| 辽西北地区春播期干旱及增雨天气特征分析 |
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| 引用本文： | 张国林,邓卓,梁群.辽西北地区春播期干旱及增雨天气特征分析[J].安徽农业科学,2009,37(10):4548-4549. |
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| 作者姓名： | 张国林 邓卓 梁群 |
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| 作者单位： | 辽宁省朝阳市气象局,辽宁朝阳,122000 |
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| 摘 要： | 目的]研究辽西北地区春季干旱发生规律及春雨形成的天气特征,为春播抗旱防灾、人工增雨作业提供依据。方法]采用常规数理统计方法和经验公式分析干旱概率和干旱规律。结果]辽西北地区春播期重干旱年份约占40%,轻干旱约占30%,1/3年份春季透雨不足;春季干旱存在着10～11年的周期性,逢1、2、3年份出现干旱达80%。东北低压、华北低压和冷锋云系是春播期降水主要天气特征。结论]掌握春季干旱发生规律和春季降雨天气特征,可为抗旱防灾及春播期实施人工增雨作业提供依据。
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| 关 键 词： | 春播期 人工增雨 天气特征 干旱 |
Liaoxibei Region Spring Sowing Period of Drought and Rainfall Weather Analysis |
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| ZHANG Guo-lin et al.Liaoxibei Region Spring Sowing Period of Drought and Rainfall Weather Analysis[J].Journal of Anhui Agricultural Sciences,2009,37(10):4548-4549. |
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| Authors: | ZHANG Guo-lin |
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| Institution: | ZHANG Guo-lin et al(Chaoyang Meteological Bureau of Liaoning Province,Chaoyang,Liaoning 122000) |
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| Abstract: | Objective] The research aimed to study the occurrence regularity of spring drought and weather characteristics of spring rain formation in the northwest area of Liaoning so as to provide the basis for the spring drought disaster prevention and artificial precipitation.Methods]The conventional methods of mathematical statistics and analysis of empirical formula were applied for the drought probability and drought law.Results]The probability of heavy drought was about 40% during spring sowing while that of... |
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| Keywords: | Spring sowing Artificial precipitation Weather characteristics Drought |
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