天水市近30年第1场透雨的时空变化特征  

Spatial and Temporal Variation Characteristics of the First Saturating Rain of Spring in Recent 30 Years in Tianshui

作　　者：马杰[1] 李晓静[2] 汪鸿滨[1] 刘亮[1] 赵宁[1] 叶晓文[1] 

机构地区：[1]甘肃省天水市气象局,甘肃天水741000 [2]福建农林大学园艺学院,福州350002

出　　处：《中国农学通报》2015年第20期208-212,共5页Chinese Agricultural Science Bulletin

基　　金：天水市科技局2014科技支撑项目"天水市特色林果气象灾害监测预警平台"(2014-6);甘肃省气象局基金项目"果树气象灾害风险的综合评估技术和方法研究"(2014-12)

摘　　要：为探索天水市春季第1场透雨变化特征,运用1981—2010年天水市境内7个气象站3—5月逐日降水观测资料,对春季第1场透雨的时空变化特征进行分析。结果表明,天水市春季第1场透雨出现时间有着从东南到西北推迟的特征,最早出现时间在3月7日,最迟出现时间在5月31日。3月出现的第1场透雨大多在15 mm以下,15-20 mm及≥20 mm的第1场透雨均出现在4—5月。近30年第1场透雨出现时间呈偏早趋势,透雨量级呈递减趋势。In order to explore the variation characteristics of the first saturating rain of spring, its spatial andtemporal variation was analyzed with the precipitation data during March to May of 7 meteorological stationslocated in Tianshui from 1981 to 2010. The results showed that the date of the first saturating rain delayed fromsoutheast to northwest in Tianshui. The earliest time was on 7thMarch and the latest time was on 31 thMay. Theprecipitation of the first saturating rain in March was below 15 mm, and the saturating rain with theprecipitation of 15-20 mm and ≥20 mm appeared during April to May. The trend of the first saturating rain isturning to be earlier and its precipitation amount is decreasing in recent 30 years.

关 键 词：天水市 透雨 时空变化 特征 

分 类 号：S162.3[农业科学—农业气象学]