内蒙古西部地区气候变化特征及影响因子分析  

The characteristics of climate change and the impact factors analysis in the western part of Inner Mongolia

作　　者：李静[1] 何清[2] 姚俊强[3] 胡文峰[4] 

机构地区：[1]宿州学院地球科学与工程学院,宿州234000 [2]中国气象局乌鲁木齐沙漠气象研究所,乌鲁木齐830002 [3]新疆大学资源与环境科学学院,乌鲁木齐830046 [4]兰州大学资源环境学院,兰州730000

出　　处：《干旱区资源与环境》2014年第5期186-191,共6页Journal of Arid Land Resources and Environment

基　　金：国家自然基金项目(41175017);气象行业专项(GYHY201006012);国家重点基础研究发展计划973项目(2010CB951001)共同资助

摘　　要：利用内蒙古西部地区8个台站的逐月气温、降水资料,采用线性趋势和Mann-Kendall突变检验等方法,结合大气环流指数、涛动和季风等影响因子,研究了内蒙古西部地区1961-2009年温度和降水的变化特征,探讨了区域气候变化与影响因子的关系。研究表明:1961年以来,内蒙古西部地区气温呈显著增加趋势,增加趋势为0.42℃/10a,冬季对气候变暖的贡献最大;21世纪以来增加最显著,在1990年发生突变。降水量也呈现出明显的增加趋势,冬季的增加趋势最显著,但没有表现出明显的突变特征。内蒙古西部地区气温变化与青藏高原指数、北极涛动指数和西风环流指数有明显的正相关关系,而东亚夏季风的进退以及所携带的水汽是影响该区域降水量变化的主要因素之一。Using data of the temperature and precipitation at nine meteorological stations in the western Inner Mongolia,with the help of Linear trend and Mann-Kendall trend test method,combined with the impact factors of atmospheric circulation index and oscillation and monsoon,the variation characteristics of the temperature and precipitation in 1961-2009 in the west of Inner Mongolia were studied,the relationship between regional climate change and influence factors was discussed. Research shows that since 1961,the temperatures in the western region of Inner Mongolia showed increasing trend of 0. 42℃ /10a,the greatest contribution to climate warming was in winter; since twenty-first Century the temperatures increase was the most significant and the mutations occurred in 1990. The precipitation also showed an obvious increasing trend,and the most significant increasing trend was in winter,but showed no obvious mutation characteristics. The best correlation was between the air temperature in the western region of Inner Mongolia and the Tibetan Plateau index,at the same time with the Arctic Oscillation and the westerly circulation index. In the background of global warming,the Tibetan Plateau index,the Arctic Oscillation and westerly circulation index had important effect on the temperature. There was a good negative correlation between the precipitation and the advance and retreat of the East summer monsoon,which was one of the main factors affecting the change of the regional precipitation.

关 键 词：气候变化 气温 降水 影响因子 内蒙古西部 

分 类 号：P467[天文地球—大气科学及气象学]