干旱区生态环境知识资源中心(Arid): On the Observation of Sandstorms and Associated Episodes of Airborne Dustfalls in the East Asian Region in 2005

Arid

DOI	10.5467/JKESS.2009.30.2.196
	On the Observation of Sandstorms and Associated Episodes of Airborne Dustfalls in the East Asian Region in 2005
	Kim, Hak-Sung; Chung, Yong-Seung
通讯作者	Kim, HS
来源期刊	JOURNAL OF THE KOREAN EARTH SCIENCE SOCIETY
ISSN	1225-6692
EISSN	2287-4518
出版年	2009
卷号	30 期号:2 页码:196-209
英文摘要	Occurrences of sandstorms in the deserts and loess of Mongolia and northern China and associated dustfall episodes in the Korean Peninsula were monitored during the period January through December, 2005. False colour images were made by directly receiving the NOAA Advanced Very High Resolution Radiometer (AVHRR) data, and the distribution and transport of sandstorms were analyzed. The ground concentrations for PM10, PM2.5 and visibility of the dustfall episodes (PM10 concentration over 190 mu g m(-3)) were analyzed at Cheongwon, located midway in South Korea, and in the leeward direction of the place of origin of the sandstorms. Variations in the concentrations of O-3, NO2, CO and SO2 were also compared with dust concentrations in the dustfall episodes. Fewer occurrences of strong sandstorms in the place of origin were observed in 2005, due largely to the accumulation of snow and mild fluctuations of high and low pressure systems in the place of origin, thereby accounting for a low frequency of dustfall episodes in Korea, compared with those during the period 1997-2005. A total of 7 dustfall episodes were monitored in Korea in 2005 that lasted 11 days. In summer, sandstorms occurred less frequently in the source region in 2005 due to high humidity and milder winds, thereby causing no dustfall episodes in Korea. In case the sandstorms occurring at the place of source head directly to Korea without passing through large cities and industrial areas of China, the PM2.5 concentrations were measured at 20% or lower than the PM10 concentrations. However, when the sandstorms headed to Korea via the industrial areas of eastern China, where they pick up anthropogenic air pollutants, the PM2.5 concentrations were at least 25% higher of the PM10 concentrations. On the other hand, over 5 cases were observed and analyzed in 2005 where the PM10 concentrations of sand dust originating from the deserts were measured at 190 mu g m(-3) or lower, falling short of the level of a dustfall episode.
英文关键词	sandstorm dustfall NOAA satellite false colour image PM10 PM2.5 air pollutants
类型	Article
语种	其他
开放获取类型	Bronze
收录类别	ESCI
WOS记录号	WOS:000437593100005
WOS类目	Geosciences, Multidisciplinary
WOS研究方向	Geology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/329348
作者单位	[Kim, Hak-Sung] Korea Natl Univ Educ, Dept Earth Sci Educ, Cheongwon 363791, Choongbuk, South Korea; [Chung, Yong-Seung] Korea Ctr Atmospher Environm Res, Cheongwon 363891, Choongbuk, South Korea
推荐引用方式 GB/T 7714	Kim, Hak-Sung,Chung, Yong-Seung. On the Observation of Sandstorms and Associated Episodes of Airborne Dustfalls in the East Asian Region in 2005[J],2009,30(2):196-209.
APA	Kim, Hak-Sung,&Chung, Yong-Seung.(2009).On the Observation of Sandstorms and Associated Episodes of Airborne Dustfalls in the East Asian Region in 2005.JOURNAL OF THE KOREAN EARTH SCIENCE SOCIETY,30(2),196-209.
MLA	Kim, Hak-Sung,et al."On the Observation of Sandstorms and Associated Episodes of Airborne Dustfalls in the East Asian Region in 2005".JOURNAL OF THE KOREAN EARTH SCIENCE SOCIETY 30.2(2009):196-209.