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中国农学通报 ›› 2015, Vol. 31 ›› Issue (20): 208-212.doi: 10.11924/j.issn.1000-6850.casb14100030

所属专题: 农业气象

• 资源 环境 生态 土壤 气象 • 上一篇    下一篇

天水市近30年第1场透雨的时空变化特征

马 杰1,李晓静2,汪鸿滨1,刘 亮1,赵 宁1,叶晓文1   

  1. (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)
  • 收稿日期:2014-10-13 修回日期:2015-05-06 接受日期:2015-05-25 出版日期:2015-07-28 发布日期:2015-07-28
  • 通讯作者: 马 杰
  • 基金资助:
    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)。

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

Ma Jie1, Li Xiaojing2, Wang Hongbin1, Liu Liang1, Zhao Ning1, Ye Xiaowen1   

  1. (1Tianshui Meteorological Bureau, Gansu Province, Tiasnhui Gansu 741000;2College of Horticulture, Fujian Agriculture and Forestry University, Fuzhou 350002)
  • Received:2014-10-13 Revised:2015-05-06 Accepted:2015-05-25 Online:2015-07-28 Published:2015-07-28

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。

关键词: 半岛地区, 半岛地区, 夏玉米, 播期密度

Abstract: In order to explore the variation characteristics of the first saturating rain of spring, its spatial and temporal variation was analyzed with the precipitation data during March to May of 7 meteorological stations located in Tianshui from 1981 to 2010. The results showed that the date of the first saturating rain delayed from southeast to northwest in Tianshui. The earliest time was on 7th March and the latest time was on 31th May. The precipitation of the first saturating rain in March was below 15 mm, and the saturating rain with the precipitation of 15-20 mm and ≥20 mm appeared during April to May. The trend of the first saturating rain is turning to be earlier and its precipitation amount is decreasing in recent 30 years.