CAREER: Theoretical and Modeling Study of Secondary Organic Aerosol Partitioning Behavior

这个职业项目的总体目标是建立一个研究和教育的综合计划，在这个计划中，将开发改进的大气气溶胶模型，并将其纳入工程课程。该项目的研究部分是对二次有机气溶胶的气体/气溶胶分配行为的调查，重点是温度影响。将利用理论预测和现有的实验数据，为区域空气质量模式中产生气溶胶的碳氢化合物确定适当的随温度变化的气溶胶分配参数。使用恒产气溶胶产量、吸收分配和依赖于温度的吸收分配的预测将被比较，以确定温度对环境有机气溶胶浓度的影响。这项研究中开发的方法将与EPA的Models3/CMAQ空气质量模拟系统结合使用，以模拟1999年南方氧化剂研究期间在美国东南部遇到的现场条件。

The overall goal of this CAREER project is to establish an integrated program of research and education in which improved atmospheric aerosol models will be developed and incorporated into engineering classes. The research component of this project is an investigation of the gas/aerosol partitioning behavior of secondary organic aerosols, with a focus on temperature effects. Theoretical predictions and available experimental data will be used to define appropriate temperature-dependent aerosol partitioning parameters for aerosol-producing hydrocarbons in regional air quality models. Predictions using constant yield aerosol production, absorptive partitioning, and temperature dependent absorption partitioning will be compared to determine the effect of temperature on ambient organic aerosol concentrations. The approach developed in this study will be used in conjunction with EPA's Models3/CMAQ air quality modeling system to simulate field conditions encountered in the Southeastern United States during the 1999 Southern Oxidant Study.