RT null T1 Assessment of Urban Air Quality A1 United Nations Environment Programme, A1 Monitoring and Assessment Research Centre, A1 World Health Organization, K1 air quality K1 air pollution K1 pollution control K1 sulphur dioxide K1 particulate matter K1 nitrogen oxide K1 carbon K1 lead K1 urban area K1 city K1 case study K1 Norway K1 United Kingdom K1 Hungary K1 Hong Kong K1 United States K1 Greece K1 China K1 Netherlands K1 Canada YR 1988 FD 1988 LK https://wedocs.unep.org/handle/20.500.11822/25978 UL https://wedocs.unep.org/handle/20.500.11822/25978 NO The overall purpose of this report is: - to continue the ongoing process of producing periodic evaluations of the global air pollution situation in urban areas; - to continue to develop and advance the techniques used for evaluating air pollution monitoring data with regard to human exposure and the associated risks implied; - to prepare a background document for consideration by the forthcomingmeeting of Government Designated Experts on the GEMS Health Related Monitoring Programme which is scheduled to be held in Geneva in June 1988. DS UN Environment Document Repository RD Sep 16, 2026