CCN in ACE-1

ACE-1 中的 CCN

• 批准号: 9419263
• 负责人: James Hudson
• 金额: $ 18.23万
• 依托单位: Nevada System of Higher Education, Desert Research Institute
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1995
• 资助国家: 美国
• 起止时间: 1995-09-01 至 1998-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9419263&HistoricalAwards=false
• 关键词: CCN; ACE

9419263 Hudson This project is part of the Southern Hemisphere Marine Aerosol Characterization Experiment (ACE-1), which will be conducted in the remote Southern Pacific in 1995 using aircraft, ship-board, and ground-based measurements of a wide variety of chemical species, physical and meteorological parameters with the central goal of investigating the formation, evolution, and optical properties of atmospheric aerosol. In this component, cloud condensation nuclei will be measured onboard the NCAR C-130 aircraft, as well as at the ground in Cape Grim, Tasmania. These CCN measurements constitute one of the central objectives of the ACE-1 project, and provide a link between atmospheric chemistry and cloud research. The continuous airborne CCN measurements can be used to gauge the indirect aerosol effect, i.e. the suggested increase in cloud stability due to increased CCN concentrations. CCN spectra will be compared with physical and chemical aerosol characterizations to determine if CCN spectra can be predicted from chemical and physical properties of the aerosol. This is important for aerosol modeling, climate modeling, and determinations of the origin of atmospheric aerosol. Comparisons between CCN and cloud droplets provide the opportunity to separate macrophysical and microphysical cloud properties and to distinguish between the effects of cloud dynamics and the effects of the physics and chemistry of the aerosol. The ACE-1 data will constitute an extension of other CCN and cloud droplet data bases with the ultimate goal of understanding the role of aerosols in the global cloud systems.

小行星9419263哈德逊 这个项目是南半球海洋浮质特性试验的一部分，该试验将于1995年在遥远的南太平洋进行，利用飞机、船上和地面测量各种化学物质、物理和气象参数，其中心目标是调查大气浮质的形成、演变和光学特性。在这一部分中，云凝结核将在NCAR C-130飞机上以及塔斯马尼亚州格里姆角的地面上进行测量。这些云凝结核的测量构成了ACE-1项目的中心目标之一，并提供了大气化学和云研究之间的联系。 连续的空中云凝结核测量可以用来测量间接的气溶胶效应，即云凝结核浓度增加所引起的云稳定性的增加。云凝结核光谱将与气溶胶的物理和化学特性进行比较，以确定是否可以从气溶胶的化学和物理特性预测云凝结核光谱。这对于气溶胶模拟、气候模拟和确定大气气溶胶的来源是重要的。云凝结核和云滴之间的比较提供了分离云的宏观物理和微观物理特性的机会，并区分云动力学的影响和气溶胶的物理和化学的影响。ACE-1数据将构成其他云凝结核和云滴数据库的延伸，最终目标是了解气溶胶在全球云系统中的作用。