IDSSE OpenIR  > 深海科学研究部  > 海洋环流观测与数值模拟研究室
The Contribution of Local Wind and Ocean Circulation to the Interannual Variability in Coastal Upwelling Intensity in the Northern South China Sea
Shu, Yeqiang1; Wang, Dongxiao1,2; Feng, Ming3; Geng, Binxu1; Chen, Ju1; Yao, Jinglong1; Xie, Qiang1,4; Liu, Qin-Yan1
2018-09-01
Source PublicationJOURNAL OF GEOPHYSICAL RESEARCH-OCEANS
ISSN2169-9275
Volume123Issue:9Pages:6766-6778
AbstractPlain Language Summary Using in situ data, satellite observations, and model outputs, we analyzed the interannual variability in coastal upwelling intensity in the northern South China Sea. Comparing coastal upwelling observed from three cruises during the summers of 2008 and 2016, we found that coastal upwelling was stronger during 2016 compared to 2008, although the local upwelling favorable wind was stronger in 2008. The stronger near-bottom cross-shelf current and shallower thermocline in the slope resulted in stronger upwelling intensity during the summer of 2016. The topographic position index (TPI), which is defined by the sea surface temperature difference between one center cell and its neighbors, was used to quantify the interannual variability in upwelling. Stronger (weaker) upwelling intensity occurred during the summers of 2007, 2008, 2011, 2015, and 2016 (2004, 2009, 2012, and 2014) when the local wind was more favorable (less favorable) to coastal upwelling. The correlation coefficient between the area-weighted TPI and alongshore wind speed was -0.60, thereby confirming that local wind is the primary dynamical factor controlling the interannual variability in upwelling intensity. The correlation coefficient between the area-weighted TPI and the eastward boundary current transport averaged between the 75- and 100-m isobaths on the shelf was -0.42, indicating that the interannual variability in large-scale circulation in the northern South China Sea also contributes to the interannual variability in upwelling intensity. The anomalously shallow thermocline in the summer of 2016 was likely associated with the strong 2015-2016 El Nino event through planetary wave propagations.
SubtypeArticle
KeywordCoastal Upwelling Interannual Variability Northern South China Sea
WOS HeadingsScience & Technology ; Physical Sciences
DOI10.1029/2018JC014223
Indexed BySCI
Funding OrganizationKey Research Program of Frontier Sciences, Chinese Academy of Sciences (CAS)(QYZDJ-SSW-DQCO22) ; Strategic priority research program of CAS(XDA11020204) ; National Natural Science Foundation of China(41476012 ; Guangdong Natural Science Funds for Distinguished Young Scholar(2014A030306049) ; CAS/State Administration of Foreign Experts Affairs (SAFEA) International Partnership Program for Creative Research Teams ; National Key Scientific Instrument and Equipment Development Project(2012YQ12003910) ; 41521005 ; 41628601 ; 41576012)
Language英语
WOS KeywordTAIWAN STRAIT ; SATELLITE
WOS Research AreaOceanography
WOS SubjectOceanography
WOS IDWOS:000447552600043
PublisherAMER GEOPHYSICAL UNION
Citation statistics
Document Type期刊论文
Identifierhttp://ir.idsse.ac.cn/handle/183446/6314
Collection深海科学研究部_海洋环流观测与数值模拟研究室
Corresponding AuthorFeng, Ming; Yao, Jinglong
Affiliation1.Chinese Acad Sci, South China Sea Inst Oceanol, State Key Lab Trop Oceanog, Guangzhou, Guangdong, Peoples R China
2.Sun Yat Sen Univ, Sch Marine Sci, Guangzhou, Guangdong, Peoples R China
3.CSIRO, Indian Ocean Marine Res Ctr, Crawley, WA, Australia
4.Chinese Acad Sci, Inst Deep Sea Sci & Engn, Sanya, Peoples R China
Recommended Citation
GB/T 7714
Shu, Yeqiang,Wang, Dongxiao,Feng, Ming,et al. The Contribution of Local Wind and Ocean Circulation to the Interannual Variability in Coastal Upwelling Intensity in the Northern South China Sea[J]. JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS,2018,123(9):6766-6778.
APA Shu, Yeqiang.,Wang, Dongxiao.,Feng, Ming.,Geng, Binxu.,Chen, Ju.,...&Liu, Qin-Yan.(2018).The Contribution of Local Wind and Ocean Circulation to the Interannual Variability in Coastal Upwelling Intensity in the Northern South China Sea.JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS,123(9),6766-6778.
MLA Shu, Yeqiang,et al."The Contribution of Local Wind and Ocean Circulation to the Interannual Variability in Coastal Upwelling Intensity in the Northern South China Sea".JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS 123.9(2018):6766-6778.
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