干旱区生态环境知识资源中心(Arid): 中国北方一次沙尘天气过程的数值模拟

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	中国北方一次沙尘天气过程的数值模拟
其他题名	Numerical Modeling of a Dust Storm Process in Northern China
	康丽泰; 陈思宇
来源期刊	中国沙漠
ISSN	1000-694X
出版年	2017
卷号	37 期号:2 页码:321-331
中文摘要	选取中国北方地区2012年4月2224日的一次沙尘天气过程,综合分析了多种地面与卫星观测资料,并在此基础上采用WRF-Chem模式(Weather Research and Forecasting model coupled with Chemistry)对本次沙尘天气过程的起沙和传输进行数值模拟,并与卫星遥感、地面激光雷达等观测数据进行对比验证。结果表明:此次过程是由地面冷锋和高空短波槽共同作用引起的。WRF-Chem模式模拟结果较好再现了此次沙尘过程的时空分布特征, 与地面观测的沙尘天气发生地点基本一致。沙尘天气发生前后,地面观测站各气象要素有明显变化,表现出大风、降温、正变压。WRF-Chem模式模拟的气温和湿度变化趋势与观测基本一致。地面观测得到的PM_(10)质量浓度与消光系数在沙尘过程期间均上升达到高值,模拟能够很好地反映PM_(10)质量浓度的整体变化趋势,但峰值低于观测结果。采用HYSPLIT模式进行后向轨迹模拟,进一步表明本次沙尘过程的源地主要为塔克拉玛干沙漠与古尔班通古特沙漠。前向轨迹模拟结果表明沙尘传输路径自新疆起始,途经内蒙古、甘肃、宁夏、陕西。
英文摘要	A dust storm case during April 22-24,2012 was studied by analyzing muti-type ground-based observation and satellite observation data,and the WRF-Chem model(Weather Research and Forecasting model coupled with Chemistry)was used to simulate the emission and transport process of this dust storm,and the simulation result is verified by observation results including satellite and ground-based lidar data.The results show that this event is mainly caused by the surface cold front and the upper trough.The simulation result represents the spatial and temporal distribution of dust,which is in accord with the meteorological records at surface stations.Meteorological parameters observed at the surface station changed dramatically during this period,which is associated with strong wind,decreasing temperature and increasing pressure.Simulated surface temperature and humidity are generally in accord with the observation results.Observed PM_(10) mass concentration and extinction coefficient rose significantly during this period.Simulation results of these variables well represent the overall trend,while peak value is lower than the observation.This study also apply HYSPLIT model to simulate the backward trajectory of the dust,which further conform that dust are mainly originated from Taklimakan desert and Gurbantunggut desert.The forward trajectory simulation shows that dust was transported across Inner Mongolia,Gansu,Ningxia and Shanxi.
中文关键词	沙尘天气 ; WRF-Chem模式 ; 数值模拟
英文关键词	dust storm WRF-Chem model numerical simulation
语种	中文
国家	中国
收录类别	CSCD
WOS类目	METEOROLOGY ATMOSPHERIC SCIENCES
WOS研究方向	Meteorology & Atmospheric Sciences
CSCD记录号	CSCD:5980760
来源机构	兰州大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/237086
作者单位	兰州大学大气科学学院, 半干旱气候变化教育部重点实验室, 兰州, 甘肃 730000, 中国
推荐引用方式 GB/T 7714	康丽泰,陈思宇. 中国北方一次沙尘天气过程的数值模拟[J]. 兰州大学,2017,37(2):321-331.
APA	康丽泰,&陈思宇.(2017).中国北方一次沙尘天气过程的数值模拟.中国沙漠,37(2),321-331.
MLA	康丽泰,et al."中国北方一次沙尘天气过程的数值模拟".中国沙漠 37.2(2017):321-331.