多组分气溶胶活化及其对云和降水影响的数值研究

项目名称： 多组分气溶胶活化及其对云和降水影响的数值研究

项目编号： No.21207159

项目类型： 青年科学基金项目

立项/批准年度： 2013

项目学科： 环境化学

项目作者： 周春红

作者单位： 中国气象科学研究院

项目金额： 25万元

中文摘要： 在在线耦合了多组分分档气溶胶模式的天气模式中，研究不同的气溶胶组分排放进入大气，经过老化、相互作用之后，在不同的水汽条件下的活化机制。开发多粒径多组分的气溶胶活化成云凝结核（CCN）的参数化方案，为云物理过程提供动态的CCN谱，将气溶胶的三维分布及转化与云物理过程联系起来。通过研究动态CCN谱对云的微观特征、云中微物理过程以及降水的影响，深入理解多组分气溶胶活化与云以及中尺度天气的相互作用。同时研究气溶胶活化、与云相互作用反过来对与云和降水关系密切的气溶胶湿沉降过程的影响，提高气溶胶的模拟精度。

中文关键词： 气溶胶;云和降水相互作用；分档多组分气溶胶；气溶胶活化；GRAPES/CUACE；在线

英文摘要： Aerosols have an important effect on atmospheric chemistry throughout the troposphere and lower stratosphere. They influence the radiative budget of Earth directly and indirectly by the modification of the cloud droplet size spectrum and precipitation at the surface. Researchers are beginning to incorporate these effects into the most sophisticated weather and climate models for shallow clouds. This is because aerosol-cloud interactions are seen as one of the most important single forces that drive weather and climate change, but there are big uncertainties in the current understanding of these processes. One reason is that the aerosol model and cloud models have been paralleled developed for relatively long time. At presents, both are with very complex physics processes i.e. nucleation, condensation, coagulation and deposition etc., and so for the cloud physics which still have phase changes. To make things more difficult, there are different scale interactions from nanometers to thousand miles in terms of the aerosol effect on weather system, Let alone the climate models. So cloud physicists commonly classify the characteristics of aerosols and clouds into "maritime" and "continental" regimes, where "continental" has become synonymous with "aerosol-laden and polluted." But the fact is that there are huge varia

英文关键词： aerosol cloud interaction (ACI)；GRAPES/CUACE；onl-line；sectional activation；multi-ccomponent