黄河流域夏季0℃层高度变化及与地面气温和降水量的关系  

Variation in Summer 0℃ Level Height and Its Relationships with Temperature and Precipitation over the Yellow River Basin

作　　者：马雪宁[1] 张明军[1] 王圣杰[1] 马潜[1] 

机构地区：[1]西北师范大学地理与环境科学学院,兰州730070

出　　处：《资源科学》2011年第12期2302-2307,共6页Resources Science

基　　金：国家自然科学基金项目(编号:41161012);教育部新世纪优秀人才支持计划项目(编号:NCET-10-0019);陇原青年创新人才扶持计划项目

摘　　要：利用1960年-2010年黄河流域夏季(6月-8月)月平均气温、降水量数据及逐月0℃高度探测资料,定性与定量分析了近51年来黄河流域夏季0℃层平均高度变化趋势及与历年气温、降水量及海拔高度变化之间的关系,并用Mann-Kendall法对年际0℃层高度变化进行了突变检验。结果表明:①黄河流域夏季0℃层平均高度近51年来总体呈"下降-平稳-上升"趋势,其中20世纪60年代至70年代中期经历了一个明显的下降阶段,70年代中后期至80年代后期变化相对平缓,90年代以后发生了突变;②夏季0℃层高度变化与地面气温、海拔高度的变化在同时间段内基本一致,呈正相关性;而与降水量变化表现出相反的变化趋势。Based on data of monthly mean air temperature, monthly mean precipitation data, and 0℃ level height detection material at 14 observation stations over the Yellow River basin in summer （from June to August） during the period 1960-2010, changing trends in summer 0℃ level average height, and its relationships with changes in air temperature, precipitation, and altitude were comprehensively analyzed. The mutation test of the Mann-Kendall （M-K） method was employed for detecting mutations in interannual summer 0℃ level height series. Results show that 1） the summer 0℃ level average height generally showed a ＂decliningstationary-rising＂ trend. It experienced a significant reduction from the 1960s to mid-1970s, a relative stable period from the 1970s to 1980s, and a mutation after the 1990s. Increases in 0℃ level height indicate that temperature at the lower level of the upper atmosphere is rising. It is demonstrated that there is a climate change in the upper air as well as on the surface; 2） Variation in summer 0% level height showed a generally consistent trend as variation in surface temperature with altitude; it exhibited positive correlation as opposed to variation trend in precipitation.

关 键 词：黄河流域 0℃层高度 突变分析 相关性分析 

分 类 号：P426.613[天文地球—大气科学及气象学]