| 天津市近50a来降水变化分析 |
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| 引用本文： | 胡蓓蓓,王军,许世远,陈晶晶,刘耀龙,谢翠娜,叶明武,赵庆良.天津市近50a来降水变化分析[J].干旱区资源与环境,2009(8). |
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| 作者姓名： | 胡蓓蓓 王军 许世远 陈晶晶 刘耀龙 谢翠娜 叶明武 赵庆良 |
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| 作者单位： | 华东师范大学地理信息科学教育部重点实验室;天津师范大学城市与环境科学学院; |
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| 基金项目： | 国家自然科学基金项目(40730526,40571006,70703010)资助 |
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| 摘 要： | 根据天津市13个气象站近50年的实测月降水资料,运用回归分析、趋势分析和5年滑动平均等方法,分析了天津市近50年来降水变化特征。结果表明:天津市降水量年内分配不均,主要集中在7~8月份,占全年降水量的53.98%~60.64%;天津市年降水波动较大,极差在470.00~944.80之间;20世纪70年代是近50年来天津市年降水量最多的十年,80年代以来,年降水量持续减少,尤其是二十一世纪以来,年降水量显著减少;天津市年降水量总体上呈减少趋势,各站平均下降率为22.97mm/10 a。
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| 关 键 词： | 天津市 降水量 变化特征 变化趋势 |
Analysis on characteristics of precipitation change in Tianjin over the past 50 years |
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| HU Beibei,WANG Jun,XU Shiyuan,CHEN Jingjing,LIU Yaolong,XIE Cuina,YE Mingwu,ZHAO Qingliang.Analysis on characteristics of precipitation change in Tianjin over the past 50 years[J].Journal of Arid Land Resources and Environment,2009(8). |
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| Authors: | HU Beibei WANG Jun XU Shiyuan CHEN Jingjing LIU Yaolong XIE Cuina YE Mingwu ZHAO Qingliang |
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| Institution: | 1.Key Laboratory of Geographic Information Science of Ministry of Education;East China Normal University;Shanghai 20062;P.R.China;2.College of Urban and Environment Science;Tianjin Normal University;Tianjin 300387;P.R.China |
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| Abstract: | Based on the monthly precipitation data of thirteen meteorological stations in Tianjin in recent 50 years,using regression analysis,trend analysis and five-year moving average method,the change characteristics of precipitation were analyzed.The results showed that annual distribution of precipitation was uneven,mainly concentrated in July and August,accounting for 53.98%~60.64% of the annual precipitation;the fluctuation of the mean annual precipitation was big,between 470.00~944.80mm;the annual mean precip... |
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| Keywords: | Tianjin precipitation change characteristics change trend |
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