Annual Cycles and Long-range Transports of Non-methane Hydrocarbons, CO, Rn-222 and Kr-85 in the Mid and Upper Troposphere

对流层中上层非甲烷碳氢化合物、CO、Rn-222 和 Kr-85 的年循环和远距离传输

• 批准号: 8917995
• 负责人: Mark Kritz
• 金额: $ 18.18万
• 依托单位: SUNY at Albany
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1990
• 资助国家: 美国
• 起止时间: 1990-07-15 至 1992-09-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8917995&HistoricalAwards=false
• 关键词: Annual; Cycles; Long; range; Transports

A central problem in interpreting atmospheric chemistry has been finding a rational means of evaluating the relative roles of chemistry and transport, so that the budgets, reaction times, fluxes, etc. of primary interest could be identified and quantified. One approach to this problem has been to use measurements of the atmospheric concentrations of natural and manmade radionuclides as a way of evaluating transport. The atmospheric concentrations of radionuclides such as Radon-222 and Krypton-85 are essentially insensitive to chemical effects, while at the same time are affected by transport in the same way as are many of the chemically reactive species found in the atmosphere. Thus the simultaneous measurement of both radioactive and reactive chemical species has proved to be an effective approach in atmospheric chemistry field experiments. The objectives of this research project is to: 1) build and flight test an airborne radon pumped whole air sampler, and build the laboratory transfer/analysis system for use in conjunction with the whole air sampler; and 2) build an airborne aerosol sampling system designed to collect samples for Pb-210 analysis. Both samplers will be designed to facilitate their eventual integration aboard medium sized research aircraft such as the NCAR Electra. This equipment will be available and for use in organized multi-investigator atmospheric chemistry experiments such as the Pacific Stratus/Sulfur Investigation (PSI), the Pacific Dust Experiment (PACDEX) or the Atmosphere/Ocean Chemistry Experiment (AEROCE).

解释大气化学的一个核心问题是 一直在寻找一种合理的方法来评估 化学和运输，这样预算，反应时间， 通量等主要利益可以确定， 量化。 解决这个问题的一种方法是使用 测量大气中的天然和 人造放射性核素作为评估运输的一种方式。 的 放射性核素的大气浓度，如氡-222和 氪-85基本上对化学效应不敏感， 同时也受到交通的影响， 大气中发现的许多化学活性物质。 因此，同时测量放射性和 活性化学物种已被证明是一种有效的方法 大气化学现场实验 本研究项目的目标是：1）建立和 飞行测试一个机载氡泵全空气采样器，并建立 结合使用实验室转移/分析系统 与整个空气采样器;和2）建立一个空气中的气溶胶 取样系统设计用于收集Pb-210分析的样品。 这两个采样器的设计将有助于他们的最终 中型研究飞机上的集成，例如 NCAR Electra。 该设备将提供并用于 有组织的多研究者大气化学实验 例如太平洋层云/硫磺调查（PSI）， 太平洋尘埃实验（PACDEX）或大气/海洋 化学实验（AEROCE）。