A predominantly rural ozone monitoring network was operated under the auspices of the Clean Air Status and Trends Network (CASTNet) from 1988 until 1995.
Ozone data from sites in the eastern United States are presented and several indices are used to describe the spatial and temporal distribution of ozone concentration and exposure.
These indices are SUM06, W126, the 8-hour rolling average (MAX8ht>80), and the current National Ambient Air Quality Standards (NAAQS) for ozone.
Ozone indices were selected to illustrate the spatial and temporal distribution of ozone, and the sensitivity of this distribution to different representations of concentration or exposure.
CASTNet is unique in that a uniform set of site selection criteria and uniform procedures, including traceability to a single primary standard, provide a high degree of comparability across sites.
Sites were selected to avoid undue influence from point sources, area sources, or local activities.
The sites reflect a wide range of land use and terrain types including agricultural and forested, in flat, rolling, and complex terrain from the eastern seaboard across the Appalachian Mountains to the Midwest.
Results indicate that ozone concentrations varied greatly in time and space across the eastern United States. (...)
Mots-clés Pascal : Etats Unis, Amérique du Nord, Amérique, Est, Zone rurale, Pollution air, Troposphère, Ozone, Inventaire source pollution, Teneur air ambiant, Variation spatiale, Variation temporelle, Réseau mesure, Analyse donnée, Impact environnement, Exposition, Homme, O3
Mots-clés Pascal anglais : United States, North America, America, East, Rural area, Air pollution, Troposphere, Ozone, Pollution source inventory, Ambient air concentration, Spatial variation, Time variation, Measuring network, Data analysis, Environment impact, Exposure, Human
Notice produite par :
Inist-CNRS - Institut de l'Information Scientifique et Technique
Cote : 98-0437177
Code Inist : 001D16C02. Création : 25/01/1999.