Intensification and Dynamics of the Westward Equatorial Undercurrent During the Summers of 1998 and 2016 in the Indian Ocean
文献类型:期刊论文
作者 | Huang, Ke2,3,4; Wang, Dongxiao5,6; Chen, Gengxin2,4; Nagura, Motoki7; Han, Weiqing8; McPhaden, Michael J.9; Feng, Ming10; Chen, Ju2; Wu, Ying11; Zhang, Xiaolin12 |
刊名 | GEOPHYSICAL RESEARCH LETTERS |
出版日期 | 2022-10-28 |
卷号 | 49期号:20页码:11 |
ISSN号 | 0094-8276 |
关键词 | equatorial undercurrent tropical Indian Ocean equatorial dynamic Indian Ocean Dipole baroclinic waves equatorial waves |
DOI | 10.1029/2022GL100168 |
通讯作者 | Wang, Dongxiao ; Chen, Ju |
目次 | 否 |
英文摘要 | Using mooring observations and reanalysis, we show that anomalously strong westward Equatorial Undercurrent (wEUC) developed in June-July in 2016 and 1998 in the Indian Ocean, which coincided with extreme Indian Ocean Dipole (IOD) and El Nino events. Simulations show that equatorial Kelvin and Rossby waves were excited by winds associated with El Nino and positive IOD events during 2015 and 1997, and their negative phases during 2016 and 1998. The constructive relationship between the delayed-time contributions of eastern-boundary-reflected-waves that excited by the easterlies in 2015 and 1997 and the direct contributions of wind-forced-waves that excited by the westerlies in 2016 and 1998 resulted in the intensified wEUC. Slow intermediate-order baroclinic-modes, rather than fast low-order baroclinic-modes, dominated the strong wEUC. The eastern-boundary-reflected-waves dominated in 1997-1998 and directly wind-forced-waves dominated in 2015-2016. Our results emphasize the importance of constructive interactions of the directly-wind-forced and boundary-reflected waves in driving the interannual variability of Indian Ocean wEUC. |
WOS关键词 | WESTERN BOUNDARY REFLECTION ; SEA-LEVEL VARIATIONS ; INTERANNUAL VARIABILITY ; ZONAL CURRENTS ; SEASONAL CIRCULATION ; COASTAL CURRENT ; ROSSBY WAVES ; TIME-SCALE ; PACIFIC ; CLIMATE |
资助项目 | Second Tibetan Plateau Scientific Expedition and Research program[2019QZKK0102] ; Strategic Priority Research Program of Chinese Academy of Sciences[XDA20060502] ; Strategic Priority Research Program of Chinese Academy of Sciences[XDB42000000] ; National Natural Science foundation of China[41976016] ; National Natural Science foundation of China[42076021] ; National Natural Science foundation of China[42230402] ; National Natural Science foundation of China[42176026] ; National Natural Science foundation of China[41976024] ; National Natural Science foundation of China[41906147] ; National Natural Science foundation of China[42276022] ; National Natural Science foundation of China[41876017] ; Guangdong Basic and Applied Basic Research Foundation[2021A1515011534] ; Youth Innovation Promotion Association CAS[Y2021093] ; Joint Advanced Marine and Ecological Studies (JAMES) project of the Global Change and Air-Sea interaction II Program[GASI-04-WLHY-03] ; State Key Laboratory of Tropical Oceanography[LTOZZ2002] ; State Key Laboratory of Tropical Oceanography[LTOZZ2101] ; State Key Laboratory of Satellite Ocean Environment Dynamics, SIO, MNR[QNHX2203] ; China-Sri Lanka Joint Center for Education & Research, Chinese Academy of Sciences ; High-Performance Computing Division |
WOS研究方向 | Geology |
语种 | 英语 |
出版者 | AMER GEOPHYSICAL UNION |
WOS记录号 | WOS:000871467400001 |
资助机构 | Second Tibetan Plateau Scientific Expedition and Research program ; Strategic Priority Research Program of Chinese Academy of Sciences ; National Natural Science foundation of China ; Guangdong Basic and Applied Basic Research Foundation ; Youth Innovation Promotion Association CAS ; Joint Advanced Marine and Ecological Studies (JAMES) project of the Global Change and Air-Sea interaction II Program ; State Key Laboratory of Tropical Oceanography ; State Key Laboratory of Satellite Ocean Environment Dynamics, SIO, MNR ; China-Sri Lanka Joint Center for Education & Research, Chinese Academy of Sciences ; High-Performance Computing Division |
源URL | [http://ir.idsse.ac.cn/handle/183446/9786] |
专题 | 深海科学研究部_海洋环流观测与数值模拟研究室 |
通讯作者 | Wang, Dongxiao; Chen, Ju |
作者单位 | 1.Chinese Acad Sci, Inst Deep Sea Sci & Engn, Sanya, Peoples R China 2.South China Sea Inst Oceanol, State Key Lab Trop Oceanog, Guangzhou, Peoples R China 3.Minist Nat Resources, State Key Lab Satellite Ocean Environm Dynam, Inst Oceanog 2, Hangzhou, Peoples R China 4.Southern Marine Sci & Engn Guangdong Lab Guangzho, Guangzhou, Peoples R China 5.Sun Yat Sen Univ, Sch Marine Sci, Zhuhai, Peoples R China 6.Southern Marine Sci & Engn Guangdong Lab Zhuhai, Zhuhai, Peoples R China 7.Japan Agcy Marine Earth Sci & Technol, Yokosuka, Kanagawa, Japan 8.Univ Colorado, Dept Atmospher & Ocean Sci, Boulder, CO 80309 USA 9.NOAA, Pacific Marine Environm Lab, 7600 Sand Point Way Ne, Seattle, WA 98115 USA 10.CSIRO Oceans & Atmosphere, Crawley, WA, Australia |
推荐引用方式 GB/T 7714 | Huang, Ke,Wang, Dongxiao,Chen, Gengxin,et al. Intensification and Dynamics of the Westward Equatorial Undercurrent During the Summers of 1998 and 2016 in the Indian Ocean[J]. GEOPHYSICAL RESEARCH LETTERS,2022,49(20):11. |
APA | Huang, Ke.,Wang, Dongxiao.,Chen, Gengxin.,Nagura, Motoki.,Han, Weiqing.,...&Zhou, Feng.(2022).Intensification and Dynamics of the Westward Equatorial Undercurrent During the Summers of 1998 and 2016 in the Indian Ocean.GEOPHYSICAL RESEARCH LETTERS,49(20),11. |
MLA | Huang, Ke,et al."Intensification and Dynamics of the Westward Equatorial Undercurrent During the Summers of 1998 and 2016 in the Indian Ocean".GEOPHYSICAL RESEARCH LETTERS 49.20(2022):11. |
入库方式: OAI收割
来源:深海科学与工程研究所
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