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
发表期刊JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS
ISSN2169-9275
卷号123期号:9页码:6766-6778
摘要Plain 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.
文章类型Article
关键词Coastal Upwelling Interannual Variability Northern South China Sea
WOS标题词Science & Technology ; Physical Sciences
DOI10.1029/2018JC014223
收录类别SCI
资助者Key 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)
语种英语
关键词[WOS]TAIWAN STRAIT ; SATELLITE
WOS研究方向Oceanography
WOS类目Oceanography
WOS记录号WOS:000447552600043
出版者AMER GEOPHYSICAL UNION
引用统计
文献类型期刊论文
条目标识符http://ir.idsse.ac.cn/handle/183446/6314
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Feng, Ming; Yao, Jinglong
作者单位1.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
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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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