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| 蒙古气旋引发辽宁沙尘暴天气过程的数值模拟 | |
| 引用本文： | 刘宁微,马雁军,刘晓梅,周德平,王扬锋,王若男.蒙古气旋引发辽宁沙尘暴天气过程的数值模拟[J].中国沙漠,2011,31(1):217-222. |
| 作者姓名： | 刘宁微 马雁军 刘晓梅 周德平 王扬锋 王若男 |
| 作者单位： | 1. 中国气象局,沈阳大气环境研究所,辽宁,沈阳,110016 2. 沈阳区域气候中心,辽宁,沈阳,110016 3. 丹东市气象局,辽宁,丹东,118000 |
| 基金项目： | 2008年公益性行业(气象)科研专项，国家自然科学基金 |
| 摘 要： | 从一次发生在辽宁,由蒙古气旋引发的沙尘暴过程入手,利用数值模拟手段,结合常规气象观测资料,围绕蒙古气旋的动力、热力特征以及如何促成此次沙尘暴的发生、发展和维持进行探讨。结果表明,高空气流的辐散抽吸是此次过程的主要起沙动力机制,由蒙古国中部向东南方向延伸至韩国南部的副热带西风急流为此次辽宁沙尘暴过程提供了充足的沙源。此外,蒙古气旋内部的垂直环流与控制辽宁地区的冷平流对此次沙尘暴和降温过程具有一定的触发与维持作用。 |
| 关 键 词： | 蒙古气旋 沙尘暴 辐散抽吸 垂直环流 |
| 收稿时间： | 2010-3-22 |
| 修稿时间： | 2010-5-28 |
Numerical Simulation of a Dust Storm Process in Liaoning Caused by a Mongolian Cyclone |
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| LIU Ning-wei,MA Yan-jun,LIU Xiao-mei,ZHOU De-ping,WANG Yang-feng,WANG Ruo-nan.Numerical Simulation of a Dust Storm Process in Liaoning Caused by a Mongolian Cyclone[J].Journal of Desert Research,2011,31(1):217-222. | |
| Authors: | LIU Ning-wei MA Yan-jun LIU Xiao-mei ZHOU De-ping WANG Yang-feng WANG Ruo-nan |
| Institution: | LIU Ning-wei1,MA Yan-jun1,LIU Xiao-mei2,ZHOU De-ping1,WANG Yang-feng1,WANG Ruo-nan3(1.Institute of Atmospheric Environment,China Meteorological Administration,Shenyang 110016,China,2.Shenyang Regional Climate Center,3.Dandong Meteorological Bureau,Dandong 118000,Liaoning,China) |
| Abstract: | A dust storm event caused by a Mongolian cyclone was numerically simulated,and the dynamical,thermal features of the Mongolian cyclone and its impact on the dust storm process were analyzed.The results showed that pumping effect of the divergence at upper level was the main dynamical mechanism of the dust emission and the westerly jet from the middle Mongolia to the southern Korea offered sand source of this dust event.Vertical circulation in Mongolian cyclone and the cold advection over Liaoning were also ... |
| Keywords: | Mongolian cyclone dust storm pumping effect of the divergence vertical circulation |
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