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DOI | 10.1007/s00382-021-05738-4 |
Impact of the April–May SAM on Central Pacific Ocean sea temperature over the following three seasons | |
Liu T.; Li J.; Sun C.; Lian T.; Zhang Y. | |
发表日期 | 2021 |
ISSN | 0930-7575 |
起始页码 | 171 |
结束页码 | 201 |
英文摘要 | Although the impact of the extratropical Pacific signal on the El Niño–Southern Oscillation has attracted increasing concern, the impact of Southern Hemisphere Annular Mode (SAM)-related signals from outside the southern Pacific Basin on the equatorial sea temperature has received less attention. This study explores the lead correlation between the April–May (AM) SAM and central tropical Pacific sea temperature variability over the following three seasons. For the positive AM SAM case, the related simultaneous warm SST anomalies in the southeastern Indian Ocean favor significant regulation of vertical circulation in the Indian Ocean with anomalous ascending motion in the tropics. This can further enhance convection over the Marine Continent, which induces a significant horizontal Kelvin response and regulates the vertical Walker circulation. These two processes both result in the anomalous easterlies east of 130° E in the equatorial Pacific during AM. These easterly anomalies favor oceanic upwelling and eastward propagation of the cold water into the central Pacific. The cold water in turn amplifies the development of the easterly wind and further maintains the cold water into the boreal winter. The results presented here not only provide a possible link between extratropical climate variability in the Indian Ocean and climate variation in the equatorial Pacific, but also shed new light on the short-term prediction of tropical central Pacific sea temperature. © 2021, The Author(s). |
英文关键词 | Air–sea interaction; Central Pacific Ocean; Southern Annular Mode |
来源期刊 | Climate Dynamics
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文献类型 | 期刊论文 |
条目标识符 | http://gcip.llas.ac.cn/handle/2XKMVOVA/183518 |
作者单位 | State Key Laboratory of Satellite Ocean Environment Dynamics, Second Institute of Oceanography, Ministry of Natural Resources, Hangzhou, China; Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Zhuhai, China; Frontiers Science Center for Deep Ocean Multispheres and Earth System (FDOMES), Key Laboratory of Physical Oceanography, Institute for Advanced Ocean Studies, Ocean University of China, Qingdao, 266100, China; Laboratory for Ocean Dynamics and Climate, Pilot Qingdao National Laboratory for Marine Science and Technology, Qingdao, China; College of Global Change and Earth System Science (GCESS), Beijing Normal University, Beijing, China; School of Oceanography, Shanghai Jiao Tong University, Shanghai, China |
推荐引用方式 GB/T 7714 | Liu T.,Li J.,Sun C.,等. Impact of the April–May SAM on Central Pacific Ocean sea temperature over the following three seasons[J],2021. |
APA | Liu T.,Li J.,Sun C.,Lian T.,&Zhang Y..(2021).Impact of the April–May SAM on Central Pacific Ocean sea temperature over the following three seasons.Climate Dynamics. |
MLA | Liu T.,et al."Impact of the April–May SAM on Central Pacific Ocean sea temperature over the following three seasons".Climate Dynamics (2021). |
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