U.S. Daily Surface Data (COOP Daily/Summary of Day)
Surface Data, Daily GIS image
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 Records for approximately 23,000 stations have been archived from the beginning of record through the present.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.
- Users must cite this dataset when used as a source.
- NCEI DSI 3200
- NCEI DSI 3202
- NCEI DSI 3206
- NCEI DSI 3210
- gov.noaa.ncdc:C00314
| Order Data |
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NCEI Customer Support Page (order)
To access the original format of the data, contact Customer Engagement Branch for more information.
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| Distribution Formats |
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| Ordering Instructions |
Contact NCEI for other distribution options and instructions. |
| Distributor |
NOAA National Centers for Environmental Information
ncei.info@noaa.gov
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| Dataset Point of Contact |
Customer Engagement Branch
NOAA National Centers for Environmental Information
1-828-271-4800
ncei.orders@noaa.gov
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| Time Period |
1867-01-01 to 2011-01-01 |
| Spatial Bounding Box Coordinates |
West: 130.0
East: -60.0
South: -15.0
North: 70.0
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| Spatial Coverage Map |
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| Publication Dates |
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| Data Presentation Form |
Digital table - digital representation of facts or figures systematically displayed, especially in columns
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| Dataset Progress Status |
Complete - production of the data has been completed |
| Data Update Frequency |
As needed |
| Purpose |
To make a wide range of climatic data available to researchers and the public. |
| Dataset Citation |
- Users must cite this dataset when used as a source.
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| Cited Authors |
- User Engagement and Services Branch
DOC/NOAA/NESDIS/NCDC > National Climatic Data Center, NESDIS, NOAA, U.S. Department of Commerce
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| Originators |
- User Engagement and Services Branch
DOC/NOAA/NESDIS/NCDC > National Climatic Data Center, NESDIS, NOAA, U.S. Department of Commerce
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| Publishers |
- DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce
- DOC/NOAA/NESDIS/NCDC > National Climatic Data Center, NESDIS, NOAA, U.S. Department of Commerce
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| Theme keywords |
Global Change Master Directory (GCMD) Science Keywords
- 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
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| Data Center keywords |
Global Change Master Directory (GCMD) Data Center Keywords
- 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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| Place keywords |
Global Change Master Directory (GCMD) Location Keywords
- 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
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| Stratum keywords |
Global Change Master Directory (GCMD) Location Keywords
- Vertical Location > Troposphere
- Vertical Location > Land Surface
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| Use Constraints |
- Users must cite this dataset when used as a source.
- Use liability: NOAA and NCEI cannot provide any warranty as to the accuracy, reliability, or completeness of furnished data. Users assume responsibility to determine the usability of these data. The user is responsible for the results of any application of this data for other than its intended purpose.
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| Access Constraints |
- Distribution liability: NOAA and NCEI make no warranty, expressed or implied, regarding these data, nor does the fact of distribution constitute such a warranty. NOAA and NCEI cannot assume liability for any damages caused by any errors or omissions in these data. If appropriate, NCEI can only certify that the data it distributes are an authentic copy of the records that were accepted for inclusion in the NCEI archives.
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| Fees |
- In most cases, electronic downloads of the data are free. However, fees may apply for custom orders, data certifications, copies of analog materials, and data distribution on physical media.
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| Lineage information for: dataset |
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| Lineage Statement |
U.S. Daily Surface Data consists of several closely related data sets: DSI-3200, DSI-3202, DSI-3206, and DSI-3210. See processing steps and documention for more information. |
| Processing Steps |
- Selected Summary of the Day data from related file DSI-3210 for National Weather Service "first order" or principal climatological stations and "second order" stations have been merged into this file. Therefore, users must be aware that if an element in DSI-3210 was flagged as suspicious or in error and an estimated value is included, the estimated value is entered into DSI-3200 as an "original" value. If a user needs the true original value, it must be retrieved from DSI-3210. It must also be noted that observations from DSI-3210 contains surface observational data from the Automated Surface Observing System (DSI-3211). Users must be aware that DSI-3210 contains flagged data that have been quality controlled by personnel at the NCDC. DSI-3211 contains only automated quality controlled data.
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| Lineage information for: repository |
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| Processing Steps |
- 2015-04-22T00:00:00 - NOAA created the National Centers for Environmental Information (NCEI) by merging NOAA's National Climatic Data Center (NCDC), National Geophysical Data Center (NGDC), and National Oceanographic Data Center (NODC), including the National Coastal Data Development Center (NCDDC), per the Consolidated and Further Continuing Appropriations Act, 2015, Public Law 113-235. NCEI launched publicly on April 22, 2015.
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| Acquisition Information (collection) |
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| Instrument |
- > RAIN GAUGES
- > SNOW MEASURING ROD
- > ANEMOMETERS
- > WIND VANES
- > ANEROID PRESSURE SENSOR
- > HYGROMETERS
- > SOIL TEMPERATURE PROBE
- > STREAM GAUGES
- > THERMOMETERS
- > TEMPERATURE LOGGERS
- > PSYCHROMETERS
- > VISUAL OBSERVATIONS
- > TEMPERATURE LOGGERS
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Last Modified: 2023-06-23
For questions about the information on this page, please email:
ncei.info@noaa.gov
