中国东部地区夏季水汽输送个例计算
CERTAIN COMPUTATIONAL RESULTS OF WATER VAPOUR TRANSPORT OVER EASTERN CHINA FOR A SELECTED SYNOPTIC CASE
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摘要: 本文根据实测风与温度记录计算了1957年7月11日到20日黄河中下游地区大量降水的水汽输送情况,并简单讨论水汽循环问题.Abstract: In this paper, the synoptic case of July 11-14, 1957 is selected for computation. of water vapour transport ovor Eastern China.Dwring tliis period heavy precipitation has causod flcod ov er lower Yollow River area,. Tho flux of wator through the cross sections along the 105° and 120° meridians and 26°, 31°, 36° and 42° latiirudes are computed. The triangle method,with side length of 200 krn, is used for the computation of convergence and divergence of water vapour flux. The results are checked with the observed precipitation distribution. It is found that the accuracy of computation is reasonable.Same computations are also conduct.cd for daily situations. From theca computations, it is lean that even if the tvind velocity incraases rapidly with haight in the troposphere, the vator transport in the Iotvar levels is still of much more importance. It shows also that the land is a source of water vapour for the atmosphare.
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杨鉴初:运用气象要素历史演变的规律性作一年以上的是期予告.气象学报24(1953),100-117. Montgomery,R.B.,Report on the work of G.T.Walker.Monthly Weather Rrwiew,Supplement No.39(1940),1-24.
中央气象局气象科学研究所天气研究室与北京大学天气学教研室:大气环流的季节变化与中国夏季降水,中央气象局中是期予报文集(1950). Smagorinsky,J.and Callins,G.O.,On the numerical prediction of precipitation.Monthly Weather Review,83(1955),53-68.
章淹:中国地区大范圆定量降水数值予告圆解法的试验,气象学报29(1958),7-15. Byers,H.R.and Braham,R.R,The thuuiersiorm,Washington,D.C.,p.232(1949).
Benton,G.S.and Estoque,M.A.,Water vapour transfer over north American Continent,Jaur.Meteor 11(1954),462-477.
徐淑英:我国水汽翰送和平衡,气象学报29(1908),33-43. 谢义炳,曹庆存:盛夏亚洲及西太平洋大型天气与中国降水,中央气象局气象论文集,第3号(1957).
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