Size- and Composition-Resolved Externally Mixed Aerosol Model
Size- and Composition-Resolved Externally Mixed Aerosol Model
复制标题
尺寸和成分解析的外部混合气溶胶模型
DOI：
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发表时间：
1998
期刊：
影响因子：
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通讯作者：
J. Seinfeld
中科院分区：
文献类型：
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作者：
L. Russell;J. Seinfeld
需要一种数值算法来预测气溶胶种群的外部混合物的增长，这在当前的几个研究领域是常见的，包括气溶胶辐射效应、粒子产生过程和污染源分配。这项工作描述了一个模型，解决了这一问题，明确的外部和内部混合物的凝固，凝结，沉积，活化和成核过程。由于溶质生长的双矩截面法，该解决方案在数值上准确地反映了颗粒质量和数量守恒。此外，在移动截面中计算可蒸发组分，以便在过饱和条件下颗粒激活期间保留信息。应用该模型对有层云覆盖的海洋边界层的云处理问题进行了说明。气溶胶种群在边界层内循环的气团中并穿过云层。边界层结构…
ABSTRACT The need for a numerical algorithm to predict the growth of external mixtures of aerosol populations is common to several current areas of study, including aerosol radiative effects, particle production processes, and pollution source apportionment. This work describes a model that solves this problem for explicit external and internal mixtures for the processes of coagulation, condensation, deposition, activation, and nucleation. The solution is numerically accurate for both particulate mass and number conservation by virtue of a dual-moment sectional method for solute growth. In addition, evaporable components are calculated in moving sections to retain information during particle activation in supersaturated conditions. The model is illustrated by application to the problem of cloud processing in a marine boundary layer capped with a layer of stratus clouds. The aerosol population is tracked in an air parcel circulating within the boundary layer and through the cloud layer. Boundary layer stru...