Hydrocarbon and Halocarbon Measurements During ACE-1

这个项目是南半球海洋气溶胶表征实验（ACE-1）的一部分，该实验将于1995年在遥远的南太平洋进行，使用飞机、船上和地面对各种化学物质、物理和气象参数进行测量，其中心目标是调查大气气溶胶的形成、演化和光学特性。在ACE-1项目的大部分飞行中，整个空气样本将在NCAR C-130飞机上收集。每次飞行完成后，样品将被运送到PI的家庭实验室，并分析约25种卤代烃和40种非甲烷碳氢化合物。五柱/六检测器气相色谱仪将用于分析样品。对这些全部空气数据的分析将有助于解释飞机上的其他测量结果，因为它提供了有关所遇到空气来源的信息。将在过境飞行中获得的卤代烃和碳氢化合物的纬向剖面图将提供关于不同大气气体的源和汇分布的有用信息。不同大气寿命的气体的垂直剖面提供了传输过程的信息。这些数据将对大气模拟界有用。在南半球遥远海洋区域的垂直剖面上采集的数据将用于通量计算，最终得出生物烃和卤代烃的源强度估计。

9418773 Blake 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, whole air samples will be collected on-board the NCAR C-130 aircraft during most flights of the ACE-1 project. After the completion of each such flight, the samples will be shipped to the PI's home laboratory and assayed for about 25 halocarbons and 40 non-methane hydrocarbons. A five column/six detector gas chromatography apparatus will be used for analyzing the samples. The analysis of these whole air data will be useful for the interpretation of other measurements aboard the aircraft by providing information on the origin of the air encountered. The latitudinal profiles of halocarbons and hydrocarbons that will be obtained in the transit flights will provide useful information regarding source and sink distributions of different atmospheric gases. Vertical profiles for gases of different atmospheric lifetimes yield information on transport processes. These data will be useful for the atmospheric modeling community. Data taken during Southern Hemisphere vertical profiles over remote marine regions will be used for flux calculations, ultimately leading to source strength estimates for biogenic hydrocarbons and halocarbons.