Effects of Clouds on Aerosol Production and Distribution

小行星9305684 这项研究的目的是发展一个更好的了解云和云过程对气溶胶输送和转换在本地和全球尺度上的重要性。 将利用二维欧拉云域模型研究深对流对对流层气溶胶分布和生成的影响，特别注意对流层上部。 气体和云相化学的描述将与混合相准显式微观物理相结合。 这一新的气溶胶形成和演变模式将被用来研究化学和传输对气溶胶数量和尺寸浓度的影响。 从这一初步工作，参数化使用的NCAR社区气候模式（CCM 2）将开发。 气溶胶光学厚度的气候模式运行，然后将与现有的卫星测量进行比较，特别是为了了解云的作用，在季节和纬度变化的属性。 这项工作将有助于更好地了解云的影响程度，并将有助于预测由于气溶胶分布、人为排放或云的类型和数量的变化而可能产生的全球影响。

9305684 Kreidenweis This study is aimed at development of an improved understanding of the importance of clouds and cloud processes upon aerosol transport and transformations on both the local and global scales. A two-dimensional Eulerian cloud domain model study of the impact of deep convection on tropospheric aerosol distribution and production, with particular attention to the upper troposphere, will be performed. Descriptions of gas- and cloud-phase chemistry will be coupled with mixed-phased quasi-explicit microphysics. This new model of aerosol formation and evolution will be employed to study the effects of chemistry and transport upon aerosol number and size concentrations. From this initial work, a parameterization for use with the NCAR Community Climate Model (CCM2) will be developed. Aerosol optical depths from the climate model runs will then be compared with available satellite measurements, with a particular view toward understanding the role of clouds in seasonal and latitudinal variations on this property. This work will lead to improved understanding of the magnitudes of cloud effects, and will assist in the prediction of global effects that may occur due to changes in aerosol distributions, anthropogenic emissions or in cloud type and amounts.