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Effects of monsoon onset vortex on heat budget in the mixed layer of the Bay of Bengal
Xu Kang1,2,3; Liu Boqi4,5; Liu Yu6,7; Wang Weiqiang1,2,8; He Zhuoqi1,2,9
2019-11-27
Source PublicationJOURNAL OF OCEANOLOGY AND LIMNOLOGY
ISSN2096-5508
Volume1Issue:1Pages:16
Abstract

We investigated the effects of monsoon onset vortex (MOV) on the mixed layer heat budget in the Bay of Bengal (BOB) in spring 2003 using the reanalysis datasets. The results suggest that the solar radiation flux penetrating the mixed layer and the existence of barrier layer are both able to modulate the effects of MOV on the evolution of sea surface temperature (SST) in the BOB. Prior to the formation of BOB MOV, the local SST raised quickly due to mass of solar radiation reaching the sea surface under the clear-sky condition. Meanwhile, since the mixed layer was shallow before the onset of the Asian summer monsoon (ASM), some solar radiation flux could penetrate to directly heat the deeper water, which partly offset the warming effect of shortwave radiation. On the other hand, the in-situ SST started to cool due to the upwelling of cold water when the MOV generated over the BOB, along with the rapidly increased surface wind speed and its resultant deeper mixed layer. As the MOV developed and moved northward, the SST tended to decrease remarkably because of the strong upward surface latent heat flux over the BOB ascribed to the wind-evaporation mechanism. However, the MOV-related precipitation brought more fresh water into the upper ocean to produce a thicker barrier layer, whose thermal barrier effect damped the cooling effect of entrainment upwelling on the decrease tendency of the BOB SST. In other words, the thermal barrier effect could slow down the decreasing trend of the BOB SST even after the onset of ASM, which facilitated the further enhancement of the MOV.

Keywordmonsoon onset vortex (MOV) Bay of Bengal air-sea interaction mixed layer depth barrier layer thickness heat budget analysis
DOI10.1007/s00343-019-9061-5
Indexed BySCI
Funding OrganizationStrategic Priority Research Program of Chinese Academy of Sciences ; Key Special Project for Introduced Talents Team of Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou) ; National Natural Science Foundation of China ; Rising Star Foundation of the South China Sea Institute of Oceanology ; Innovation Academy of South China Sea Ecology and Environmental Engineering, Chinese Academy of Sciences ; Independent Research Project Program of State Key Laboratory of Tropical Oceanography ; Basic Scientific Research and Operation Foundation of the CAMS
Language英语
Funding ProjectStrategic Priority Research Program of Chinese Academy of Sciences[XDA20060502] ; Key Special Project for Introduced Talents Team of Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou)[GML2019ZD0306] ; National Natural Science Foundation of China[41776023] ; National Natural Science Foundation of China[41731173] ; National Natural Science Foundation of China[41521005] ; National Natural Science Foundation of China[41676013] ; National Natural Science Foundation of China[41775052] ; National Natural Science Foundation of China[41506003] ; Rising Star Foundation of the South China Sea Institute of Oceanology[NHXX2018WL0201] ; Innovation Academy of South China Sea Ecology and Environmental Engineering, Chinese Academy of Sciences[ISEE2018PY06] ; Independent Research Project Program of State Key Laboratory of Tropical Oceanography[LTOZZ1802] ; Basic Scientific Research and Operation Foundation of the CAMS[2018Z006] ; Basic Scientific Research and Operation Foundation of the CAMS[2017R001]
WOS KeywordASIAN SUMMER MONSOON ; INTERANNUAL VARIABILITY ; BARRIER-LAYER ; ARABIAN SEA ; SOLAR-RADIATION ; INDIAN-OCEAN ; MODEL ; TRANSITION ; GENESIS ; IMPACT
WOS Research AreaMarine & Freshwater Biology ; Oceanography
WOS SubjectLimnology ; Oceanography
WOS IDWOS:000500379800005
PublisherSCIENCE PRESS
Citation statistics
Document Type期刊论文
Version出版稿
Identifierhttp://ir.idsse.ac.cn/handle/183446/7339
Collection深海科学研究部_海洋环流观测与数值模拟研究室
Corresponding AuthorXu Kang
Affiliation1.Chinese Acad Sci, State Key Lab Trop Oceanog, South China Sea Inst Oceanol, Guangzhou 510301, Guangdong, Peoples R China
2.Southern Marine Sci & Engn Guangdong Lab Guangzho, Guangzhou 511458, Guangdong, Peoples R China
3.Chinese Acad Sci, Innovat Acad South China Sea Ecol & Environm Engn, Guangzhou 510301, Guangdong, Peoples R China
4.Chinese Acad Meteorol Sci, State Key Lab Severe Weather, Beijing 100081, Peoples R China
5.Chinese Acad Meteorol Sci, Inst Climate Syst, Beijing 100081, Peoples R China
6.Chinese Acad Sci, Inst Deep Sea Sci & Engn, Sanya 572000, Peoples R China
7.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
8.Qingdao Natl Lab Marine Sci & Technol, Lab Reg Oceanog & Numer Modeling, Qingdao 266071, Shandong, Peoples R China
9.Chinese Acad Sci, State Key Lab Numer Modeling Atmospher Sci & Geop, Inst Atmospher Phys, Beijing 100029, Peoples R China
Recommended Citation
GB/T 7714
Xu Kang,Liu Boqi,Liu Yu,et al. Effects of monsoon onset vortex on heat budget in the mixed layer of the Bay of Bengal[J]. JOURNAL OF OCEANOLOGY AND LIMNOLOGY,2019,1(1):16.
APA Xu Kang,Liu Boqi,Liu Yu,Wang Weiqiang,&He Zhuoqi.(2019).Effects of monsoon onset vortex on heat budget in the mixed layer of the Bay of Bengal.JOURNAL OF OCEANOLOGY AND LIMNOLOGY,1(1),16.
MLA Xu Kang,et al."Effects of monsoon onset vortex on heat budget in the mixed layer of the Bay of Bengal".JOURNAL OF OCEANOLOGY AND LIMNOLOGY 1.1(2019):16.
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