical Indian Ocean and Summer Precipitation in China [J], HUANG Ke; ZHANG Qi-Long; XIE Qiang; WANG Dong-Xiao

5.The Interannual Variability of Summer Rainfall in the Arid and Semiarid Regions of Northern China and Its Association with the Northern Hemisphere Circumglobal Teleconnection [J], 黄刚; 刘永; 黄荣辉

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