FAQ for ISO 19115 and 19115-2 Back to Collection NOAA/NOSA

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browse graphic Surface and lower tropospheric ozone is important in air chemistry photochemical reactions, is classified as an air pollutant and is a greenhouse gas. NOAA/GMD operates a network of 14 surface ozone monitoring sites in background and baseline atmospheric locations. This is the only continuous, long-term network of this kind in existence.