Satellite and Argo Observed Surface Salinity Variations in the Tropical Indian Ocean and Their Association with the Indian Ocean Dipole Mode
Du, Yan; Zhang, Yuhong; duyan@scsio.ac.cn
2015
发表期刊JOURNAL OF CLIMATE
卷号28期号:2页码:695-713
文章类型0894-8755
摘要This study investigates sea surface salinity (SSS) variations in the tropical Indian Ocean (IO) using the Aquarius/Satelite de Aplicaciones Cientificas-D (SAC-D) and the Soil Moisture and Ocean Salinity (SMOS) satellite data and the Argo observations during July 2010-July 2014. Compared to the Argo observations, the satellite datasets generally provide SSS maps with higher space-time resolution, particularly in the regions where Argo floats are sparse. Both Aquarius and SMOS well captured the SSS variations associated with the Indian Ocean dipole (IOD) mode. Significant SSS changes occurred in the central equatorial IO, along the Java-Sumatra coast, and south of the equatorial IO, due to ocean circulation variations. During the negative IOD events in 2010, 2013, and 2014, westerly wind anomalies strengthened along the equator, weakening coastal upwelling off Java and Sumatra and decreasing SSS. South of the equatorial IO, an anomalous cyclonic gyre changed the tropical circulation, which favored the eastward high-salinity tongue along the equator and the westward low-saline tongue in the south. An upwelling Rossby wave favored the increase of SSS farther to the south. During the positive IOD events in 2011 and 2012, the above-mentioned processes reversed, although the decrease of SSS was weaker in magnitude.
部门归属[Du, Yan; Zhang, Yuhong] Chinese Acad Sci, South China Sea Inst Oceanol, State Key Lab Trop Oceanog, Guangzhou, Guangdong, Peoples R China; [Zhang, Yuhong] Univ Chinese Acad Sci, Beijing, Peoples R China ; LTO
学科领域Meteorology & Atmospheric Sciences
文献类型期刊论文
条目标识符http://ir.scsio.ac.cn/handle/344004/15130
专题热带海洋环境国家重点实验室(LTO)
通讯作者duyan@scsio.ac.cn
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Du, Yan,Zhang, Yuhong,duyan@scsio.ac.cn. Satellite and Argo Observed Surface Salinity Variations in the Tropical Indian Ocean and Their Association with the Indian Ocean Dipole Mode[J]. JOURNAL OF CLIMATE,2015,28(2):695-713.
APA Du, Yan,Zhang, Yuhong,&duyan@scsio.ac.cn.(2015).Satellite and Argo Observed Surface Salinity Variations in the Tropical Indian Ocean and Their Association with the Indian Ocean Dipole Mode.JOURNAL OF CLIMATE,28(2),695-713.
MLA Du, Yan,et al."Satellite and Argo Observed Surface Salinity Variations in the Tropical Indian Ocean and Their Association with the Indian Ocean Dipole Mode".JOURNAL OF CLIMATE 28.2(2015):695-713.
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