| 不同降水天气系统自然降水特征及火箭人工增雨潜力分析 |
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| 引用本文： | 吴志会,段英,张晶,石立新.不同降水天气系统自然降水特征及火箭人工增雨潜力分析[J].气象科技,2005(Z1). |
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| 作者姓名： | 吴志会 段英 张晶 石立新 |
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| 作者单位： | [1]河北省人工影响天气办公室 [2]河北省气象局 [3]石家庄 |
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| 基金项目： | 河北省“十五”攻关课题(03220602D)资助 |
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| 摘 要： | 统计分析了1981~2000年20年中15种降水天气系统影响下河北地区自然降水特征,并对火箭人工增雨的潜力进行了初步分析。统计分析表明:西来槽类、高空低涡类、冷锋、切变线和副高后部等天气系统是影响河北地区的主要降水系统,其降雨量和降雨日数占到了90%以上;不同的天气系统在不同季节对降水的贡献有所不同,其中西来槽类的降雨量和降雨日数均居首位,开展人工增雨催化作业机会最多;夏季降水系统最强,云水资源最为丰富,人工增雨潜力很大,是开展火箭人工增雨催化作业的最佳季节,春秋两季增雨潜力明显比夏季小,冬季最小;倒槽、副高后部、台风低压、高空低涡类和气旋类等系统最强,日降雨量和单位面积降雨量明显比其它系统大,尤其对蓄水型火箭增雨作业十分有利。
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| 关 键 词： | 天气系统 降水特征 火箭人工增雨潜力 |
Characteristics of Natural Precipitation under Various Weather Systems in Different Seasons and Potential of Rocket Rainfall Enhancement |
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| Wu Zhihui Duan Ying Zhang Jing Shi Lixin.Characteristics of Natural Precipitation under Various Weather Systems in Different Seasons and Potential of Rocket Rainfall Enhancement[J].Meteorological Science and Technology,2005(Z1). |
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| Authors: | Wu Zhihui Duan Ying Zhang Jing Shi Lixin |
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| Institution: | Wu Zhihui~1 Duan Ying~1 Zhang Jing~2 Shi Lixin~1 |
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| Abstract: | The natural precipitation characteristics and rainfall enhancement potentials are analyzed based on 15 weather patterns from 1981 to 2000 years in Hebei Province.The results show that the westerly trough,low vortex,cold front, shear line and the weather system at rear end of the subtropical high pressure system are the main precipitation weather systems,accounting for more than 90 percent of both total precipitation and the number of rainy days.The contribution of various weather systems to precipitation varies in different seasons,and the rainfall and the number of rainy days induced by the westerly trough are the greatest.The precipitation weather systems and the cloud water resources are the strongest and the richest in summer,so that it is the best season for rocket seeding operations.The rainfall enhancement potential is smaller in spring and autumn,and the least in winter.The converse trough,typhoon low-pressure,upper-level low vortex and cyclones are the suitable weather systems for rocket precipitation enhancement with greater rainfall amount. |
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| Keywords: | weather system precipitation characteristic rocket precipitation enhancement potential |
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