Lidar measurements of Asian dust storms and dust cloud interactions

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Title:	Lidar measurements of Asian dust storms and dust cloud interactions
Authors:	Nee, Jan B.;Chiang, Chih-Wei;Hu, Huan-ling;Hu, Shun-xing;Yu, Jia-Yuh
Contributors:	大氣系
Date:	2007
Issue Date:	2009-11-13 11:59:24 (UTC+8)
Abstract:	[1] Long-range transport of Asian dust storms has been investigated by using lidar at Chungli ( 24.6 degrees N, 121.1 degrees E) in 2002 - 2004. One of the dust storms that occurred in the period of 27 - 31 March 2002 was also observed by lidar at Hefei (31.9 degrees N, 117.16 degrees E). The lidar height distributions of dust extinction were compared with back trajectory calculation and atmospheric data including First Global GARP Experiment ( FGGE)-type ground observations and National Center for Environment Prediction/ Atmospheric Research (NCEP/ NCAR) reanalysis. Dust layers had an average total (aerosol and molecular) depolarization ratio (DR) about 0.2; however, formation of droplets with near- zero depolarization ratio (0.02) was also measured. The cloud condensation nuclei (CCN) activities of dust particles were considered based on chemical properties observed from the ground. We observed that dust transport to the south may interact strongly with the moisture from the active weather system in the region producing significant climate effects.
Relation:	JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES Volume: 112 Issue: D15 Article Number: D15202
Appears in Collections:	[Department of Atmospheric Sciences & Graduate Institute of Earth Science / Atmospheric Science ] journal articles

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