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2003年z2期
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A sea temperature data assimilation system for the China Seas and adjacent areas
A sea temperature data assimilation system for the China Seas and adjacent areas
摘要
A sea temperature data assimilation system for the China Seas and adjacent areas is developed based on a nested regional ocean circulation model and variational optimal interpolation assimilation method. A 12-year assimilation experiment is performed by using the observational temperature profiles from World Ocean Database 1998 (WOD98) and ECMWF reanalysis surface wind stress. Experimental results indicate that the variational scheme shows good skill in assimilating the observed sea temperature into a regional ocean circulation model. Compared with simulation alone, the sea temperature data assimilation significantly improves the performance of a regional ocean model and obtains comprehensive description of the circulations in the China Seas and adjacent areas. Assimilation results, such as the strength and flowing axis of the Kuroshio, Yellow Sea Cold Water Mass and its corresponding horizontal circulation in summer and dipole eddies in the South China Sea in the late summer/early autumn and the eastward jet between them, are well consistent with the observed evidences.
年，卷(期)：
2003, 48(z2)
分类号：
P7
在线出版日期：
2004年12月16日
基金项目：
40225015:国家自然科学基金KZCX1-SW-01-16:中国科学院知识创新工程重要方向项目40076009,40376039,40233033,40221503:国家自然科学基金G1999032801:国家发展基础科学项目，
