Seasonal variation of aerosol composition at Cheju Island, Korea

Gregory R Carmichael; Yang Zhang; Li-Ling Chen; Min-Sun Hong; Hiromasa Ueda

doi:10.1016/1352-2310(95)00230-8

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Seasonal variation of aerosol composition at Cheju Island, Korea

Journal article

Peer reviewed

Seasonal variation of aerosol composition at Cheju Island, Korea

Gregory R Carmichael, Yang Zhang, Li-Ling Chen, Min-Sun Hong and Hiromasa Ueda

Atmospheric environment (1994), Vol.30(13), pp.2407-2416

1996

DOI: 10.1016/1352-2310(95)00230-8

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Abstract

A preliminary assessment of the seasonal variation in chemical composition of aerosols measured at Cheju Island, Korea, is presented. Weekly and monthly averaged aerosol composition derived from 15 months of daily filter measurements are presented. The annual-average non-sea-salt sulfate and nitrate mass concentrations of aerosols measured at Cheju are found to be 6.9 μg m −3 and 1.2 μg m −3, respectively; calcium and potassium are present in nearly equal quantities at ∼ 0.5 μgm-3, and ammonium averaged 1.4 μg m −3. Each species is found to follow a seasonal cycle with sulfate, nitrate, ammonium, potassium and calcium all showing up to 50% higher values in the spring. In contrast, chlorine is 30% lower in the spring. Aerosol enrichment factors relative to the composition of seawater and crustal material from the Gobi dust-source region in China are also presented. The aerosol measured at Cheju is found to be enriched in sulfate, nitrate and ammonium, but deficient in chlorine (relative to seawater). These results along with modeling studies suggest that the dust surfaces play an important role in nitrate and sulfate formation.

Aerosols

enrichment factors

aerosol modelin

dust

Details

Title: Subtitle: Seasonal variation of aerosol composition at Cheju Island, Korea
Creators: Gregory R Carmichael - Center for Global and Regional Environmental Research and Department of Chemical and Biochemical Engineering, University of Iowa, U.S.A
Yang Zhang - Center for Global and Regional Environmental Research and Department of Chemical and Biochemical Engineering, University of Iowa, U.S.A
Li-Ling Chen - Center for Global and Regional Environmental Research and Department of Chemical and Biochemical Engineering, University of Iowa, U.S.A
Min-Sun Hong - Department of Environmental Engineering, Ajou University, Korea
Hiromasa Ueda - Department of Applied Mechanics, Kyushu University, Japan
Resource Type: Journal article
Publication Details: Atmospheric environment (1994), Vol.30(13), pp.2407-2416
DOI: 10.1016/1352-2310(95)00230-8
ISSN: 1352-2310
eISSN: 1873-2844
Publisher: Elsevier Ltd
Language: English
Date published: 1996
Academic Unit: Civil and Environmental Engineering; Nursing; Chemical and Biochemical Engineering
Record Identifier: 9984003942102771

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