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学科主题: Meteorology & Atmospheric Sciences
题名: Weakening of the Kuroshio Intrusion into the South China Sea over the Past Two Decades
作者: [Nan, Feng ; Yu, Fei] Chinese Acad Sci, Key Lab Ocean Circulat & Wave Studies, Inst Oceanol, Qingdao, Peoples R China ; [Nan, Feng ; Shi, Maochong ; Guo, Peifang] Ocean Univ China, Coll Phys & Environm Oceanog, Qingdao, Peoples R China ; [Nan, Feng ; Xue, Huijie ; Chai, Fei ; Xiu, Peng] Univ Maine, Sch Marine Sci, Orono, ME 04469 USA ; [Wang, Dongxiao] Chinese Acad Sci, Key Lab Trop Marine Environm Dynam, South China Sea Inst Oceanol, Guangzhou, Guangdong, Peoples R China
通讯作者: hxue@maine.edu
关键词: Boundary currents ; Channel flows ; Eddies ; Mesoscale processes ; Ocean circulation ; Ocean dynamics
刊名: JOURNAL OF CLIMATE
发表日期: 2013
卷: 26, 期:20, 页:8097-8110
部门归属: LTO
资助者: The altimeter products were produced by Ssalto/Duacs and distributed by Aviso, with support from CNES (www.aviso.oceanobs.com/duacs/). The 1/4 degrees gridded blended wind data were downloaded online (www.ncdc.noaa.gov/oa/rsad/air-sea/seawinds.html). Daily SST data at a resolution of approximately 4 km are provided by NOAA NODC (www.nodc.noaa.gov/SatelliteData/pathfinder4km). Argo profile data are obtained from China Argo Real-time Data Center (www.argo.gov.cn/argo-eng/index.asp). The authors thank Jianping Xu from the Second Institute of Oceanography, State Oceanic Administration for the CTD data of SCSMEX in 1998 and the South China Sea Institute of Oceanology of Chinese Academy of Sciences for the CTD data from 2004 to 2007 from their open cruises in the South China Sea. This work was jointly supported by the National Basic Research Program of China (2011CB403500 and 2010CB950400) and the China Scholarship Council (File 2009633044)
摘要: Inferred from the satellite and in situ hydrographic data from the 1990s and 2000s, the Kuroshio intrusion into the South China Sea (SCS) had a weakening trend over the past two decades. Associated with the weakened Kuroshio intrusion, the Kuroshio loop and eddy activity southwest of Taiwan became weaker, whereas the water above the salinity minimum became less saline in the northern SCS. The sea surface height southwest of Taiwan increased at a slower rate compared to other regions of the SCS because of the weakened Kuroshio intrusion. Simulations using the Regional Ocean Modeling System (ROMS) Pacific model show that the strength of the Kuroshio intrusion into the SCS decreased from 1993 to 2010 with a negative trend, -0.24 sverdrups (Sv) yr(-1) (1 Sv 10(6) m(3) s(-1)), in the total Luzon Strait transport (LST). Although wind-induced Ekman transport through the Luzon Strait became weaker, the magnitude at 0.001 Sv yr(-1) was too small to compensate for the negative trend of the LST. On the other hand, the piling up of the water induced by monsoon winds was an important mechanism for changing the pressure gradient across the Luzon Strait and eventually affecting the LST. The sea level gradient between the western Pacific and the SCS had a negative trend, -0.10 cm yr(-1), corresponding to a negative trend in the geostrophic transport at -0.20 Sv yr(-1). The Kuroshio transport east of Luzon Island also had a negative trend, which might also be linked to the weakening Kuroshio intrusion.
语种: 英语
原文出处: 查看原文
WOS记录号: WOS:000325269800022
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.scsio.ac.cn/handle/344004/10879
Appears in Collections:热带海洋环境国家重点实验室(LTO)_期刊论文

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Recommended Citation:
[Nan, Feng; Yu, Fei] Chinese Acad Sci, Key Lab Ocean Circulat & Wave Studies, Inst Oceanol, Qingdao, Peoples R China; [Nan, Feng; Shi, Maochong; Guo, Peifang] Ocean Univ China, Coll Phys & Environm Oceanog, Qingdao, Peoples R China; [Nan, Feng; Xue, Huijie; Chai, Fei; Xiu, Peng] Univ Maine, Sch Marine Sci, Orono, ME 04469 USA; [Wang, Dongxiao] Chinese Acad Sci, Key Lab Trop Marine Environm Dynam, South China Sea Inst Oceanol, Guangzhou, Guangdong, Peoples R China.Weakening of the Kuroshio Intrusion into the South China Sea over the Past Two Decades,JOURNAL OF CLIMATE,2013,26(20):8097-8110
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