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| 西北地区一次沙尘暴过程的诊断分析及地形影响的模拟试验 | |
| 引用本文： | 王建鹏,沈桐立,刘小英,李明,薛春芳,孟小绒,宁海文.西北地区一次沙尘暴过程的诊断分析及地形影响的模拟试验[J].高原气象,2006,25(2):259-267. |
| 作者姓名： | 王建鹏 沈桐立 刘小英 李明 薛春芳 孟小绒 宁海文 |
| 作者单位： | 1. 南京信息工程大学,江苏,南京,210044;西安市气象局,陕西,西安,710016 2. 南京信息工程大学,江苏,南京,210044 3. 西安市气象局,陕西,西安,710016 4. 陕西省气象台,陕西,西安,710014 |
| 摘 要： | 以实况资料作初始场,利用改进的MM4中尺度模式对西北地区2001年4月8~9日强沙尘暴天气过程的位势涡度、涡度、垂直速度、螺旋度等热、动力物理量的水平和垂直分布特征进行了分析,发现各物理量场在沙尘暴发展的不同时期有着很好的配置,物理量量值及其分布特征的变化与沙尘暴天气的形成、发展、消弱的不同时期有着很好的对应。通过改变秦岭及河西走廊地形进行数值模拟试验,发现秦岭地形对此次沙尘暴天气系统影响很弱,而河西走廊地形对沙尘暴天气系统影响较大,河西走廊狭窄的地形为沙尘暴形成提供了有利的地理环境。 |
| 关 键 词： | 沙尘暴 诊断分析 地形 数值模拟试验 |
| 文章编号： | 1000-0534（2006）02-0259-09 |
| 收稿时间： | 2004-07-20 |
| 修稿时间： | 2004-07-202004-11-17 |
Diagnosing Analyses and Topography Simulation of a Sand-Dust Storm Event in Northwest China |
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| WANG Jian-peng,SHEN Tong-li,LIU Xiao-ying,LI Ming,XUE Chun-fang,MENG Xiao-rong,NING Hai-wen.Diagnosing Analyses and Topography Simulation of a Sand-Dust Storm Event in Northwest China[J].Plateau Meteorology,2006,25(2):259-267. | |
| Authors: | WANG Jian-peng SHEN Tong-li LIU Xiao-ying LI Ming XUE Chun-fang MENG Xiao-rong NING Hai-wen |
| Abstract: | Using the observed initial field,the improved mesoscale model MM4 was employed to simulate the sand-dust storm over Northwest China from 8 to 9 April 2001,its simulated results were analyzed The simulations revealed that these parameters were good collaboration each other,their values and spatial distributions were well-corresponding to the forming,developing and decaying of dust event.The sensitivity experiments of topography showed that the impacts of Qinling mountain on this dust event was ignorable,but Hexi corridor was important,indicating that the narrow lane of Hexi corridor provide an available topography condition for dust storm processing. |
| Keywords: | Sand-dust storm Diagnosing analysis Topography Numerical simulation |
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