江西省7至9月水汽资源特征  

THE CHARACTERISTIC OF VAPOR CONTENT OF THE SUMMER ATMOSPHERE IN JIANGXI PROVINCE

作　　者：李玉林[1] 杨梅[2] 曾光平[3] 

机构地区：[1]江西省人工影响天气办公室,南昌330046 [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》2003年第3期167-173,共7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：根据天气学原理 ,对 11个探空站 1988～ 1997年 7、8、9月逐日 (0 7时、19时 )资料与同期天气系统 (低槽、副热带高压、低压辐合、东风波、台风低压、大陆高压、台风外围 )进行计算与分析 ,结果表明 ,江西省 1988～ 1997年 7～ 9月平均水汽量值为 4 .4 6 g·cm-2 ,其中 :0 7时为 4 .4 4 g·cm-2 ,19时为 4 .4 7g·cm-2 ,7、8、9月平均水汽量值各为4 .8g·cm-2 、4 .6 4 g·cm-2 、4 .0 9g·cm-2 。水汽量分布为南部高北部低 ,东部和西部居中。东风波影响时水汽量最大 ,值为 9.2 3g·cm-2 ,大陆高压影响时水汽量最小 ,值为 0 .78g·cm-2 。轻度干旱频率区水汽量值最大 ,为4 .81g·cm-2 ,最小值出现在重度干旱频率区 ,为 0 .72 g·cm-2 。夏季水汽交换次数为 9.4次 /月 ,水汽更新率为 10 .2天。According to meteorological principles and the materials in July、August、September from 11 radio wave sounding stations inside and outside Jiangxi Province vapor content of atmosphere, has been calculated and analyzed. The results suggest that average vapor content of summer atmosphere in Jiangxi Province is 4.46g/cm 2 from 1988 to 1997, 4.44g/cm 2 for 07:00(BLT), 4.47g/cm 2 for 19:00(BLT), while for July, August and September the average vapor content of atmosphere is 4.80g/cm 2, 4.64g/cm 2,4.09g/cm 2.The distribution of average vapor content in the south is high and in the north is low, in the east and west is medium. The average vapor content of easterly wave is 9.23g/cm 2 the maximum.The average vapor content of continental high pressure is 0.78g/cm 2 the minimum.The lightly drought frequency average vapor content is maximum 4.81g/cm 2,the important degree drought frequency average vapor content atmospheric is minimum 0.72g/cm 2. The vapor austausch coefficient is 9.4 sequence/mon in the summer Jiangxi Province. The vapor updating coefficient is 10.2 day.

关 键 词：水汽资源 水分平衡 人工影响天气 天气学 

分 类 号：P48[天文地球—大气科学及气象学]