Different impacts of various El Nino events on the Indian Ocean Dipole
Wang, X; Wang, CZ; chunzai.wang@noaa.gov
2014
发表期刊CLIMATE DYNAMICS
ISSN0930-7575
卷号42期号:41702页码:991-1005
摘要Our early work (Wang and Wang in J Clim 26:1322-1338, 2013) separates El Nio Modoki events into El Nio Modoki I and II because they show different impacts on rainfall in southern China and typhoon landfall activity. The warm SST anomalies originate in the equatorial central Pacific and subtropical northeastern Pacific for El Nio Modoki I and II, respectively. El Nio Modoki I features a symmetric SST anomaly distribution about the equator with the maximum warming in the equatorial central Pacific, whereas El Nio Modoki II shows an asymmetric distribution with the warm SST anomalies extending from the northeastern Pacific to the equatorial central Pacific. The present paper investigates the influence of the various groups of El Nio events on the Indian Ocean Dipole (IOD). Similar to canonical El Nio, El Nio Modoki I is associated with a weakening of the Walker circulation in the Indo-Pacific region which decreases precipitation in the eastern tropical Indian Ocean and maritime continent and thus results in the surface easterly wind anomalies off Java-Sumatra. Under the Bjerknes feedback, the easterly wind anomalies induce cold SST anomalies off Java- Sumatra, and thus a positive IOD tends to occur in the Indian Ocean during canonical El Nio and El Nio Modoki I. However, El Nio Modoki II has an opposite impact on the Walker circulation, resulting in more precipitation and surface westerly wind anomalies off Java-Sumatra. Thus, El Nio Modoki II is favorable for the onset and development of a negative IOD on the frame of the Bjerknes feedback.
部门归属[Wang, Xin] Univ Miami, Cooperat Inst Marine & Atmospher Studies, Miami, FL USA ; [Wang, Xin ; Wang, Chunzai] NOAA, Atlantic Oceanog & Meteorol Lab, Miami, FL 33149 USA ; [Wang, Xin] Chinese Acad Sci, State Key Lab Trop Oceanog, South China Sea Inst Oceanol, Guangzhou, Guangdong, Peoples R China
资助者National Oceanic and Atmospheric Administration (NOAA) Climate Program Office; NOAA Atlantic Oceanographic and Meteorological Laboratory (AOML); National Basic Research Program of China [2013CB430301]; Chinese Academy of Sciences ; National Oceanic and Atmospheric Administration (NOAA) Climate Program Office; NOAA Atlantic Oceanographic and Meteorological Laboratory (AOML); National Basic Research Program of China [2013CB430301]; Chinese Academy of Sciences ; National Oceanic and Atmospheric Administration (NOAA) Climate Program Office; NOAA Atlantic Oceanographic and Meteorological Laboratory (AOML); National Basic Research Program of China [2013CB430301]; Chinese Academy of Sciences ; National Oceanic and Atmospheric Administration (NOAA) Climate Program Office; NOAA Atlantic Oceanographic and Meteorological Laboratory (AOML); National Basic Research Program of China [2013CB430301]; Chinese Academy of Sciences
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收录类别sci
资助项目LTO
资助者National Oceanic and Atmospheric Administration (NOAA) Climate Program Office; NOAA Atlantic Oceanographic and Meteorological Laboratory (AOML); National Basic Research Program of China [2013CB430301]; Chinese Academy of Sciences ; National Oceanic and Atmospheric Administration (NOAA) Climate Program Office; NOAA Atlantic Oceanographic and Meteorological Laboratory (AOML); National Basic Research Program of China [2013CB430301]; Chinese Academy of Sciences ; National Oceanic and Atmospheric Administration (NOAA) Climate Program Office; NOAA Atlantic Oceanographic and Meteorological Laboratory (AOML); National Basic Research Program of China [2013CB430301]; Chinese Academy of Sciences ; National Oceanic and Atmospheric Administration (NOAA) Climate Program Office; NOAA Atlantic Oceanographic and Meteorological Laboratory (AOML); National Basic Research Program of China [2013CB430301]; Chinese Academy of Sciences
WOS记录号WOS:000330731300026
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被引频次:41[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.scsio.ac.cn/handle/344004/10578
专题热带海洋环境国家重点实验室(LTO)
通讯作者chunzai.wang@noaa.gov
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Wang, X,Wang, CZ,chunzai.wang@noaa.gov. Different impacts of various El Nino events on the Indian Ocean Dipole[J]. CLIMATE DYNAMICS,2014,42(41702):991-1005.
APA Wang, X,Wang, CZ,&chunzai.wang@noaa.gov.(2014).Different impacts of various El Nino events on the Indian Ocean Dipole.CLIMATE DYNAMICS,42(41702),991-1005.
MLA Wang, X,et al."Different impacts of various El Nino events on the Indian Ocean Dipole".CLIMATE DYNAMICS 42.41702(2014):991-1005.
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