A parameterization for the light scattering enhancement factor with aerosol chemical compositions
A parameterization for the light scattering enhancement factor with aerosol chemical compositions
复制标题
气溶胶化学成分光散射增强因子的参数化
DOI：
10.1016/j.atmosenv.2018.08.016
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发表时间：
2018-10
影响因子：
5
通讯作者：
Xu Wanyun
中科院分区：
文献类型：
--
作者：
Yu Yingli;Zhao Chunsheng;Kuang Ye;Tao Jiangchuan;Zhao Gang;Shen Chuanyang;Xu Wanyun
The light scattering enhancement factor f (RH), defined as the ratio of the light scattering coefficient (σ S P) observed under an elevated relative humidity (RH) conditions to that under dry conditions, is a crucial parameter for estimating aerosol direct radiative effects and atmospheric visibility. In this paper, a new f (RH) parameterization scheme considering both the influence of aerosol chemical compositions and that of particle number size distribution (PNSD) is proposed based on in situ measurements in the North China Plain. The development of this parameterization scheme includes three steps. First, aerosol hygroscopicity parameter κ is parameterized with aerosol chemical compositions. Then, the ratio between f (RH) fitted parameter κ s c a (f (R H)= 1+ κ s c a R H 100− R H) and κ is introduced to correlate f (RH) with κ. The ratio, influenced mostly by PNSD, is described as a function of scattering Ångström exponent (SAE) because the SAE can represent the predominant size of aerosol particles to some extent. Finally, f (RH) cycle is parameterized with κ s c a. Validation results show that a good consistency between the parameterized and measured f (RH= 80%) is achieved and the correlation coefficient is 0.80. This parameterization scheme between aerosol chemistry and f (RH) can be used in chemical transport models for reducing uncertainties in estimations of direct aerosol radiative forcing and air quality assessments.
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影响因子：
5
作者：
G. Hänel
通讯作者：
G. Hänel
DOI：
10.3402/tellusb.v66.24536
发表时间：
2014-01
期刊：
Tellus B: Chemical and Physical Meteorology
影响因子：
--
作者：
G. Titos;H. Lyamani;A. Cazorla;M. Sorribas;I. Foyo-Moreno;A. Wiedensohler;L. Alados-Arboledas
通讯作者：
G. Titos;H. Lyamani;A. Cazorla;M. Sorribas;I. Foyo-Moreno;A. Wiedensohler;L. Alados-Arboledas
影响因子：
9.8
作者：
Li, Mengren;Hu, Min;Guo, Song
通讯作者：
Guo, Song
影响因子：
--
作者：
STOKES, RH;ROBINSON, RA
通讯作者：
ROBINSON, RA
影响因子：
6.3
作者：
J. Chen;S. Budisulistiorini;Masayuki Itoh;Wen‐Chien Lee;T. Miyakawa;Y. Komazaki;Liudongqing Yang;M. Kuwata
通讯作者：
J. Chen;S. Budisulistiorini;Masayuki Itoh;Wen‐Chien Lee;T. Miyakawa;Y. Komazaki;Liudongqing Yang;M. Kuwata