Hawaiian Air Chemistry

夏威夷莫纳罗亚的大气气溶胶将在自由对流层的某个高度进行采样。该项目将延长现有的在同一地点进行气溶胶采样的15年计划。它将包括对收集的样本和现有积压的早期样本进行实验室分析。其主要目标是为一套关于偏远地区自由对流层气溶胶负荷构成的长期基线数据作出贡献。这种数据集将构成大气组成变化的记录，应反映人为污染源对大气背景组成的不同影响。实验室工作将强调对微量元素的中子活化分析，这些元素可能带有自然或人为来源的“特征”。

Atmospheric aerosols will be sampled at an altitude in the free troposphere at Mauna Loa in Hawaii. The project will extend an existing 15-year program of aerosol sampling at the same location. It will include the laboratory analysis of the collected samples and of an existing backlog of earlier samples. The primary objective is to contribute to a long-term set of baseline data on the composition of the aerosol burden of the free troposphere in remote regions. Such a data set will constitute a record of changes in atmospheric composition that should reflect varying effects of anthropogenic pollutant sources on the background composition of the atmosphere. The laboratory work will emphasize neutron activation analysis for trace elements, which may carry "signatures" of natural or anthropogenic sources.