Cite this paper:
ZHANG Xiaoshuang, WANG Xidong, CAO Yingzhi, ZHANG Lianxin, SHAO Caixia, SUN Chunjian, WU Xinrong, FU Hongli, XUAN Lili. Climate modulation on sea surface height in China seas[J]. Journal of Oceanology and Limnology, 2015, 33(5): 1245-1255

Climate modulation on sea surface height in China seas

ZHANG Xiaoshuang1, WANG Xidong1, CAO Yingzhi1, ZHANG Lianxin1,2, SHAO Caixia1,3, SUN Chunjian1, WU Xinrong1, FU Hongli1, XUAN Lili1
1 Key Laboratory of Marine Environmental Information Technology, SOA, National Marine Data and Information Service, Tianjin 300171, China;
2 College of Physical and Environmental Oceanography, Ocean University of China, Qingdao 266100, China;
3 National University of Defense Technology, Changsha 410073, China
Abstract:
The climate modulation on the sea surface height (SSH) in China seas is investigated using a China Ocean Reanalysis (CORA) dataset from 1958-2008.The dataset is constructed by assimilating the temperature/salinity profiles derived from the satellite altimetry data and historical observational temperature/salinity profiles.Based on the Empirical Orthogonal Function (EOF), the CORA sea surface height anomaly (SSHa) is decomposed, and the interannual and decadal variability of the first three leading modes are analyzed.On the interannual timescale, the first principal component (PC1) is significant positively correlated with the El Niño/Southern Oscillation (ENSO).On the decadal timescale, North Pacific Gyre Oscillation (NPGO) has significant negative correlation with PC1 whereas Pacific Decadal Oscillation (PDO) is in phase with PC3.Analysis shows that the decadal variability of SSH is mainly modulated by the wind stress curl variability related to the NPGO and PDO.In addition, the effect of net heat flux associated to the NPGO and PDO on SSH is also investigated, with net heat flux variability in the Luzon strait and tropic Pacific found to influence the decadal variability of SSH.
Key words:    sea surface height|El Niñ    o/Southern Oscillation|North Pacific Gyre Oscillation|Pacific Decadal Oscillation   
Received: 2014-06-16   Revised: 2014-07-25
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Articles by ZHANG Xiaoshuang
Articles by WANG Xidong
Articles by CAO Yingzhi
Articles by ZHANG Lianxin
Articles by SHAO Caixia
Articles by SUN Chunjian
Articles by WU Xinrong
Articles by FU Hongli
Articles by XUAN Lili
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