J Korean Med Assoc.  2004 May;47(5):453-464. 10.5124/jkma.2004.47.5.453.

Physical and Chemical Characteristics of Asian Dust

• Kim MY

• KMID: 2137881
• DOI: http://doi.org/10.5124/jkma.2004.47.5.453

Abstract

The frequency record of sand storm occurrence in spring season has been renewed continuously along with its intensity and extended duration from the year 2000 to 2002 period. The airborne sand transported from long distance practically reduces visibility and influences atmospheric radiation energy balance. It can further affect the ecological system through the deposition on the earth's surface while offering the buffer effect to acid substance, because of its alkali content such as calcium. It is known that no chemical reaction proceeds between elemental components contained in transporting particles during sand storm period. The elements originating from soil sources and some cations increased with the occurrence of sand storm. However the elements of anthropogenic origin(Pb, Se and Zn) and anions(NH4- and N03-) decreased, possibly because of the dilution effect by the strong air flow from westward direction.

Keyword

Sand storm; Visibility; Ecological system; Anthropogenic

MeSH Terms

Alkalies
Asian Continental Ancestry Group*
Calcium
Cations
Dust*
Ecosystem
Humans
Seasons
Silicon Dioxide
Soil
Alkalies
Calcium
Cations
Dust
Silicon Dioxide
Soil

Figure

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  Figure 1

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  Figure 2

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