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首页> 美国政府科技报告 >Analysis of the St. Louis RAMS (Regional Air Monitoring System) Ambient Particulate Data. Volume I: Final Report
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Analysis of the St. Louis RAMS (Regional Air Monitoring System) Ambient Particulate Data. Volume I: Final Report

机译：圣路易斯Rams（区域空气监测系统）环境微粒数据分析。第一卷：最终报告

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In this report, a variety of data analysis methods are used to study the 1976 particulate data from the Regional Air Monitoring System (RAMS) in St. Louis. The aerosol data, collected at ten sites, include hi-vol measurements of total suspended particulate mass (TSP), as well as dichotomous sampler measurements of inhalable particulate mass (IP). IP is subdivided into fine particles (less than 2.4 micrometers in diameter) and coarse particles (between 2.4 and 20 micrometers in diameter). This study also includes dichotomous sampler data for eight trace elements (S, Si, Al, Ca, Pb, V, Ti, and Fe) and data for 11 meteorological parameters. The analyses characterize the spatial pattern of particulate matter in-and-near St. Louis; background aerosol concentrations and particulate transport; temporal patterns of particulate concentrations, the dependence of aerosol concentrations on meteorology; and the relationship between hi-vol data and dichotomous data. Averaged over the RAMS network, IP mass consists of 50% fine particles and 50% coarse particles. Sulfates, secondary aerosols occurring on a large (air basin and synoptic) scale, constitute 53% of fine mass and 29% of IP. Crustal material, mostly consisting of manmade fugitive dust, comprises 83% of coarse mass and 47% of IP. That sulfate is the major source of fine mass and that crustal material dominates coarse mass are the two major themes apparent in the spatial, temporal, and meteorological patterns of the dichotomous data.

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