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《Journal of Nanjing Institute of Meteorology》 2004-01
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Comparison of Two Computational Schemes of Mass Stream Function of Zonally Mean Meridional Circulation

GU Xing-jun,WANG Pan-xing,LI Li-ping (Department of Atmospheric Sciences,NIM,Nanjing210044,China)  
Mass stream functions(ψ) is a physical quantity describing mean meridional circulation(MMC) directly and quantitatively.Using the same grid data(1958—1998 NCEP/NCAR reanalysis data),this paper calculates ψ by using an iteration and superposition method respectively,and compares the differences and sameness of ψ in describing the MMC climatic state,anomalous MMC in the years of strong El Nino events and the double-layer structure of Hadley circulation.Results show that there is no apparent difference between them,however the superposition scheme only uses v-wind data and involves relatively simply computation.
【Fund】: 国家自然科学基金资助项目(40233037)
【CateGory Index】: P434
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