Trace Gas Measurements on the U. S. East Coast and Bermuda

美国东海岸和百慕大的痕量气体测量

• 批准号: 9204047
• 负责人: Russell Dickerson
• 金额: $ 40.33万
• 依托单位: University of Maryland, College Park
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1992
• 资助国家: 美国
• 起止时间: 1992-05-15 至 1995-04-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9204047&HistoricalAwards=false
• 关键词: Trace; Gas; Measurements; U.; S.

Ozone (O3) and other oxidants in the troposphere affect both local air quality and global climate. Photochemical reactions involving odd nitrogen compounds and carbon monoxide (CO) or hydrocarbons (NMHC) produce ozone, but measurements of these species are sparse. The resulting paucity of data for air over nonurban areas of the eastern United States and over the northern Atlantic Ocean limits our understanding of the atmospheric chemistry of ozone and hydroxyl radicals (OH). The PI's plan to conduct measurements at the AEROCE (Atmosphere/Ocean Chemistry Experiment) site in Bermuda in spring/summer 1992 and 1993, when they will measure various reactive nitrogen species and collect grab samples for hydrocarbons. Intensive experiments will be carried out for one month, than the instruments will be operated in an unattended, monitoring mode for as long as possible. Total reactive nitrogen (NOy) will be measured by direct chemiluminescence, and CO by IR absorption. Carbon monoxide will be measured continuously in both Bermuda and a U.S. East Coast site. For communications and data acquisition in Bermuda, they plan to use a PAM-based (Portable Automated Mesonet) system. These field experiments will study the fate and effects of pollutants after they have left the North American continent, and support aircraft experiments coordinated by the Center for Clouds, Chemistry, Climate (C4), and the North Atlantic Regional Study (NARE).

对流层中的臭氧（O3）和其他氧化剂会影响这两种物质。 当地空气质量和全球气候。 光化学反应 涉及奇数氮化合物和一氧化碳（CO），或 碳氢化合物（NMHC）产生臭氧，但对这些物质的测量 物种稀少。 由此导致的空中交通数据的缺乏 美国东部和北方的非城市地区 大西洋限制了我们对大气的理解 臭氧和羟基自由基（OH）的化学。 私家侦探计划 在AEROCE（大气/海洋化学）进行测量 1992年和1993年春/夏， 他们将测量各种活性氮物质， 采集碳氢化合物样本 强化实验将 进行了一个月，然后仪器将在 尽可能长时间地保持无人值守的监控模式。 总 活性氮（NOy）将通过直接 化学发光和CO的红外吸收。 一氧化碳将 在百慕大和美国东海岸连续测量 绝佳的价钱 对于百慕大的通信和数据采集， 计划使用基于PAM（便携式自动Mesonet）的系统。 这些 实地实验将研究污染物的归宿和影响 离开北美大陆后， 由云中心协调的飞机实验， 化学，气候（C4）和北大西洋区域研究 （NARE）。