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

对流层中的臭氧和其他氧化剂会影响当地的空气质量和全球气候。奇怪的氮化合物与一氧化碳(CO)或碳氢化合物(NMHC)的光化学反应会产生臭氧，但对这些物种的测量很少。由此导致的美国东部非城市地区和北大西洋上空空气数据的匮乏，限制了我们对臭氧和羟基自由基(OH)大气化学的理解。国际和平研究所计划于1992年和1993年春/夏在百慕大的AEROCE(大气/海洋化学实验)地点进行测量，届时他们将测量各种活性氮物种并收集碳氢化合物的抓取样本。密集实验将进行一个月，然后仪器将在无人值守、监控模式下运行尽可能长的时间。总反应氮(NOY)的测定采用直接化学发光法，CO的测定采用红外吸收法。将在百慕大和美国东海岸的一个地点连续测量一氧化碳。为了在百慕大进行通信和数据采集，他们计划使用基于PAM(便携式自动化中间网)的系统。这些实地实验将研究污染物离开北美大陆后的命运和影响，并支持由云、化学、气候中心(C4)和北大西洋区域研究中心(NARE)协调的飞机实验。

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).