TY - JOUR
T1 - Analysis of aerosol composition at Cheju Island, Korea, using a two-bin gas-aerosol equilibrium model
AU - Hayami, Hiroshi
AU - Carmichael, Gregory R.
N1 - Funding Information:
Acknowledgements--This research was supported in part by NASA (grant no. NAGW-2428). Special thanks to Professor Min-Sun Hong and Dr Shang-Gyoo Shim for their assistance in obtaining the data. We appreciate Professor Anthony Wexler for sharing the SCAPE code and giving useful comments on the two-bin model and Dr Yong-Pyo Kim for helping us use the SCAPE model.
PY - 1997/10
Y1 - 1997/10
N2 - Aerosol chemical composition data measured at Cheju Island, Korea from March 1992 to December 1994 are analyzed with a gas-aerosol equilibrium model. The aerosol composition is divided into fine and coarse modes, with each mode assumed to be in equilibrium with the gas phase. The model represents the mean aerosol composition. The particulate ammonium is found to exist mostly in the fine mode to neutralize nss-sulfate, and the particulate nitrate and chloride are present mostly in the coarse mode and compete with each other to share sea salt and mineral cations. This means little formation of ammonium nitrate and chloride. Sensitivity analyses suggest that the aerosol in this region will be more deficit in chloride due to dechlorination and ammonium nitrate associated with the fine mode may become important.
AB - Aerosol chemical composition data measured at Cheju Island, Korea from March 1992 to December 1994 are analyzed with a gas-aerosol equilibrium model. The aerosol composition is divided into fine and coarse modes, with each mode assumed to be in equilibrium with the gas phase. The model represents the mean aerosol composition. The particulate ammonium is found to exist mostly in the fine mode to neutralize nss-sulfate, and the particulate nitrate and chloride are present mostly in the coarse mode and compete with each other to share sea salt and mineral cations. This means little formation of ammonium nitrate and chloride. Sensitivity analyses suggest that the aerosol in this region will be more deficit in chloride due to dechlorination and ammonium nitrate associated with the fine mode may become important.
KW - Aerosol chemical composition
KW - East Asia
KW - Partitioning
KW - Thermodynamic equilibrium
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U2 - 10.1016/S1352-2310(97)00103-9
DO - 10.1016/S1352-2310(97)00103-9
M3 - Article
AN - SCOPUS:0031259780
VL - 31
SP - 3429
EP - 3439
JO - Atmospheric Environment
JF - Atmospheric Environment
SN - 1352-2310
IS - 20
ER -