ISSN 1000-0526
CN 11-2282/P

Volume 16,Issue 1,1990 Table of Contents

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  • 1  A review of studies on East Asia winter monsoon in China
    朱乾根
    1990, 16(1):3-10. DOI: 10.7519/j.issn.1000-0526.1990.1.001
    [Abstract](621) [HTML](0) [PDF 928.91 K](597)
    Abstract:
    A general review is given here to the studies on eastern Asian winter monsoon and its associated Southern Hemisphere Summer monsoon by Chinese meteorologist in last several years.In the studies,numerious investigations have been made in various areas, such as the equatorward propagation of the eastern -Asian cold surges, cold surge-caused interactions between low-and mid-latitude circulations , characteristics of the low-frequency oscillation of winter monsoon , and the ralationship between the monsoon and El Nino events, etc. The efforts have almost touched the- whole frontier of monsoon studies on earth.The results show that the studies in China have obtained the same or almost the same with those of the world. Yet, the review indicates that there are some topics and fields remain to be further examined.
    2  Analysis of the general characteristics and genesis conditions of tornado in front of typhoon
    沈树勤
    1990, 16(1):11-15. DOI: 10.7519/j.issn.1000-0526.1990.1.002
    [Abstract](926) [HTML](0) [PDF 543.56 K](715)
    Abstract:
    Weather events show that severe convective activities usually appear in front of a.typhoon which frequently initiate severe thunderstorms and tornadoes. Analyses on the processes of tornadoes in front of typhoons taking place in Jiangsu Province from 1962 to 1984 show that a tornado is forming in certain position where is always along the right-front side in the direction of the typhoon movement , and associated with the typhoon intensity and other factors.In this paper we also analyse the genesis factors of the tornado in front of a typhoon by means of meso-scaieverticity equation, We oint pout that the. slopes( grad w ) in vorticityequation is one of the important conditions of the tornado cyclone's genesis in severe convective clouds in front of a typhoon.
    3  Measurefflents of areal rainfall by a C-band digitized weather radar
    薛震刚 徐宝祥 张鸿发
    1990, 16(1):16-21. DOI: 10.7519/j.issn.1000-0526.1990.1.003
    [Abstract](394) [HTML](0) [PDF 514.94 K](585)
    Abstract:
    The accuracy of measuring rainfall by radar and represen tatiness of raingauge in various precipitation type are discussed, using the 713 digitized weather radar data and high-density raingauge data.The statistical parameters of radar measurements for, type-observing of precipitation system are also discussed. The results can be used as a reference to the meteorological and hydrological departments for their operations.

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