Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1002/2017GL076003 |
Low-Frequency Variability and the Unusual Indian Ocean Dipole Events in 2015 and 2016 | |
Zhang, Lianyi1,2; Du, Yan1,2; Cai, Wenju3,4,5 | |
2018-01-28 | |
发表期刊 | GEOPHYSICAL RESEARCH LETTERS |
ISSN | 0094-8276 |
EISSN | 1944-8007 |
出版年 | 2018 |
卷号 | 45期号:2页码:1040-1048 |
文章类型 | Article |
语种 | 英语 |
国家 | Peoples R China; Australia |
英文摘要 | An unusual positive Indian Ocean Dipole (IOD) event occurred in 2015 associated with the 2015/2016 extreme El Nino. Unlike the canonical IOD, sea surface temperature (SST) warming in the west central tropical Indian Ocean (TIO) dominated the strong zonal SST gradient as cooling off Sumatra-Java was weak. Over the southeastern TIO, deeper thermocline has suppressed the upwelling cooling since 2012. Such deepened thermocline related to a low-frequency adjustment and curtailed cool anomalies in the 2015 positive IOD but favored warm anomalies in the 2016 negative IOD. Based on statistical analyses, ocean assimilation data confirm that an IOD-like pattern exists in the TIO on decadal timescale. During a negative decadal IOD-like phase, thermocline is deeper in the southeastern TIO; the thermocline-SST feedback is unfavorable for positive IOD occurrence and intensity, but conducive to negative IOD events. Thus, we propose that the 2015-2016 IOD events are modulated by the low-frequency variability of thermocline. |
英文关键词 | IOD thermocline low-frequency variability Indian Ocean mean state |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000425514300062 |
WOS关键词 | EL-NINO ; SURFACE-TEMPERATURE ; DECADAL VARIABILITY ; TROPICAL PACIFIC ; ZONAL MODE ; CLIMATE ; ENSO ; OSCILLATION ; REANALYSIS ; DYNAMICS |
WOS类目 | Geosciences, Multidisciplinary |
WOS研究方向 | Geology |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/29121 |
专题 | 气候变化 |
作者单位 | 1.Chinese Acad Sci, SCSIO, State Key Lab Trop Oceanog, Guangzhou, Guangdong, Peoples R China; 2.Univ Chinese Acad Sci, Coll Earth Sci, Beijing, Peoples R China; 3.CSIRO Marine & Atmospher Res, Aspendale, Vic, Australia; 4.Ocean Univ China, CIMSST, Phys Oceanog Lab, Qingdao, Peoples R China; 5.Qingdao Natl Lab Marine Sci & Technol, Qingdao, Peoples R China |
推荐引用方式 GB/T 7714 | Zhang, Lianyi,Du, Yan,Cai, Wenju. Low-Frequency Variability and the Unusual Indian Ocean Dipole Events in 2015 and 2016[J]. GEOPHYSICAL RESEARCH LETTERS,2018,45(2):1040-1048. |
APA | Zhang, Lianyi,Du, Yan,&Cai, Wenju.(2018).Low-Frequency Variability and the Unusual Indian Ocean Dipole Events in 2015 and 2016.GEOPHYSICAL RESEARCH LETTERS,45(2),1040-1048. |
MLA | Zhang, Lianyi,et al."Low-Frequency Variability and the Unusual Indian Ocean Dipole Events in 2015 and 2016".GEOPHYSICAL RESEARCH LETTERS 45.2(2018):1040-1048. |
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