The World Meteorological Organisation (WMO)
History
Meteorology Milestones
IMO: The Origin of WMO
The Beginnings of WMO
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 Meteorology Milestones



1853 First International Meteorological Conference
1873 WMO's predecessor, the International Meteorological Organization (IMO) established
1947 WMO's Convention agreed at Conference of Directors
1950 WMO's Convention enters into force on 23 March
1951 WMO established as a specialized agency of the United Nations
1957 Global Ozone Observing Station set up
1963 World Weather Watch launched
1964 Operational Hydrology Programme established
Tropical Cyclone Programme established
1979 First World Climate Conference held which led to the establishment of the World Climate Programme
1983 WMO long-term planning process established
1985 Vienna Conference on Framework Convention for the Protection of the Ozone Layer
1987 Marine Meteorology and Associated Oceanographic Activities Programme established
Montreal Protocol calls for reduction of greenhouse gases
1988 WMO/UNEP Intergovernmental Panel on Climate Change established
1989 Global Atmosphere Watch established
1990 Second World Climate Conference initiates the Global Climate Observing System
International Decade for Natural Disaster Reduction begins
1991 WMO/UNEP begin process which led to negotiation of the UN Framework Convention on Climate Change
1992 UN Conference on Environment and Development (the 'Earth Summit') leads to Agenda 21
1993 Negotiation of UN Convention to Combat Desertification
1994 Climate Information and Prediction Services (CLIPS) established
1997 El Nino/Southern Oscillation warm episode and severe weather events across the world
Kyoto Conference establishes timetable for reduction of greenhouse gas emissions
1998 Strongest El Nino ever coincides with record temperatures followed by La Nina
1999 Inauguration of new WMO Headquarters in Geneva
2000 The World Meteorological Organization celebrates its 50 years of service