青藏高原季风对我国西北干旱区气候的影响  

The Effect of Tibetan Plateau Monsoon on the Climate in the Arid Area of Northwest China

作　　者：荀学义[1,2,3] 胡泽勇 崔桂凤[5] 张和平 胡英华 杨保成 XUN Xueyi1, 2, 3, HU Zeyong1, 4, CUI Guifeng5, ZHANG Heping3, HU Yinghua3, and YANG Baocheng6（1 Key Laboratory for Land Surface Process and Climate Change in Cold and Arid Regions, Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Sciences, Lanzhou 730000 2 School of Ecology and Environment, Inna Mongolia University, Hohhot 010021 3 Inner Mongolia Autonomous Region Meteorological Observatory, Hohhot 010051 4 Center for Excellence in Tibetan Plateau Earth Sciences, Chinese Academy of Sciences, Beijing 100101 5 No.18 Middle School of Hohhot, Hohhot 010022 6 Hulunbuir Meteorological Bureau, Hulunbuir, Inner Mongolia Autonomous Region 021008）

机构地区：[1]中国科学院寒区旱区环境与工程研究所寒旱区陆面过程与气候变化重点实验室,兰州730000 [2]内蒙古大学生态与环境学院,呼和浩特010021 [3]内蒙古自治区气象台,呼和浩特010051 [4]中国科学院青藏高原地球科学卓越创新中心,北京100101 [5]内蒙古呼和浩特市第十八中学,呼和浩特010022 [6]呼伦贝尔市气象局,内蒙古自治区呼伦贝尔021008

出　　处：《气候与环境研究》2018年第3期311-320,共10页Climatic and Environmental Research

基　　金：中国科学院战略性先导科技专项XDA2006010101;中国科学院寒旱区陆面过程与气候变化重点实验室开放基金项目LPCC201306;国家自然科学基金项目91537101;41661144043~~

摘　　要：基于ERA-Interim逐月再分析资料及同期高原和我国西北干旱区观测站温度与降水资料,分析高原季风与西北干旱区气候的关系,对比高原典型强弱季风年平均大尺度环流和水汽输送条件的差异,探讨高原强弱季风年西北干旱区气候差异形成的原因。研究结果表明:高原季风与我国西北干旱区气候相关关系显著;高原强弱季风年对应的大尺度环流和垂直环流系统存在明显差异;水汽条件和抬升条件好坏与降水量多寡配合得较好,即强高原季风年,高原北部边缘水汽条件和抬升条件更有利于降水,而弱高原季风年,高原北部边缘水汽条件和抬升条件偏差,对应降水量较常年同期偏少。Based on monthly mean ERA-Interim reanalysis data and the temperature and precipitation data in the arid area of Northwest China during 1979-2013, differences in climate in the arid area of Northwest China between strong and weak monsoon years are analyzed. Correlation between the plateau monsoon and climate in the arid area of Northwest China is quantified. The mean large-scale circulation and water vapor transport are compared between strong and weak plateau monsoon years. The results show that the correlation between the plateau monsoon and climate in the arid area of Northwest China is significant. There are obvious differences in large scale circulation and vertical circulation system between the strong and weak monsoon years. The water vapor condition and uplifting condition are in good agreement with precipitation. The ability of water vapor uplifting along the northern flank of the Plateau is one of the important factors affecting climate in the arid area of Northwest China.

关 键 词：高原季风 西北干旱区 环流系统 水汽输送 

分 类 号：P462.41[天文地球—大气科学及气象学]