| 荒漠化扩展对我国区域气候变化影响的数值模拟 |
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| 引用本文： | 张志富,王澄海,邱崇践.荒漠化扩展对我国区域气候变化影响的数值模拟[J].兰州大学学报(自然科学版),2006,42(6):22-26. |
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| 作者姓名： | 张志富 王澄海 邱崇践 |
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| 作者单位： | 兰州大学,大气科学学院,甘肃,兰州,730000 |
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| 基金项目： | 国家自然科学基金重点项（90202014）、国家重点基础研究发展规划项（G1999043408）、教育部重点项目（10425）和中国科学院创新项目（ZKCX2-SW-210）资助. |
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| 摘 要： | 使用区域气候模式RegCM3研究了西北沙漠面积变化对我国区域气候变化的影响．共设计了3组试验：控制试验A、沙漠面积扩展试验B、在试验B基础上增大粗糙高度的试验C．分析表明：中国西北沙漠区扩展后对中国夏季降雨量和中国夏季风有明显影响．结果表明：植被退化、荒漠化加剧会导致季风减弱，降水量减少，增大地面粗糙高度后的影响更为显著．
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| 关 键 词： | 沙漠化扩展 区域气候模式 气候模拟 西南季风 |
| 文章编号： | 0455-2059（2006）06-0022-05 |
| 收稿时间： | 07 4 2005 12:00AM |
| 修稿时间： | 2005-07-042006-10-09 |
Simulation of the impact of desertification on the regional climate changes in China |
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| ZHANG Zhi-fu,WANG Cheng-hai,QIU Chong-jian.Simulation of the impact of desertification on the regional climate changes in China[J].Journal of Lanzhou University(Natural Science),2006,42(6):22-26. |
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| Authors: | ZHANG Zhi-fu WANG Cheng-hai QIU Chong-jian |
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| Institution: | School of Atmospheric Sciences, Lanzhou University, Lanzhou 730000, China |
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| Abstract: | The NCAR RegCM3 regional climate model has been used to study the influence of northern desertification expanse on regional climate changes in China. Three experiments are set up for this purpose: one is the control experiment A, the second is the experiment B with expand desert and the third is the experiment C with increasing roughness length under the base of experiment A. It was found that there has been much evident influence of desertification expanse in northern China on the summer precipitation and summer monsoon over China. The result shows that vegetation degeneration and desertification expanse will weaken summer monsoon and reduce precipitation. When the roughness length becomes larger, the result is clearer. |
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| Keywords: | desertification expanse regional climate model climate simulation southwest monsoon |
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