| Weather Programs and Organizations |
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 | World Meteorological Day (WMD) (annually: 23 March)
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 | International Meteorological Centenary (100th anniv. IMO-WMO: 1873-1973)
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 | World Weather Watch (WWW) and Global Atmosphere Watch (GAW)
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 | 50th Anniversary of the World Meteorological Organization (WMO) (1950-2000)
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 | World Meteorological Organization (WMO) (Does not include WMO-specific (WMD, IMO-WMO Centenary, WWW, GAW, and 50th Anniversary WMO) items in the links directly above.)
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 | Global Atmospheric Research Program (GARP), GARP Atlantic Tropical Experiment (GATE), and Global Weather Experiment (GWE) (also World Ocean Circulation Experiment (WOCE))
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 | National weather services, centers, observatories, and their anniversaries (as well as national climate programs and institutes, meteorological schools and training facilities, private meteorological services or organizations, and meteorological societies)
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| Weather-Related Programs |
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 | International Polar Year (IPY) (1st: 1882-1883; 2nd: 1932-1933; 3rd: see IGY; 4th: 2007-2008)
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 | International Geophysical Year (IGY) (1957-1958)
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 | International Quiet Sun Year (IQSY) (1964-1965)
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 | International Heliophysical Year (IHY) (2007-2009)
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 | International Hydrological Decade (IHD) (1965-1974)
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 | International Decade for Natural Disaster Reduction (IDNDR) (1990s)
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 | Peaceful Uses of Outer Space (PUOS)
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 | Mission To Planet Earth (MTPE)
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 | Scientific Committee on Antarctic Research (SCAR)
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| Weather Instruments and Measurements |
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 | Thermometers, temperatures and temperature units
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 | Barometers, atmospheric pressure and pressure units
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  | Anemometers, windsocks, wind vanes, and wind measurements
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 | Weather balloons and radiosondes (and pilot balloons, tracking theodolites, tracking antennas and equipment, and Eole, Argos and other un-manned stratospheric balloons)
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  | Precipitation (rain and snow) gauges (and evaporation pans, water-depth gauges, and snow-depth measurements)
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 | Sunshine recorders/heliographs, actinometers, and pyranometers (and signaling heliographs)
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 | Ground-based remote sensing in meteorology (radar, lidar, sodar, etc.)
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 | Stevenson screens (weather instrument shelters)
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 | Weather maps (surface and upper-level weather maps, station models, weather symbols, and streamlines)
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  | Automatic weather observing stations (land autostations, and ocean buoys)
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 | Ocean weather ships
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| Weather Elements |
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 | Ozone (O3) (and World Ozone Day, annually: 16 September; and Montréal Protocol, 1987)
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 | Clouds and skies (only items with clear intent to show clouds)
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 | Tornadoes, waterspouts, and dustdevils
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 | Hurricanes, typhoons, and tropical cyclones (and tropical cyclone relief overprints)
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  | Weather modification (rain enhancement, and hail and lightning suppression)
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 | Atmospheric water cycle
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| Climatology |
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 | Phenology
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 | Climatologists and Contributors to Climatology
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 | Climatic Regions and Climate-Related Maps
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 | Preserve the Polar Regions and Glaciers (PPRG)
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 | Climate-Related International Conferences
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 | Drought and Desertification
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 | Flood-Related
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| Meteorologists, Climatologists, Atmospheric Scientists, and other Contributors to Meteorology and Climatology |
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 | Chronological and alphabetical indexes
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