ISSN 1002-1027  CN 11-2952/G2

Acta scientiarum naturalium Universitatis Pekinensis

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Echo Analysis of An Multiple Thunderstorms Process in Chengdu Shuangliu Airport

SHEN Hongbin1, TAO Zuyu1, ZHANG Yi2   

  1. 1National Laboratory for Severe Storm Research, School of Physics, Peking University, Beijing, 100871;2Rain-Making and Hail Prevention Office, Chengdu, 610041
  • Received:2002-03-28 Online:2003-01-20 Published:2003-01-20

Abstract: 23 thunderstorms occurred for twenty successive days from July to August, 2000. The weather situation are analyzed. Results show that they comprise 11 local heat thunderstorms and 12 systemic thunderstorms. The characteristic of the two kinds of thunderstorms echo have been analyzed and compared. It shows that there are obvious difference in their echo parameters、spatial and temporal distribution、original source、movement and evolution. The systemic thunderstorm are complex of organizational and systemic multiple cell. The life span of the thunderstorm consist of life span of every cell, so lifetime of them greatly longer than that of anyone convection cell. New cell is created and developed over confluence of cold downdraught and front warm current. The thunderstorms have been developed and maintained by means of this mechanism.