Article ID Journal Published Year Pages File Type
4444658 Atmospheric Environment 2006 11 Pages PDF
Abstract

Measurements of the aerosol hygroscopic growth factor, f(RH), and the physical and optical properties of aerosols were made at Gosan, Korea during the aerosol characterization experiment (ACE)-Asia 2001 field campaign (April 2001). The optical and hygroscopic properties of aerosols were characterized in terms of the air mass transport pathways. During the Asian dust period, σsp and σap were remarkably elevated with mean and standard deviation of 238.6±55.3 Mm−1 and 24.2±10.9 Mm−1, respectively. The mean f(RH) for the pollution aerosols from Chinese sectors (2.75±0.38) in this study was much higher than that for the anthropogenic aerosols in Europe during ACE-2 (1.46±0.10) as well as that of the urban/industrial aerosols of the US east coast during TARFOX (1.81±0.37–2.30±0.24). The mean f  (RH) during the smoke period (1.60±0.20) was comparable to that during INDOEX (1.58±0.21), and higher than that for SCAR-B in Brazil (1.16). We found a negative correlation (r=0.81r=0.81) between f(RH) and OC concentration. This negative correlation suggests that organic aerosols have a strong influence on the smoke aerosol hygroscopicity.

Related Topics
Physical Sciences and Engineering Earth and Planetary Sciences Atmospheric Science
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