雅鲁藏布江流域气温变化特征及趋势分析  

Analyses of Characteristics and Trend of Air Temperature Variation along the Brahmaputra Valley

作　　者：宋敏红[1,2] 马耀明[3] 张宇[1,2] 李茂善[1,2] 马伟强[1,2] 孙方林[1,2] 

机构地区：[1]中国科学院寒旱区陆面过程与气候变化重点实验室,兰州730000 [2]中国科学院寒区旱区环境与工程研究所,兰州730000 [3]中国科学院青藏高原研究所,北京100085

出　　处：《气候与环境研究》2011年第6期760-766,共7页Climatic and Environmental Research

基　　金：国家自然科学基金项目41075053;40825015;欧盟第六框架项目FP6-036952;欧盟第七框架项目212912

摘　　要：通过分析1980～2005年间雅鲁藏布江流域7个气象台站平均的气温变化趋势和气候系数变化,并进一步分析了1960～2005年间该流域中游日喀则站和下游林芝站气温的变化趋势,研究了该流域气温变化对全球变暖的响应。结果表明,1980～2005年间雅鲁藏布江流域的气温呈现逐渐升高的趋势,尤其是夜间气温和冬、春季气温的升高更显著,而且该流域变暖幅度高于整个高原的平均增幅,因此该流域对全球变暖的响应程度也较整个高原更为显著;而该流域中游地区的增温幅度要明显高于下游地区的,即该流域中游地区的增暖较下游地区的更为显著。By analyzing the changes of averaged temperature along the Brahmaputra valley from 1980 to 2005 and the change trend of temperature at Xigazê and Nyingchi stations from 1960 to 2005, the response of the temperature change over the Brahmaputra valley to the global warming had been analyzed. The results show that the temperature over the Brahmaputra valley became warmer from 1980 to 2005, especially the temperature increased at night time and in winter or spring time. And its change magnitude is higher than that over the whole Tibetan Plateau. Therefore, the response of the temperature change over the Brahmaputra valley to the global warming is more evident than that of the whole Tibetan Plateau during the period. Meanwhile, the change trend of temperature at Xigazê station of the mid-reach Brahmaputra valley has increased more than that at Nyingchi station of its lower-reach region.

关 键 词：雅鲁藏布江流域 气候变化趋势 全球变暖 

分 类 号：P423[天文地球—大气科学及气象学]