(WMO), specialized agency of the United Nations; established in 1951 with headquarters at Geneva. It replaced the International Meteorological Organization, which was established in 1878. WMO aims at promoting international cooperation between the world's meteorological stations, standardizing meteorological observations, encouraging research and training, and extending the use of meteorological findings to different fields. Satellites, used to collect meteorological data and in communications, have made possible the rapid exchange of observations for forecasting in the WMO-sponsored World Weather Watch. WMO operates through the World Meteorological Congress (which meets at least every four years) with delegates from its entire membership, an executive committee, a technical commission, a secretariat, and six regional meteorological associations in Africa, Asia, South America, North and Central America, SW Pacific, and Europe. It has 185 members.

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