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U.S. Daily Surface Data (COOP Daily/Summary of Day)

Published by DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce | National Oceanic and Atmospheric Administration, Department of Commerce | Metadata Last Checked: January 27, 2026 | Last Modified: 2023-06-23T00:00:00.000+00:00
U.S. Daily Surface Data consists of several closely related data sets: DSI-3200, DSI-3202, DSI-3206, and DSI-3210. These are archived at the National Climatic Data Center (NCDC). U.S. Daily Surface Data is sometimes called cooperative data or COOP, named after the cooperative observers that recorded the data. In any one year there are about 8,000 stations operating. Most cooperative observers are state universities, state or federal agencies, or private individuals whose stations are managed and maintained by the National Weather Service. Each cooperative observer station may record as little as one parameter (precipitation), or several parameters. U.S. Daily Surface Data is also called Summary of the Day data. The original data was manuscript records, the earliest of which are from the 1800s. Records for approximately 23,000 stations have been archived from the beginning of record through the present. Official surface weather observation standards can be found in the Federal Meteorological Handbook.

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Earth Science > Atmosphere > Atmospheric Temperature > Surface Temperature > Air Temperature Earth Science > Atmosphere > Atmospheric Temperature > Surface Temperature > Maximum/Minimum Temperature Earth Science > Cryosphere > Snow/Ice > Snow Depth Earth Science > Atmosphere > Atmospheric Winds > Surface Winds Earth Science > Atmosphere > Precipitation > Precipitation Amount Earth Science > Atmosphere > Precipitation > Solid Precipitation > Snow Earth Science > Atmosphere > Precipitation > Liquid Precipitation > Rain Earth Science > Terrestrial Hydrosphere > Surface Water > Surface Water Processes/Measurements > Stage Height Earth Science > Atmosphere > Atmospheric Water Vapor > Water Vapor Processes > Evaporation Earth Science > Terrestrial Hydrosphere > Snow/Ice > Snow Water Equivalent Earth Science > Agriculture > Soils > Soil Temperature Earth Science > Atmosphere > Clouds > Cloud Properties > Cloud Frequency Earth Science > Atmosphere > Atmospheric Radiation > Sunshine Earth Science > Atmosphere > Atmospheric Temperature > Degree Days Earth Science > Cryosphere > Frozen Ground > Active Layer Earth Science > Atmosphere > Atmospheric Water Vapor > Water Vapor Indicators > Humidity Earth Science > Atmosphere > Atmospheric Pressure > Atmospheric Pressure Measurements Earth Science > Atmosphere > Atmospheric Pressure > Sea Level Pressure Earth Science > Atmosphere > Atmospheric Pressure > Surface Pressure Earth Science > Cryosphere > Snow/Ice > Ice Depth/Thickness Earth Science > Atmosphere > Weather Events > Fog Earth Science > Atmosphere > Atmospheric Phenomena > Frost Earth Science > Atmosphere > Weather Events > Lightning Earth Science > Atmosphere > Atmospheric Phenomena > Tornadoes Earth Science > Atmosphere > Weather Events > Lightning Earth Science > Reference And Information Services > Subscription Services Earth Science > Data Analysis And Visualization > Geographic Information Systems > Desktop Geographic Information Systems Earth Science > Data Analysis And Visualization > Geographic Information Systems > Web-Based Geographic Information Systems Continent > North America > United States Of America Ocean > Atlantic Ocean > North Atlantic Ocean > Caribbean Sea > Virgin Islands Ocean > Pacific Ocean > Central Pacific Ocean > Guam Ocean > Pacific Ocean > Central Pacific Ocean > American Samoa Ocean > Pacific Ocean > Western Pacific Ocean > Micronesia > Marshall Islands Ocean > Pacific Ocean > Western Pacific Ocean > Micronesia Ocean > Pacific Ocean > Western Pacific Ocean > Micronesia > Palau Ocean > Pacific Ocean > Central Pacific Ocean > Wake Island Vertical Location > Troposphere Vertical Location > Land Surface DOC/NOAA/NESDIS/NCDC > National Climatic Data Center, NESDIS, NOAA, U.S. Department of Commerce DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce

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