RAPID: Sea Spray Aerosol Production over the North Atlantic

该项目支持在NASA资助的北大西洋气溶胶和海洋生态系统研究（NAAMES）期间部署额外的仪器。 这项研究的重点是表征海洋浮游生物生态系统的属性和年度水华周期，并调查远程海洋气溶胶和边界层云是如何受到浮游生物生态系统的影响。这项研究将有助于确定是浮游植物水华状态还是海洋中溶解有机碳的大量储存导致了海面气溶胶的有机富集。这些结果对于精确模拟海洋和大气之间的碳交换以及了解其对气候的影响非常重要。海洋扫描是一种现场海面气溶胶（SSA）发生器，将在NAAMES的前两次巡航中部署（2015年11月和2016年5月/6月），以描述表层海水生物活动对海洋环境的物理、化学、新发射的SSA的光学和云成核特性。研究人员假设，浮游植物水华状态是不是占主导地位的控制在新鲜排放的SSA的有机部分的大小。 相反，他假设，海洋中溶解的有机碳的大水库是负责有机富集的SSA. NAAMES项目提供了一个极好的机会来测量新鲜排放的SSA和评估海水参数，影响其流量的海洋，成分，并在海洋大气中的云和化学的影响。

This project supports the deployment of additional instrumentation during the NASA-funded North Atlantic Aerosols and Marine Ecosystems Study (NAAMES). This study is focused on characterizing the properties and annual bloom cycles of marine plankton ecosystems, and on investigating how remote marine aerosols and boundary layer clouds are influenced by plankton ecosystems. This research will help determine whether it is the phytoplankton bloom state or the large reservoir of dissolved organic carbon in the ocean that is responsible for the organic enrichment of sea-surface aerosol. The results are important for accurately modeling the exchange of carbon between the oceans and the atmosphere and for understanding its influence on climate.The Sea Sweep, an in-situ sea-surface aerosol (SSA) generator, will be deployed on the first two NAAMES cruises (November of 2015 and May/June 2016) to characterize the effects of surface seawater biological activity on the physical, chemical, optical and cloud nucleating properties of freshly emitted SSA. The investigator hypothesizes that the phytoplankton bloom state is not the dominant control over the magnitude of the organic fraction in freshly emitted SSA. Instead, he hypothesizes that the large reservoir of dissolved organic carbon in the ocean is responsible for the organic enrichment of SSA.The NAAMES project provides an excellent immediate opportunity to measure freshly emitted SSA and to assess the seawater parameters that affect its flux out of the ocean, composition, and impacts on clouds and chemistry in the marine atmosphere.