VOCALS: Airborne Measurements of Aerosol Dynamics and Evolution

VOCALS：气溶胶动力学和演化的机载测量

• 批准号: 0745368
• 负责人: Antony Clarke
• 金额: $ 65.35万
• 依托单位: University of Hawaii
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2008
• 资助国家: 美国
• 起止时间: 2008-03-01 至 2014-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0745368&HistoricalAwards=false
• 关键词: VOCALS; Airborne; Measurements; Aerosol; Dynamics

During the VOCALS (VAMOS Ocean-Cloud-Atmosphere-Land Study) experiment, a suite of instruments will be deployed on the NSF/NCAR C-130 aircraft to measure a wide variety of aerosol properties: number, volatility, size distributions from 10 nm to 10 um in diameter, size-resolved aerosol composition, mixing state, and optical properties at low and ambient humidities. The data will be used to determine the origin of aerosol particles (from the sea surface, the free troposphere, or formed in situ), their suitability as cloud condensation nuclei (CCN), the mechanisms that control particle and CCN concentrations in pockets of open cells (POCs) and the VOCALS region, and their related optical properties. These measurements will help answer several of the hypotheses proposed in the overall VOCALS plan, including the role of aerosol properties in cloud and drizzle formation, scavenging, POC formation and the relationship between aerosol sources and cloud properties. Close collaborations will be established with other aerosol scientists on the C-130 and other platforms during VOCALS, as well as with cloud physicists, meteorologists and remote sensing specialists.The data should lead to improved understanding of the processes controlling aerosol effects on the radiative balance and climate in regions with extensive stratocumulus cloud cover. This will enable modelers to better parameterize those processes and will also help in understanding the impacts of large anthropogenic sulfur dioxide (SO2) and aerosol sources along the coast of Chile. The results could potentially be applied to the study of CCN evolution and the aerosol indirect effects on cloud properties. One graduate student will be involved in the experiment and data analysis.

在 VOCALS（VAMOS 海洋-云-大气-陆地研究）实验期间，NSF/NCAR C-130 飞机上将部署一套仪器来测量各种气溶胶特性：数量、挥发性、直径从 10 nm 到 10 um 的尺寸分布、尺寸解析的气溶胶成分、混合状态以及低湿度和环境湿度下的光学特性。 这些数据将用于确定气溶胶颗粒的来源（来自海面、自由对流层或原位形成）、它们作为云凝结核 (CCN) 的适用性、控制开放单元袋 (POC) 和 VOCALS 区域中颗粒和 CCN 浓度的机制，以及它们相关的光学特性。 这些测量将有助于回答总体 VOCALS 计划中提出的几个假设，包括气溶胶特性在云和毛毛雨形成、清除、POC 形成中的作用以及气溶胶来源和云特性之间的关系。 在 VOCALS 期间，我们将与 C-130 和其他平台上的其他气溶胶科学家以及云物理学家、气象学家和遥感专家建立密切合作。这些数据应有助于更好地了解控制气溶胶对广泛层积云覆盖区域的辐射平衡和气候影响的过程。 这将使建模者能够更好地对这些过程进行参数化，还将有助于了解智利沿海大量人为二氧化硫 (SO2) 和气溶胶来源的影响。 研究结果有可能应用于 CCN 演化和气溶胶对云特性的间接影响的研究。 一名研究生将参与实验和数据分析。