THE VARIATION OF THE HEAT SOURCES IN EAST CHINA IN THE EARLY SUMMER OF 1984 AND THEIR EFFECTS ON THE LARGE-SCALE CIRCULATION IN EAST ASIA

被引：6

作者：

丁一汇

胡坚

机构：

[1] Academy of Meteorological Sciences

[2] State Meteorological Administration

[3] Beijing

[4] Institute of Typhoon of Shanghai

[5] SMA

来源：

AdvancesinAtmosphericSciences | 1988年 / 02期

关键词：

THE VARIATION OF THE HEAT SOURCES IN EAST CHINA IN THE EARLY SUMMER OF 1984 AND THEIR EFFECTS ON THE LARGE-SCALE CIRCULATION IN EAST ASIA; EAST; heat;

D O I：

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中图分类号：

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摘要：

<正> The distributions and daily variations of the apparent heat source (Q1 ) and the apparent moisture sink (Q2 ) in East China in the early summer of 1984 have been estimated with the budget calculation method. It has been found that during this time period, there occurred three significant episodes of strong heating that corresponded to the three events of heavy rainfalls prior to, during and post to the onset of mei-yu (plum rains). The peaks of Q1 were generally found at 200 hPa, with the heating rate of 6°-10℃/day observed, while the peaks of Q2 were located at about 700 hPa, with their magnitudes being 12°-20℃/day. The vertical distribution of Q1 and Q2 indicates the importance of eddy vertical flux. In other words, the convective activity plays a very important role in the processes of precipitation in East Asia in the early summer. This result is different from the finding obtained by Luo and Yanai (1984) in their calculation of the case of 1979. They pointed out that in the early summer of 1979

引用

页码：171 / 180

页数：10

共 4 条

[1]

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[2]

Ding (1981) , Observational evidence of the influence of the Qinghai-Xizang (Tibet) Plateau on the occurrence of heavy rain and severe convective storms in China. Tao,S.Y. and Y.H. Bull. Amer, Meteor. Soc .

[3]

Yanai, (1984) , The large-scale circulation and heat sources over the Tibetan Plateau and surrounding areas during the early summer of 1979, Part Ⅱ: Heat and moisture budgets. Luo,H.B. and M. Monthly Weather Review .

[4]

Qian, (1982) , Numerical simulation of the development of mean monsoon circulation in July. Kuo,H.L. and Y.F. Monthly Weather Review .

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