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学科主题: Oceanography
题名: El Nino and El Nino Modoki variability based on a new ocean reanalysis
作者: Wang, DX ; Qin, YH ; Xiao, XJ ; Zhang, ZQ ; Wu, XY
通讯作者: dxwang@scsio.ac.cn
关键词: Ocean reanalysis ; El Nino ; El Nino Modoki ; Variability
刊名: OCEAN DYNAMICS
发表日期: 2012
卷: 62, 期:9, 页:1311-1322
部门归属: [Wang, Dongxiao; Qin, Yinghao] Chinese Acad Sci, SCSIO, State Key Lab Trop Oceanog LTO, Guangzhou 510301, Guangdong, Peoples R China; [Qin, Yinghao] Chinese Acad Sci, Grad Sch, Beijing 100049, Peoples R China; [Xiao, Xianjun; Zhang, Zuqiang] Natl Climate Ctr, Beijing 100081, Peoples R China; [Wu, Xiangyu] Natl Marine Environm Forecasting Ctr, Beijing 100081, Peoples R China
项目归属: LTO
摘要: A new ocean reanalysis, covering the period from 1990 to 2009, is evaluated against observational sea surface temperature (SST) and sea surface height (SSH) data in reproducing the temporal characteristics of El Nio and El Nio Modoki. The new reanalysis assimilates the available SST, temperature-salinity profile, and satellite altimetry data sets into a global ocean model forced with surface boundary conditions from the National Centers for Environmental Prediction atmospheric reanalysis 2. Using the Nio 3 index and the improved El Nio Modoki index, to distinguish between El Nio and El Nio Modoki signals, our results show that the two time series in the new reanalysis are in agreement with those obtained from observations during the study period. A composite analysis method is used to demonstrate the temporal evolution of these two types of El Nio. The new reanalysis has the advantage of representing the strength and location of El Nio events better than the control run, with an increase in the spatial correlation, but El Nio variability in the reanalysis is weak in the eastern Pacific, particularly off the coast of South America. As for the El Nio Modoki events, the initiation, development, and termination of the warm SST anomalies all occur in the central Pacific. All main features associated with the warm SST anomaly pattern of El Nio Modoki are well represented in the reanalysis. Furthermore, using this new ocean reanalysis, we select two strong cases to investigate possible mechanisms that may lead to the different warm SST anomaly patterns.
语种: 英语
WOS记录号: WOS:000308345600003
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.scsio.ac.cn/handle/344004/10127
Appears in Collections:热带海洋环境国家重点实验室(LTO)_期刊论文

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Recommended Citation:
Wang, DX; Qin, YH; Xiao, XJ; Zhang, ZQ; Wu, XY.El Nino and El Nino Modoki variability based on a new ocean reanalysis,OCEAN DYNAMICS,2012,62(9):1311-1322
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