江西省夏季降水效率特征  

Characteristic of Precipitation Efficiency in Summer in Jiangxi Province

作　　者：李玉林 杨梅[2] 曾光平[3] 

机构地区：[1]江西省人工影响天气办公室 [2]江西省气象台,南昌330046 [3]福建省气象科学研究所,福州350001

出　　处：《气象科技》2004年第1期44-47,共4页Meteorological Science and Technology

基　　金：国家科技攻关项目"人工增雨成套技术预研究"资助

摘　　要：利用南昌、赣州 2个探空站 1988～ 1997年 7～ 9月 0 7:0 0与 19:0 0探空资料和江西省 85个气象台站 1988～1997年 7～ 9月降雨量资料 ,对降水效率进行计算和分析 ,结果表明 ,江西省历年 (1988～ 1997)季降水效率为7 6 5 % ,7、8、9月各为 7.0 4 %、9.90 %、6 .0 2 % ,降水效率最大值为 13.77% ,最小值为 3.5 5 %。低压辐合类天气影响时降水效率最大 ,季平均值为 2 0 .4 8% ,其它依次是低槽、台风低压、大陆高压、东风波影响时降水效率也比较大 ,季平均值各为 11.90 %、8.5 6 %、7.0 5 %、7.0 4 % ,台风外围影响时降水效率最小为 3.33%Usual radiosonde data (1988 to 1997,07:00,19:00) and surface precipitation data (1988 to 1997) are used, and the natural precipitation efficiency in summer in Jiangxi is calculated and analyzed. The results indicate that the average precipitation efficiency in summer is 7.65% in the period of 1988 to 1997, 7.04%, 9.90%, 6.02% in July, August, September in Jiangxi Province, respectively. The maximum precipitation efficiency is 13.77%. The minimum precipitation efficiency is 3.55%. Under the influence of the weather of low-pressure convergent systems, the precipitation efficiency is the greatest (20.48%) and under the influence of the weather of typhoon low systems, the precipitation efficiency is the least (3.33%). The precipitation efficiencies are 11.90%, 8.56%, 7.05%, 7.04% under the weather systems of low-though, typhoon low pressure, continental high pressure, easterly wave, respectively.

关 键 词：水汽循环 水资源再生 降水效率 夏季 江西 

分 类 号：P426.6[天文地球—大气科学及气象学]