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《Acta Meteorologica Sinica》 1959-02
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CERTAIN COMPUTATIONAL RESULTS OF WATER VAPOUR TRANSPORT OVER EASTERN CHINA FOR A SELECTED SYNOPTIC CASE

HSlEH YI-PING(Peking Uni(?)ersity)TAI WU-jA(Central lnstitute of Meteorology,Central Weather Bureau)  
In this paper,the synoptic case of July 11—14,1957 is selected for computationof water vapour transport over Eastern China.During this period heavy precipitationhas caused flood over lower Yellow River area.The flux of water through the crosssections along the 105°and 120°meridians and 26°,31°,36°and 42°latitudesare computed.The triangle method,with side length of 200 kin,is used for thecomputation of convergence and divergence of water vapour Hux.The results arechecked with the observed precipitation distribution.It is found thai the accuracy ofcomputation is reasonable.Same computations are also conducted for daily situations.From these computations,it is seen that even if the wind velocity increasesrapidly with height in the troposphere,the water transport in the lower levels is Stillof much more importance.It shows also that the land is a source of water vapour forthe atmosphere.
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