| 祁连山东段积雪面积变化及其区域气候响应 |
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| 引用本文： | 韩兰英,孙兰东,张存杰,郭爱民. 祁连山东段积雪面积变化及其区域气候响应[J]. 干旱区资源与环境, 2011, 0(5): 109-112 |
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| 作者姓名： | 韩兰英 孙兰东 张存杰 郭爱民 |
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| 作者单位： | 中国气象局兰州干旱气象研究所中国气象局干旱气候变化与减灾开放实验室甘肃省干旱气候变化与减灾重点实验室;西北区域气候中心;兰州中心气象台; |
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| 基金项目： | 西北区域气候变化评估报告、中国气象局2010年气候变化专项; 甘肃省气象局科研项目(2008-09,2010-08)资助 |
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| 摘 要： | 积雪的动态研究是目前全球变化研究的热点,祁连山位于河西走廊南侧,是甘肃气候变化的敏感区和关键区,其积雪的动态分布对气候变化的影响和响应研究具有重要意义.在气候变暖的大背景下,祁连山积雪面积发生了变化,文中利用EOS/MODIS、NOAA资料以及气象资料,应用线性光谱混合模型提取像元内积雪所占比例,分析祁连山积雪面积时间...
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| 关 键 词： | 祁连山 积雪面积 气候变化 |
The snow coverage change in eastern section of Qilian Mountain and its responding to regional climate |
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| HAN Lanying,ZHANG L,ong,ZHANG Cunjie,GUO Aimin. The snow coverage change in eastern section of Qilian Mountain and its responding to regional climate[J]. Journal of Arid Land Resources and Environment, 2011, 0(5): 109-112 |
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| Authors: | HAN Lanying ZHANG L ong ZHANG Cunjie GUO Aimin |
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| Affiliation: | HAN Lanying1,2,ZHANG Landong2,ZHANG Cunjie2,GUO Aimin3(1.Institute of Arid Meteorology,CMA,Key Open Laboratory of Arid Climatic Change and Reducing Disaster of CMA,Key Laboratory of Arid Climatic Change and Reducing Disaster,Lanzhou 730020,P.R.China,2.Northwest Regional Climate Center,Lanzhou 730000,3.Lanzhou Central Observatory,P.R.China) |
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| Abstract: | The dynamic research of the snows is the present hot point of the global chang.Qilian Mountain located at the south side in Hexi Corridor,and is the climatic change sensitive and the essential area in Gansu,its snow dynamic distribution has the important meaning to climatic change's influence and the response.Based on EOS/MODIS,NOAA data and weather data,snow proportion were distilled by the linear and commixtured spectrum model.Spatial-temporal distribution of the Qilian Mountain snow、 climate change and its response were monitored and analyzed.Results found: the total snow area of Qilian Mountain showed waveform changes in 1997-2006,a linear and increasing trend.But the eastern and the middle snow area of the Qilian Mountains showed the reducing trend.By analyzing of the general trend of the climatic change,including the temperature,the precipitation,the evaporation,the maximum thickness of the frozen layer and snow area conditions,we found that the snow area of the east consistented with the local climatic conditions,therefore,the eastern snow of the Qilian Mountains were mostly influenced by local climatic conditions. |
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| Keywords: | QiLian Mountain snow cover climatic change |
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