RESOURCES AND ENVIRONMENT IN THE YANGTZE BASIN >> 2016, Vol. 25 >> Issue (05): 837-844.doi: 10.11870/cjlyzyyhj201605018

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THE DISCRIMINATION AND ANALYSIS OF THERMAL CONVECTIVE SHORT-DURATION HEAVY PRECIPITATION IN THE YANGZE-HUAIHE RIVER BASIN

ZHAI Jing1,2, LIU Hui-juan3, HUANG Yong1,2, QIU Xue-xing3, HUO Yan-feng1,2   

  1. 1. Anhui Institute of Meteorological Science, Anhui Hefei 230031, China;
    2. Anhui Key Lab of Atmosphere Science & Satellite Remote Sensing, Hefei 230031, China;
    3. Anhui Meteorological Observatory, Hefei 230031, China
  • Received:2015-09-06 Revised:2016-01-13 Online:2016-05-20
  • Supported by:
    Nature science foundation of Anhui province(1408085MK160);Natural science foundation of china (41105098)

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Abstract: A method of discriminating thermal convective short-duration heavy precipitation was developed, based on the characteristic of ground temperature, sunshine duration, precipitation, according to the statistical analysis on factors such as precipitation and temperature, ground temperature, sunshine duration, during May-Aug from 2008 to 2012 in Anhui Province. Frequency of thermal convective short-duration heavy precipitation was significantly higher than other times. The characteristics of specific humidity, radar echo, stability and energy indexes in thermal convective short-duration heavy precipitation in Anhui province was analyzed based on the Statistic of LAPS (Local Analysis Prediction System) data. A typical case was analyzed about the mechanism and characteristics of precipitation. Finally, the characteristics of thermal convective short-duration heavy precipitation was summarized:The maintenance time of rain is short, the rainfall is heavy, the range is small, with high ground temperature, the difference between the ground temperature of afternoon and morning is big, and the instability index value before precipitation is high, but the low-level wind convergence and shear is significant.

Key words: thermal convective, short-duration heavy precipitation, LAPS data

CLC Number: 

  • P467
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