HR: 0800h
AN: A11B-0376    [Abstracts]
TI: Dust Storm over Eastern Asia during PACDEX 2007
AU: * ZHAO, Q
EM: zhaoqy_gs@126.com
AF: Center of Lanzhou Meteorological Observatory, Donggang East Road 2070, Lanzhou, 730020, China
AU: ZHANG, W
EM: wzhang@lzu.edu.cn
AF: College of Atmospheric Sciences, Lanzhou University, Tianshui South Road 222, Lanzhou, 730000, China
AU: HUANG, J
EM: hjp@lzu.edu.cn
AF: College of Atmospheric Sciences, Lanzhou University, Tianshui South Road 222, Lanzhou, 730000, China
AU: CHANG, Z
EM: changzhl05@lzu.cn
AF: College of Atmospheric Sciences, Lanzhou University, Tianshui South Road 222, Lanzhou, 730000, China
AB: Dust storm cases are analyzed based on surface observed data for the period of PACDEX 2007. There were 10 largeˇ§Cscale dust storms, 6 cases occurred in Mongolia and 4 cases in Taklimakan desert (Tarim Basin). The incidence of these dust storms spread to Mongolia, the Northern China, Yellow Sea, Peninsular of Korea, Southern Japan and the Pacific Ocean over southeast Japan. Three sources of dust outbreak are found, i.e., Western Mongolia, middle region of Mongolia and Taklimakan desert. The Northwest path, on which the dust storm moved to the Pacific Ocean over southeast Japan, and the West path, on which the dust storm affected only on local area, are two major transfer paths. Most Taklimakan dust storms only affect on the region of desert. But, the Mongolia dust storms are serious one, and the intensity varied during the process of movement. Developing cyclones is the major synoptic systems for caused Mongolia dust storm. Those dust storms can be enhanced when the cyclone developed to a deeper front cyclone, and moved toward south-east led by upper jet flow. The dust storm in Taklimakan desert was induced by cold high, with cold air moving into Tarim Basin from its east gate or climbed over Tianshan Mountain and rushed down to the basin.
DE: 3364 Synoptic-scale meteorology
SC: Atmospheric Sciences [A]
MN: 2007 Fall Meeting