RT null T1 Procedures and Methods for Integrated Global Background Monitoring of Environmental Pollution A1 World Meteorological Organization, A1 United Nations Environment Programme, A2 Rovinsky, F. Y. A2 Wiersma, G. B. K1 pollution K1 environmental pollution K1 environmental monitoring K1 precipitation K1 atmospheric temperature K1 aerosol K1 sulphur dioxide K1 ozone K1 nitrogen oxide K1 lead K1 cadmium K1 arsenic K1 mercury K1 organochlorine compound K1 pesticide K1 chlorohydrocarbon K1 hydrocarbon YR 1987 FD 1987 LK https://wedocs.unep.org/handle/20.500.11822/30582 UL https://wedocs.unep.org/handle/20.500.11822/30582 NO This report describes procedures and methodological guidance for integrated global background monitoring of environmental pollution within international environmental observation programmes coordinated by the World Meteorological Organization and the United Nations Environment Programme. It outlines the objectives, principles and operational tasks of monitoring systems designed to detect anthropogenic environmental change against natural variability. The document reviews the development of integrated monitoring approaches that measure pollutants and ecological responses across multiple environmental media, including air, precipitation, soils, surface waters and living organisms. It presents criteria for establishing background monitoring stations, guidance for sampling and analytical procedures, and approaches for quality control and statistical processing of monitoring data to support consistent global environmental assessment and data sharing. DS UN Environment Document Repository RD Sep 23, 2026