Ozone, Nitrogen Oxides, and Oxidants in a Rural Heterogeneous Photochemical Environment

大气臭氧和其他光化学氧化剂将在弗吉尼亚州谢南多阿山脉的一个农村山区进行研究，该地区被天然碳氢化合物排放和工业化的中西部和城市化的东部沿海的顺风向包围。一氧化氮、臭氧和紫外光的测量将与非甲烷碳氢化合物、羰基化合物、羧酸、颗粒和气态无机阴离子和阳离子、有机硝酸盐、过氧化氢和有机过氧化氢的测量同步进行，这些测量将在晴朗的空气、云中的间隙空气和两种分散的云水中进行测量。这些数据集将被结合起来，并用于调查在碳氢化合物和氮氧化物浓度不同的森林覆盖的农村地区的晴朗和多云空气中的臭氧净产生和氧化剂。合并后的数据集将进一步用于阐明天然碳氢化合物氧化的机制。这些测量是非甲烷碳氢化合物及其部分氧化产物(羰基化合物、羧酸、有机过氧化氢、有机硝酸盐)的气相和水相的第一组同时测量，以及控制云中臭氧和其他氧化剂的因素。

Atmospheric ozone and other photochemical oxidants will be studied at a rural mountain site in the Shenandoah Mountains of Virginia, a region surrounded by natural hydrocarbon emissions and downwind of the industrialized midwest and the urbanized eastern seaboard. Measurements of nitric oxide, ozone and UV light will be co-located and coincident with measurements of non- methane hydrocarbons, carbonyl compounds, carboxylic acids, particulate and gaseous inorganic anions and cations, organic nitrates, hydrogen peroxide and organic hydroperoxides, which are to be measured in clear air, interstitial air in cloud, and in two descrete size fractions of cloud water. The data sets will be combined and used to investigate net ozone production and oxidants in clear and cloudy air at a forested rural site with variable hydrocarbon and nitrogen oxide concentrations. The combined data sets will be further used to elucidate mechanisms of natural hydrocarbon oxidation. The measurements represent the first concurrent set of measurements in the gas and aqueous phases of non-methane hydrocarbons, their partially oxidized products (carbonyl compounds, carboxylic acids, organic hydroperoxides, organic nitrates), and the factors controlling ozone and other oxidants in-cloud.