哈密地区平原区与山区气候变化差异性分析

利用水文气象站点数据采用线性趋势分析法和Mann-kendall检验法分析了哈密地区与水资源息息相关的山区与平原区气候要素变化的差异性。结果表明：山区与平原区实测站点气候要素多年平均月系列变化规律与趋势基本一致,在量上存在一定的差异;气象站点与水文站点降水要素均呈波动增加的趋势,总体不明显,山区与平原无明显的差别,相对以头道沟站降水增加较明显;气温均呈波动升高的趋势,并且受所处的地理位置影响较大,在相近经度方向上山区气温的升高幅度高于平原区;哈密气象站与头道沟水文站点降水以上世纪70年代增幅最明显,而伊吾气象站和苇子峡水文站以上世纪80-90年代降水增幅最明显;气温除伊吾气象站上世纪90年代升温明显外,其他各站点均以70-80年代升温最明显。

Analysis on Climate Change Difference of Plain Areas and Mountainous Regions in Hami

Based on the selected long series of hydro-meteorological station data,the difference on Climate change of Plain areas and mountainous regions in Hami was discussed with the linear trend analysis and Mann-Kendal test method,because it is closely related to water resources.. It is found that the variation law and trends of measured annual average monthly series is a close correspondence in Plain areas and mountainous regions,only there are some differences in the amount. Precipitation showed a fluctuations increasing trend,but the trend is not obvious,there was no significant difference in mountains and plains; however,precipitation has obviously increased in Toudaogou stations. Temperature showed a fluctuation rising trend,it was greatly influenced by geographical location,and air temperature raises magnitude of mountainous areas is higher than Plain regions in similar longitude direction. The precipitation of Hamilton weather station and Toudaogou hydrological station has the most obvious increase in 1960 ＇s ~ 1970 ＇s,Yiwu weather stations and Weizixia hydrological stations is from 1980 ＇s to 1990 ＇s. Except for temperatures raised obvious of Yiwu weather station in 1980 ＇s to 1990 ＇s,other station have the most obvious warming in 1970 ＇s ~ 1980 ＇s.