Aerosol Light Scattering and Related Properties at Climate Sensitive Sites (ACE-2)

9610051本项目的主要目标是提供可靠的实验和模拟结果，描述环境气溶胶的光散射特性和组成。该项目是北大西洋区域气溶胶特性实验(ACE-2)的一部分，该实验将于1997年6月和7月在亚热带东北大西洋上空进行，作为一项国际合作努力。ACE-2的主要目标是利用飞机、船载和地面测量来研究与辐射强迫和气候有关的大气气溶胶的特性。将在葡萄牙萨格雷斯的一个地面站使用现场快速反应气溶胶采样仪器进行为期六周的测量。气溶胶的光散射特性将通过由伊利诺伊大学工作人员执行的受控相对湿度散射比浊法获得。来自华盛顿大学西雅图沙漠研究所和莱比锡对流层研究所的合作者将进行气溶胶颗粒组成、气溶胶颗粒尺寸分布和吸湿性生长测量。与迈阿密大学C.Pilinis博士合作，将使用最近开发的热力学模型对现场颗粒测量和气溶胶成分进行进一步分析。将结合测量和模型来描述环境气溶胶的光散射系数及其与受控相对湿度、光波长、光散射方向和颗粒组成的关系。

9610051 Rood The primary objective of this project is to provide reliable experimental and modeled results describing the ambient aerosols' light scattering properties and composition. This project is part of the North Atlantic Regional Aerosol Characterization Experiment (ACE-2) which will be conducted in June and July, 1997, over the subtropical Northeastern Atlantic Ocean as an international collaborative effort. The main objectives of ACE-2 are to study the properties of atmospheric aerosols relevant to radiative forcing and climate using aircraft, ship-board, and ground-based measurements. Measurements will be performed with in-situ rapid response aerosol sampling instrumentation for a six-week period at a ground-based station at Sagres, Portugal. Aerosol light scattering properties will be obtained with controlled relative humidity nephelometry performed by University of Illinois personnel. Aerosol particle composition, aerosol particle size distribution, and hygroscopic growth measurements will be performed by collaborators from the Desert Research Institute, University of Washington, Seattle, and Institute of Tropospheric Research, Leipzig. Further analyses of the in-situ particle measurements and aerosol composition will be performed with recently developed thermodynamic models in collaboration with Dr. C. Pilinis, University of Miami. Measurements and models will be integrated to describe the ambient aerosol's light scattering coefficients and their dependence on controlled relative humidity, wavelength of light, direction of light scattered, and particle composition.