不同云滴数浓度参数化方案对硝酸盐气溶胶 第一间接效应影响的比较研究

在区域气候化学模式系统（RegCCMS）中，分别采用Hegg、Hansen、Ghan、Jones等4种云滴数浓度参数化方案，模拟研究了2003年10月硝酸盐气溶胶的浓度分布和第一间接气候效应，并对不同方案进行比较。结果表明，不同方案模拟的硝酸盐气溶胶分布大体上一致，主要集中在河南、山东、河北、四川等地，地面浓度最大值达18 μg/m3。Hegg、Hansen、Ghan、Jones等 4种云滴数浓度参数化方案计算得到的由硝酸盐气溶胶所造成的第一间接辐射强迫全国平均值分别为-148、-205、-161和-140 W/m2。4种方案模拟的硝酸盐气溶胶间接效应都表现为近地面气温下降，降水减少，其中Hansen方案的间接效应最强，Ghan、Hegg方案次之，Jones方案最弱。

Comparative study on parameterization schemes for cloud droplet number on first indirect climatic effect of nitrate aerosol

Four parameterization schemes for cloud droplet number concentration are introduced in the regional climate chemistry model system(RegCCMS)to investigate spatial distribution of nitrate aerosol as well as its indirect climatic effect over China in October 2003,and the differences of parameterization schemes were compared.Investigations show that the distributions of nitrate of different parameterization schemes are consistent generally.The surface concentration of nitrate aerosol is relatively high over Hen...