气候变化领域集成服务门户(CCPortal): Eastern Pacific Wind Effect on the Evolution of El Niño: Implications for ENSO Diversity

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DOI	10.1175/JCLI-D-19-0435.1
	Eastern Pacific Wind Effect on the Evolution of El Niño: Implications for ENSO Diversity
	Peng Q.; Xie S.-P.; Wang D.; Kamae Y.; Zhang H.; Hu S.; Zheng X.-T.; Wang W.
发表日期	2020
ISSN	0894-8755
起始页码	3197
结束页码	3212
卷号	33 期号:8
英文摘要	The influence of eastern tropical Pacific (EPAC; 108S–108N, 1408–808W) wind anomalies on El Niño is investigated using observations and model experiments. Extreme and moderate El Niños exhibit contrasting anomalous wind patterns in the EPAC during the peak and decay phases: westerly wind anomalies during extreme El Niño and southeasterly (southwesterly) wind anomalies south (north) of the equator during moderate El Niño. Experiments with an ocean general circulation model indicate that for extreme El Niño, the eastward intrusion of westerly wind anomalies contributes to the prolonged positive sea surface temperature (SST) anomalies in the eastern equatorial Pacific throughout boreal spring by weakened upwelling and horizontal advection. For moderate El Niño, by contrast, both the meridional and zonal anomalous winds over the EPAC are important in the rapid (slow) SST cooling south (north) of the equator through advection and wind–evaporation–SST feedback. Atmospheric model experiments confirm that these EPAC anomalous winds are primarily forced by tropical SST anomalies. The interplay between wind and SST anomalies suggests positive air–sea feedbacks over EPAC during the decay phase of El Niño. Ocean model results show that the frequency of extreme El Niño increases when EPAC wind anomalies are removed, suggesting the importance of EPAC winds for El Niño diversity. © 2020 American Meteorological Society.
英文关键词	Advection; Surface waters; Tropics; Wind effects; Atmospheric model; Eastern equatorial Pacific; Eastern pacific; Eastern tropical pacific; Horizontal advection; Model experiments; Ocean general circulation models; Sea surface temperature anomalies; Oceanography; air-sea interaction; climate feedback; El Nino; El Nino-Southern Oscillation; formation mechanism; oceanic general circulation model; sea surface temperature; temperature anomaly; wind direction; wind field; Pacific Ocean; Pacific Ocean (East); Pacific Ocean (Tropical)
语种	英语
来源期刊	Journal of Climate
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/171539
作者单位	State Key Laboratory of Tropical Oceanography, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou, China; Scripps Institution of Oceanography, University of California, San Diego, San diego, CA, United States; University of Chinese Academy of Sciences, Beijing, China; Guangdong Provincial Key Laboratory of Marine Resources and Coastal Engineering, School of Marine Science, Sun Yat-sen University, Guangzhou, China; Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Zhuhai, China; Faculty of Life and Environmental Sciences, University of Tsukuba, Tsukuba, Japan; Joint Institute for Regional Earth System Science and Engineering, University of California, Los Angeles, Los Angeles, CA, United States; Lamont-Doherty Earth Observatory, Columbia University, Palisades, NY, United States; Physical Oceanography Laboratory, Ocean University of China, Qingdao National Laboratory for Marine Science and Technology, Qingdao, China; Southern Marine Science and Engineering G...
推荐引用方式 GB/T 7714	Peng Q.,Xie S.-P.,Wang D.,et al. Eastern Pacific Wind Effect on the Evolution of El Niño: Implications for ENSO Diversity[J],2020,33(8).
APA	Peng Q..,Xie S.-P..,Wang D..,Kamae Y..,Zhang H..,...&Wang W..(2020).Eastern Pacific Wind Effect on the Evolution of El Niño: Implications for ENSO Diversity.Journal of Climate,33(8).
MLA	Peng Q.,et al."Eastern Pacific Wind Effect on the Evolution of El Niño: Implications for ENSO Diversity".Journal of Climate 33.8(2020).