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《Meteorology and Disaster Reduction Research》 2018-02
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Analysis of Spatial and Temporal Distribution Characteristics of Short-Duration Heavy Rain in Jiangxi Province during 2007-2015

Shao Mingyang;Yin Jianmin;Liu Xianyao;Jiujiang Meteorological Observatory;Jiangxi Meteorological Observatory;  
Based on the 2007—2015 precipitation observation data of 1 895 surface weather stations in Jiangxi province,the interannual variability,seasonal variation,daily variation and spatial distribution of different short-duration heavy rains(1 h precipitation≥20 mm,30 mm≤1 h precipitation50 mm,1 h precipitation≥50 mm,3 h precipitation≥50 mm,and 6 h precipitation≥50 mm)were statistically analyzed.The results are as follows:1)From the inter-decadal perspective,the number of days of short-duration heavy rainfall in Jiangxi with 1 h precipitation≥20 mm increased in recent years.2)The short-duration heavy rain in Jiangxi mainly occurred from April to September,of which the highest number of short-duration heavy rain days occurred in June,the lowest in January,February and December.From May to August,over 80% of the stations experienced a short-duration heavy rainfall.3)The short-duration heavy rain was likely to occur during the evening to the middle night,with the main peak from17 to 21 pm,and the sub-peak from8 to 9 am.4)The daily number of short-duration heavy rain in Jiangxi was characterized by the spatial distribution of"more east and less west".The number of precipitation days in Jiujiangis relatively small,and there are more in Fuzhou and Yingtan.
【Fund】: 2015年江西省重点项目(编号:20152ACG70002);; 2016年江西省预报员专项“台风‘苏迪罗’影响下赣北暴雨成因分析”
【CateGory Index】: P426.6
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