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

物理化学处理对矿物粉尘气溶胶光学性质影响的实验室研究

• 批准号: 0425989
• 负责人: Paul Kleiber
• 金额: $ 48.82万
• 依托单位: University of Iowa
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2004
• 资助国家: 美国
• 起止时间: 2004-09-01 至 2008-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0425989&HistoricalAwards=false
• 关键词: Laboratory; Studies; Impact; Physicochemical; Processing

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.

该项目是一项实验室调查，研究大气老化对矿物尘埃颗粒成分的光学特性的影响，这些光学特性是光谱波长、颗粒大小、形状和成分的函数。 将测量波长为0.3至15微米的各类矿物粉尘（包括金属氧化物、碳酸盐和粘土）对光的吸收和散射。 这些粒子将暴露在各种物理和化学过程中，这些过程旨在模拟大气中发生的过程。 对新鲜和老化粒子进行光-粒子相互作用的理论处理，以导出可用于实际大气矿物尘气溶胶的公式，这一基础信息将提高对矿物尘对地球大气辐射收支影响的认识。 这可以更好地预测扰动对地球气候系统的影响。 该项目将有显着的学生参与，包括研究生和博士后研究员的直接支持。