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学科主题: Oceanography
题名: Heat, salt and volume transports by eddies in the vicinity of the Luzon Strait
作者: Wang, XD ; Li, W ; Qi, YQ ; Han, GJ
通讯作者: winterwing2000@yahoo.com.cn
关键词: Meso-scale eddy ; Data assimilation ; Heat transport ; Kuroshio intrusion ; Luzon Strait
刊名: DEEP-SEA RESEARCH PART I-OCEANOGRAPHIC RESEARCH PAPERS
发表日期: 2012
卷: 61, 页:21-33
部门归属: [Wang, Xidong; Li, Wei; Han, Guijun] Natl Marine Data & Informat Serv, SOA, Key Lab Marine Environm Informat Technol, Tianjin 300171, Peoples R China; [Qi, Yiquan] Chinese Acad Sci, S China Sea Inst Oceanol, State Key Lab Trop Oceanog, Guangzhou 510301, Guangdong, Peoples R China
项目归属: LTO
摘要: The heat, salt and volume transports by oceanic meso-scale eddies generated near the Luzon Strait and moving into the South China Sea (SCS) are estimated by combining satellite altimetry and sea surface temperature (SST) data with hydrographic data. By establishing a statistical relationship among steric height, SST and subsurface temperature, together with a multi-grid 3D-Var assimilation method, an eddy-resolving temperature/salinity dataset from 1993 to 2008 is reconstructed from the altimetry sea surface height (SSH) anomaly, remote sensing SST and historical temperature/salinity profiles in the SCS. Using two cases of eddies in the reconstructed temperature/salinity dataset, we show that a cyclonic eddy can carry negative heat anomaly with -6.7 +/- 2.5 x 10(18)J, which contributes to the heat balance of the region where it travels through, and freshwater of 0.0005 +/- 0.0002 Sv into the SCS, and that an anti-cyclonic eddy can transport positive heat anomaly with 4.6 +/- 1.8 x 10(18)J, which might have affected the inteannual variation of heat in the upper layer of the SCS and bring freshwater of 0.0004 +/- 0.0001 Sv into the SCS on top of the 26.5 sigma(0) isopycnal surface. The 16-year averaged heat, salt and volume transports by meso-scale eddies near the Luzon Strait are estimated as 0.00003 +/- 0.00001 PW, 0.004 +/- 0.001 x 10(6)kgs(-1) and 0.3 Sv into the SCS on top of the 25.0 sigma(0) isopycnal surface. During the 16-year period, these transports show significant interannual variations. Generally, the heat transport is positive during summers of El Nino, while it is negative or weakly positive during summers of La Nina. Crown Copyright (C) 2011 Published by Elsevier Ltd. All rights reserved.
语种: 英语
WOS记录号: WOS:000301888000003
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.scsio.ac.cn/handle/344004/10207
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:
Wang, XD; Li, W; Qi, YQ; Han, GJ.Heat, salt and volume transports by eddies in the vicinity of the Luzon Strait,DEEP-SEA RESEARCH PART I-OCEANOGRAPHIC RESEARCH PAPERS,2012,61():21-33
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