气候变化领域集成服务门户(CCPortal): Cross-basin interactions between the tropical atlantic and pacific in the ECMWF hindcasts

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DOI	10.1175/JCLI-D-20-0140.1
	Cross-basin interactions between the tropical atlantic and pacific in the ECMWF hindcasts
	Ma J.; Xie S.-P.; Xu H.; Zhao J.; Zhang L.
发表日期	2021
ISSN	08948755
起始页码	2459
结束页码	2472
卷号	34 期号:7
英文摘要	Using the ensemble hindcasts of the European Centre for Medium-Range Weather Forecasts (ECMWF) coupled model for the period of 1980-2005, spatiotemporal evolution in the covariability of sea surface temperature (SST) and low-level winds in the ensemble mean and spread over the tropical Atlantic is investigated with the month-reliant singular value decomposition (SVD) method, which treats the variables in a given monthly sequence as one time step. The leading mode of the ensemble mean represents a coevolution of SST and winds over the tropical Atlantic associated with a phase transition of El Niño from the peak to decay phase, while the second mode is related to a phase transition from El Niño toLaNiña, indicating a precursory role of the north tropical Atlantic (NTA) SST warming in La Niña development. The leading mode of ensemble spread in SST and winds further illustrates that an NTA SST anomaly acts as a precursor for El Niño-Southern Oscillation (ENSO). A north-tropical pathway for the delayed effect of the NTA SST anomaly on the subsequent ENSO event is identified; the NTA SST warming induces the subtropical northeast Pacific SST cooling through the modulation of a zonal-vertical circulation, setting off a North Pacific meridional mode (NPMM). The coupled SST-wind anomalies migrate southwestward to the central equatorial Pacific and eventually amplify into a La Niña event in the following months due to the equatorial Bjerknes feedback. Ensemble spread greatly increases the sample size and affords insights into the interbasin interactions between the tropical Atlantic and Pacific, as demonstrated here in the NTA SST impact on ENSO. © 2021 American Meteorological Society.
英文关键词	Atlantic Ocean; Atmosphere-ocean interaction; El Niño; ENSO; La Niña; Sea surface temperature
语种	英语
scopus关键词	Atmospheric pressure; Climatology; Singular value decomposition; Surface waters; Tropics; Weather forecasting; Wind; Bjerknes feedback; Equatorial Pacific; European centre for medium-range weather forecasts; Sea surface temperature (SST); Singular value decomposition method; Southern oscillation; Spatiotemporal evolution; Vertical circulation; Oceanography; air-sea interaction; climate modeling; El Nino-Southern Oscillation; hindcasting; La Nina; meridional circulation; sea surface temperature; weather forecasting; wind velocity; Atlantic Ocean; Atlantic Ocean (Tropical); Pacific Ocean; Pacific Ocean (Equatorial)
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/178670
作者单位	Collaborative Innovation Center on Forecast and Evaluation of Meteorological Disasters, KLME, ILCEC, Nanjing University of Information Science and Technology, Nanjing, China; Scripps Institution of Oceanography, University of California San Diego, San Diego, CA, United States; Division of Environmental Science and Engineering, Pohang University of Science and Technology, Pohang, South Korea; Joint Innovation Center for Modern Forestry Studies, College of Biology and Environment, Nanjing Forestry University, Nanjing, China
推荐引用方式 GB/T 7714	Ma J.,Xie S.-P.,Xu H.,et al. Cross-basin interactions between the tropical atlantic and pacific in the ECMWF hindcasts[J],2021,34(7).
APA	Ma J.,Xie S.-P.,Xu H.,Zhao J.,&Zhang L..(2021).Cross-basin interactions between the tropical atlantic and pacific in the ECMWF hindcasts.Journal of Climate,34(7).
MLA	Ma J.,et al."Cross-basin interactions between the tropical atlantic and pacific in the ECMWF hindcasts".Journal of Climate 34.7(2021).