Laboratory Studies of the Impact of Physicochemical Processing on the Optical Properties of Mineral Dust Aerosol

本项目是一个实验室内研究大气老化对矿物粉尘颗粒组分光学性质的影响，如光谱波长、粒度、形状和组成的函数。包括金属氧化物、碳酸盐和粘土在内的各种矿物粉尘对光的吸收和散射将在0.3至15微米的波长范围内进行测量。这些颗粒将暴露在各种物理和化学过程中，这些过程是为了模拟大气中发生的过程而设计的。光粒子相互作用的理论处理将应用于新鲜和老化的粒子，以努力推导出可用于实际大气矿物粉尘气溶胶的公式。这一基本信息将增进对矿物粉尘对地球大气辐射收支影响的了解。这可以更好地预测扰动对地球气候系统的影响。该项目将有大量的学生参与，包括研究生和博士后的直接支持。

This project is an experimental laboratory investigation of the impacts of atmospheric aging on the optical properties of components of mineral dust particles as functions of spectral wavelength, particle size, shape and composition. The absorption and scattering of light by various classes of mineral dust including metal oxides, carbonates, and clays will be measured for wavelengths from 0.3 to 15 micrometers. The particles will be exposed to various physical and chemical processes designed to simulate those occurring in the atmosphere. Theoretical treatments of light-particle interactions will be employed to the fresh and aged particles in an effort to derive formulas that can be used for actual atmospheric mineral dust aerosol.This fundamental information will improve the understanding of the impact of mineral dust on the radiation budget of the earth's atmosphere. This can lead to better predictions of the impacts of perturbations to the earth's climate system. This project will have significant student involvement, including direct support of a graduate student and postdoctoral fellow.