当前位置：
X-MOL 学术
›
Atmos. Res.
›
论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Dust storm susceptibility on different land surface types in arid and semiarid regions of northern China
Atmospheric Research ( IF 5.5 ) Pub Date : 2020-10-01 , DOI: 10.1016/j.atmosres.2020.105031 Yong Liu , Guangpeng Wang , Ziying Hu , Peijun Shi , Yanli Lyu , Guoming Zhang , Yu Gu , Yun Liu , Chang Hong , Lanlan Guo , Xia Hu , Yanyan Yang , Xiaoxiao Zhang , Hao Zheng , Lianyou Liu
Atmospheric Research ( IF 5.5 ) Pub Date : 2020-10-01 , DOI: 10.1016/j.atmosres.2020.105031 Yong Liu , Guangpeng Wang , Ziying Hu , Peijun Shi , Yanli Lyu , Guoming Zhang , Yu Gu , Yun Liu , Chang Hong , Lanlan Guo , Xia Hu , Yanyan Yang , Xiaoxiao Zhang , Hao Zheng , Lianyou Liu
Abstract Dust storm originates from arid and semiarid areas and could cause worldwide lasting effects along varying trajectories. As an extreme weather hazard, dust storm is usually induced by strong winds. In this paper, an aerodynamic parameter, defined as the ratio between dust storm frequency (DSF) and strong wind frequency (SWF), was calculated for quantifying dust storm susceptibility (DSS). The characteristic value and temporal change of DSS in five typical land surface areas, including cultivated land, grassland, sand desert, Gobi desert, and salt crust, were analyzed with dust storm and strong wind records at 15 weather stations. The spatial distribution of DSS in the arid and semiarid regions of northern China was described using dust storm and strong wind records at 102 meteorological stations. There are positive correlations between SWF and DSF for any identical land surface type. Land surface conditions have a great influence on dust storm susceptibility. According to DSS value, the five land surface types can be divided into two categories: (1) Cultivated land and sand desert, with DSS between 0.64 and 0.53, about 2.6–10 times higher than that of the other three land surfaces, are prone to forming dust storm under strong wind conditions; (2) Gobi desert, grassland and salt crust, with average DSS from 0.06 to 0.2, exhibit lower probability of dust storm occurrence under strong wind conditions. The DSF in the surrounding areas of the arid Taklimakan desert in Xinjiang are much larger than SWF, and dust storms take place readily even at normal erosive wind conditions. The areas with high DSF are not spatially consistent with SWF distribution but more coincide with high DSS areas where sand deserts and farmland are concentrated. In the nearly four past decades, the DSS showed an overall increasing trend on different ground surfaces which may be related to local human activities and climatic warming.
更新日期：2020-10-01
京公网安备 11010802027423号