TY - JOUR
T1 - Development and evaluation of an expression for polydisperse particle scavenging coefficient for the below-cloud scavenging as a function of rain intensity using the moment method
AU - Bae, Soo Ya
AU - Jung, Chang Hoon
AU - Pyo Kim, Yong
N1 - Funding Information:
This study was carried out with the supports from the Climate Environment System Research Center, an SRC program funded by Korea Science and Engineering Foundation, Korea. C. H. Jung was supported by the 2005 academic research funds of Kyungin Women's College.
PY - 2006/11
Y1 - 2006/11
N2 - An analytical expression for wet scavenging coefficient for below-cloud scavenging that is function of collision efficiency, raindrop terminal velocity, raindrop size distribution, and particle size distribution is obtained and tested. The parameters of raindrop size distribution are related with rain intensity since rain intensity can be easily measured. Then, the moment method is applied to the expression for scavenging coefficient to derive an analytical expression. Two widely used raindrop size distribution, Marshall-Palmer and lognormal distributions are considered and lognormal particle size distribution is assumed. The derived scavenging coefficient expression is applied to three model environments, urban, rural, and desert to demonstrate its applicability.
AB - An analytical expression for wet scavenging coefficient for below-cloud scavenging that is function of collision efficiency, raindrop terminal velocity, raindrop size distribution, and particle size distribution is obtained and tested. The parameters of raindrop size distribution are related with rain intensity since rain intensity can be easily measured. Then, the moment method is applied to the expression for scavenging coefficient to derive an analytical expression. Two widely used raindrop size distribution, Marshall-Palmer and lognormal distributions are considered and lognormal particle size distribution is assumed. The derived scavenging coefficient expression is applied to three model environments, urban, rural, and desert to demonstrate its applicability.
KW - Moment method
KW - Particle size distribution
KW - Rain intensity
KW - Raindrop size distribution
KW - Scavenging coefficient
UR - http://www.scopus.com/inward/record.url?scp=33751002993&partnerID=8YFLogxK
U2 - 10.1016/j.jaerosci.2006.02.003
DO - 10.1016/j.jaerosci.2006.02.003
M3 - Article
AN - SCOPUS:33751002993
SN - 0021-8502
VL - 37
SP - 1507
EP - 1519
JO - Journal of Aerosol Science
JF - Journal of Aerosol Science
IS - 11
ER -