Tropospheric ozone chemistry over the tropical Pacific

臭氧和活性氮通过控制大气的氧化能力在对流层光化学中起着关键作用。为了研究这些问题，我们在1997年7月至11月期间，参加了美国国家航空航天局（NASA）的DC-8飞机在赤道西太平洋和美国大陆附近中低纬度地区的飞行测量。在整个使命中，我们成功地测量了活性氮物质（NO和NOy）。通过与气象学家和模式工作者共同分析这些资料，获得了许多关于对流层上部活性氮来源的新知识。在1998年，我们使用日本的研究飞机在印度尼西亚地区进行了飞机测量。在苏门答腊岛上空和附近进行了五次密集的飞行。和加里曼丹群岛生物质燃烧发生的区域。与共同研究人员对这些数据的研究表明，生物质燃烧的化学特征及其对赤道地区臭氧化学的影响。

Ozone and reactive nitrogen play a critical role in the tropospheric photochemistry by controlling the oxidation capacity in the atmosphere. In this study, we made aircraft measurements over the equatorial western Pacific and around the US continent to investigate these issues.In 1997, we participated in the NASA' s aircraft measurements made at middle and low latitudes near the US continent between July and November using NASA DC-8 aircraft. We successfully measured reactive nitrogen species (NO and NOy) whole through the mission. By analyzing these data with co-investigators including the meteorologists and modelers, a lot of new knowledge on the sources of reactive nitrogen in the upper troposphere was obtained. Impact on the ozone production rate was also quantitatively estimated.In 1998, we made aircraft measurements around Indonesia region using Japanese research aircraft. Five intensive flights were made over and near Sumatra Is. and Kalimantan Is., the region where biomass burning was occurring. Studies with co-investigators on these data show that chemical signature of biomass burning and the impact from it to the ozone chemistry in the equatorial region.