Measurement of OVOCs, NMHCs, and Halocarbons Aboard the NSF-GV Aircraft during CONTRAST (CONvective TRansport of Active Species in the Tropics)

对比期间 NSF-GV 飞机上的 OVOC、NMHC 和卤化碳的测量（热带地区活性物质的对流传输）

• 批准号: 1261942
• 负责人: Peter Swart
• 金额: $ 34.97万
• 依托单位: University of Miami
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2013
• 资助国家: 美国
• 起止时间: 2013-08-01 至 2017-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1261942&HistoricalAwards=false
• 关键词: Measurement; OVOCs; NMHCs; Halocarbons; Aboard

In this project, quantitative measurements of volatile organic compounds (VOC) utilizing the HAIS TOGA-GV instrument on the NCAR GV aircraft will be obtained as part of the Convective Transport of Active Species in the Tropics (CONTRAST) experiment proposed to take place during January and February 2014 from the island of Guam. CONTRAST is designed to measure the chemistry and transport of reactive chemical species into the tropical Tropopause Transition Layer (TTL) over the Western Pacific warm pool area. TOGA-GV measurements include a suite of volatile organic compounds C-2 (VOCs), including: oxygenates, non-methane hydrocarbons, halocarbons, and some nitrogen and sulfur containing species. The sources, chemistry, and transport of trace gases and their degradation products into the lower stratosphere in this region during the boreal winter season can substantially impact the chemistry of the lower stratosphere. The trace gas concentrations measured in this campaign can influence atmospheric chemistry and climate and will provide a method of chemically describing transported air masses. Specific data will be obtained for: tracers of oceanic emissions and anthropogenic and biogenic activities, radical precursors, tracers of urban and biomass combustion emissions, products of oxidative processing, precursors to aerosol formation, and compounds important for aerosol modification and transformation. Better understanding of the processes in this region will improve process-oriented chemistry/climate models and their validation by providing a unique suite of benchmark measurements, especially in the characterization of active halogen chemistry.

在该项目中，将利用 NCAR GV 飞机上的 HAIS TOGA-GV 仪器对挥发性有机化合物 (VOC) 进行定量测量，作为拟于 1 月份进行的热带地区活性物质对流传输 (CONTRAST) 实验的一部分2014 年 2 月从关岛出发。 CONTRAST 旨在测量西太平洋暖池区域上空热带对流层顶过渡层 (TTL) 的化学反应和活性化学物质的传输。 TOGA-GV 测量包括一系列挥发性有机化合物 C-2 (VOC)，包括：含氧化合物、非甲烷碳氢化合物、卤化碳以及一些含氮和硫的物质。北半球冬季期间，微量气体及其降解产物的来源、化学性质以及向该地区低平流层的运输可能会对平流层低层的化学成分产生重大影响。此次活动中测量的痕量气体浓度可以影响大气化学和气候，并将提供一种以化学方式描述输送气团的方法。将获得以下具体数据：海洋排放以及人为和生物活动的示踪剂、自由基前体、城市和生物质燃烧排放的示踪剂、氧化加工产物、气溶胶形成的前体以及对气溶胶改性和转化重要的化合物。更好地了解该地区的过程将通过提供一套独特的基准测量来改进面向过程的化学/气候模型及其验证，特别是在活性卤素化学的表征方面。