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| 全球气候变暖对西北地区秋季降水的影响 | |
| 引用本文： | 张存杰,高学杰,赵红岩.全球气候变暖对西北地区秋季降水的影响[J].冰川冻土,2003,25(2):157-164. |
| 作者姓名： | 张存杰 高学杰 赵红岩 |
| 作者单位： | 1. 中国气象局,兰州干旱气象研究所,甘肃,兰州,730020 2. 中国气象局,国家气候中心,北京,100081 3. 兰州中心气象台,甘肃,兰州,730020 |
| 基金项目： | 中国科学院知识创新工程项目;KZCX1-10-06; |
| 摘 要： | 分析了在全球气候变暖背景下，西北地区秋季降水的时空变化特征和主要影响因素，发现秋季降水量的均值突变现象在四季中最为明显，西北地区东部和西部降水在年代际尺度上具有相反的变化趋势．El Nino年秋季，新疆脊偏强，印缅槽偏弱，西北地区东部降水偏少；La Nina年秋季降水形势相反．CO2倍增情况下的数值试验表明，西北地区西部夏季降水增加明显，而秋季不明显；西北地区东部夏季降水呈减少趋势，而秋季降水增加明显． |
| 关 键 词： | 全球气候变暖 西北地区 秋季 降水 气温 |
| 文章编号： | 1000-0240(2003)02-0157-08 |
| 修稿时间： | 2002年10月26日 |
Impact of Global Warming on Autumn Precipitation in Northwest China |
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| ZHANG Cun jie ,GAO Xue jie ,ZHAO Hong yan.Impact of Global Warming on Autumn Precipitation in Northwest China[J].Journal of Glaciology and Geocryology,2003,25(2):157-164. | |
| Authors: | ZHANG Cun jie GAO Xue jie ZHAO Hong yan |
| Institution: | ZHANG Cun jie 1,GAO Xue jie 2,ZHAO Hong yan 3 |
| Abstract: | On the background of global warming, the spatial and temporal variation characteristics of autumn precipitation were analyzed in Northwest China; major influencing factors were also studied. It was found that the catastrophe of autumn precipitation is more obvious than that in other seasons. The interannual variation of precipitation presents a contrary trend between the East and the West. In the autumn of El Nino years, Xinjiang ridge is intensified, India-Burma trough is weakened, and the east of Northwest China is dry. The case of La Nina years is opposite. Numerical simulation experiment has been carried out with doubling CO 2 using the regional climatic model. The results show that in west of Northwest China, precipitation will increase in summer, but it is not obvious in autumn; in east of Northwest China, the case is opposite, autumn precipitation will increase obviously. |
| Keywords: | global warming Northwest China autumn precipitation |
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