Measurement of Aerosol Chemical, Physical, and Radiative Properties Related to Direct Climate Forcing in China

中国与直接气候强迫相关的气溶胶化学、物理和辐射特性的测量

• 批准号: 0080325
• 负责人: Michael Bergin
• 金额: $ 8.24万
• 依托单位: Georgia Tech Research Corporation
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2001
• 资助国家: 美国
• 起止时间: 2001-04-01 至 2003-03-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0080325&HistoricalAwards=false
• 关键词: Measurement; Aerosol; Chemical; Physical; Radiative

This project is part of the ACE-Asia Program (Aerosol Characterization Experiment). A variety of aerosol optical properties will be measured at a ground site in Shaanxi Province, China, which is located in the vicinity of major dust sources. The measurement period will coincide with the intensive observing period of the airborne field program downwind of Northern China, thus providing valuable information on aerosol properties in an important source region. The PI will measure aerosol light scattering and determine absorption coefficients. Aerosol samples in the less than 2.5 micron size fraction will also be analyzed for mass, major ionic, and elemental and organic carbon concentrations. These measurements will make it possible to determine the relative contributions of dust and anthropogenic aerosols to aerosol extinction in this region. The PI will also measure the wavelength dependent aerosol optical depth, total column water vapor and ozone during clear-sky conditions, and photosynthetically active radiation. These measurements will provide information on the relationship between dust loading and direct climate forcing.

该项目是ACE-Asia方案(气溶胶特性实验)的一部分。各种气溶胶光学性质将在陕西省中国地面站点进行测量，该站点位于主要沙尘源附近。测量期间将与中国北部下风向气载场计划的密集观测期重合，从而提供关于一个重要源区气溶胶性质的有价值的信息。PI将测量气溶胶的光散射并确定吸收系数。小于2.5微米的气溶胶样品也将被分析质量、主要离子、元素和有机碳浓度。这些测量将有可能确定尘埃和人为气溶胶对该区域气溶胶消光的相对贡献。PI还将测量与波长相关的气溶胶光学厚度、晴天条件下的总柱水蒸气和臭氧以及光合作用有效辐射。这些测量将提供有关沙尘负荷和直接气候强迫之间的关系的信息。