钱塘江流域极端气温和最大降水事件的时空变化  

Analysis of spatial and temporal variation of extreme temperatures and maximum precipitation in Qiantangjiang Basin

作　　者：张徐杰[1] 林盛吉 田烨[1] 徐晓[1] 许月萍[1] 

机构地区：[1]浙江大学水文与水资源工程研究所,浙江杭州310058 [2]奉化市水利局,浙江奉化315500

出　　处：《河海大学学报（自然科学版）》2011年第6期635-639,共5页Journal of Hohai University(Natural Sciences)

基　　金：国家自然科学基金(50809058);浙江省自然科学基金(Z5080048);教育部博士点新教师基金(200803351029);国家国际科技合作计划(2010DFA24320)

摘　　要：基于1951—2008年钱塘江流域内外15个气象站月极端高温、月极端低温和月最大降水量资料,采用Mann-Kendall趋势分析方法和协克里金插值方法分析了不同区域、不同季节的极端气温和最大降水量的空间分布及变化趋势特征.结果表明:钱塘江流域最大降水量总体呈缓慢减少的状态,而极端气温都有上升的趋势;季节分布上,夏季最大降水量有增加的趋势,其他季节降水量减少,而极端气温在各个季节都呈升温趋势;空间分布上,钱塘江流域极端高温有着较为明显的地域差别,沿海一带极端高温上升快,尤以嵊县一带最为严重,而淳安一带变化趋势最不明显.Based on statistics of monthly maximum precipitation and extremely high and low temperatures from 15 weather stations in the Qiantangjiang Basin from 1951 to 2008,the characteristics of the spatial distribution and change trend of extreme temperatures and maximum precipitation in different regions and seasons were analyzed with the co-kriging interpolation method and the Mann-Kendall trend method.The results show the following： the maximum precipitation shows a gradually decreasing trend in general,while the extreme temperatures have a rising trend;the maximum precipitation has an increasing trend in the summer and a decreasing trend in other seasons,and the extreme temperatures have a decreasing trend in all seasons;and there are obvious differences in the extreme temperatures between various areas in the Qiantangjiang Basin： the extremely high temperature grows rapidly in the coastal areas,particularly in Sheng County,while the change trend is not obvious in Chun＇an County.

关 键 词：钱塘江流域 极端气温 最大降水量 空间分布特征 

分 类 号：P333[天文地球—水文科学] P467[水利工程—水文学及水资源]