Global Data Assimilation System (GDAS)
Identification Information
Distribution Information
Data Quality Information
Metadata Maintenance Information

Metadata: 
  File identifier: 
      gov.noaa.ncdc:C00379
  Language: 
      eng; USA
  Character set: 
    Character set code: 
      utf8
  Hierarchy level: 
    Scope code: 
      dataset
  Metadata author:  title: NCEI (pointOfContact)
    Responsible party: uuid: 440b3ac2-64a5-46e2-9846-38305718b644
      Organisation name: 
          NOAA National Centers for Environmental Information
      Contact info: 
        Contact: 
          Address: 
            Address: 
              Electronic mail address: 
                  ncei.info@noaa.gov
          Online Resource: 
            Online Resource: 
              Linkage: 
                URL: 
                  https://www.ncei.noaa.gov/contact
              Name: 
                  NCEI Contact Information
              Description: 
                  Information for contacts at NCEI.
              Function: 
                Online function code: 
                  information
      Role: 
        Role code: 
          pointOfContact
  Date stamp: 
      2023-06-23
  Metadata standard name: 
      ISO 19115-2 Geographic Information - Metadata - Part 2: Extensions for Imagery and Gridded Data
  Metadata standard version: 
      ISO 19115-2:2009(E)
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Identification info: Data identification: Citation: Citation: Title: Global Data Assimilation System (GDAS) Date: Date: Date: 2001-01-01 Date type: Date type code: publication Identifier: Identifier: Code: NCEI DSI 6172 Identifier: Identifier: Code: gov.noaa.ncdc:C00379 Cited responsible party: Responsible party: Organisation name: NOAA National Centers for Environmental Information Role: Role code: publisher Cited responsible party: Responsible party: Organisation name: DOC/NOAA/NWS/NCEP/EMC > Environmental Modeling Center, National Centers for Environmental Prediction, National Weather Service, NOAA, U.S. Department of Commerce Contact info: Contact: Online Resource: Online Resource: Linkage: URL: http://www.emc.ncep.noaa.gov/gmb/gdas/ Application profile: Web Browser Name: EMC GDAS Web Site Description: Web site providing overview and technical documentation for the GDAS. Function: Online function code: information Role: Role code: originator Cited responsible party: Responsible party: Organisation name: DOC/NOAA/NWS/NCEP/EMC > Environmental Modeling Center, National Centers for Environmental Prediction, National Weather Service, NOAA, U.S. Department of Commerce Contact info: Contact: Online Resource: Online Resource: Linkage: URL: http://www.emc.ncep.noaa.gov/gmb/gdas/ Application profile: Web Browser Name: EMC GDAS Web Site Description: Web site providing overview and technical documentation for the GDAS. Function: Online function code: information Role: Role code: author Presentation form: Presentation form code: modelDigital Abstract: The Global Data Assimilation System (GDAS) is the system used by the Global Forecast System (GFS) model to place observations into a gridded model space for the purpose of starting, or initializing, weather forecasts with observed data. GDAS adds the following types of observations to a gridded, 3-D, model space: surface observations, balloon data, wind profiler data, aircraft reports, buoy observations, radar observations, and satellite observations. GDAS data are available as both input observations to GDAS and gridded output fields from GDAS. Gridded GDAS output data can be used to start the GFS model. Due to the diverse nature of the assimilated data types, input data are available in a variety of data formats, primarily Binary Universal Form for the Representation of meteorological data (BUFR) and Institute of Electrical and Electronics Engineers (IEEE) binary. The GDAS output is World Meteorological Organization (WMO) Gridded Binary (GRIB). Purpose: To provide initialization state grids for starting the Global Forecast System (GFS) model. Credit: Status: Progress code: onGoing Point of contact: Responsible party: Organisation name: NOAA National Centers for Environmental Information Position name: Customer Engagement Branch Contact info: Contact: Phone: Telephone: Voice: 1-828-271-4800 Facsimile: 1-828-271-4876 Address: Address: Delivery point: 151 Patton Avenue Delivery point: Veach-Baley Federal Building, Room 468 City: Asheville Administrative area: NC Postal code: 28801-5001 Country: USA Electronic mail address: ncei.orders@noaa.gov Online Resource: Online Resource: Linkage: URL: https://www.ncei.noaa.gov Protocol: HTTPS Application profile: Web Browser Name: NOAA National Centers for Environmental Information (NCEI) Description: NCEI home page with information, data access and contact information. Function: Online function code: information Hours of service: 8:00 - 6:00 Eastern Role: Role code: pointOfContact Point of contact: Responsible party: Organisation name: DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce Contact info: Contact: Address: Address: Electronic mail address: nomads.ncdc@noaa.gov Role: Role code: pointOfContact Resource maintenance: Maintenance information: Maintenance and update frequency: Maintenance frequency code: daily Descriptive keywords: Keywords: Keyword: Earth Science > Atmosphere > Altitude > Geopotential Height Keyword: Earth Science > Atmosphere > Altitude > Planetary Boundary Layer Height Keyword: Earth Science > Atmosphere > Altitude > Tropopause Keyword: Earth Science > Atmosphere > Atmospheric Pressure > Atmospheric Pressure Measurements Keyword: Earth Science > Atmosphere > Atmospheric Pressure > Pressure Thickness Keyword: Earth Science > Atmosphere > Atmospheric Pressure > Sea Level Pressure Keyword: Earth Science > Atmosphere > Atmospheric Pressure > Surface Pressure Keyword: Earth Science > Atmosphere > Atmospheric Pressure > Albedo Keyword: Earth Science > Atmosphere > Atmospheric Pressure > Land Cover Keyword: Earth Science > Atmosphere > Atmospheric Pressure > Soil Moisture/Water Content Keyword: Earth Science > Atmosphere > Atmospheric Pressure > Soil Temperature Keyword: Earth Science > Atmosphere > Atmospheric Pressure > Sea Surface Temperature Keyword: Earth Science > Atmosphere > Atmospheric Radiation > Albedo Keyword: Earth Science > Atmosphere > Atmospheric Radiation > Incoming Solar Radiation Keyword: Earth Science > Atmosphere > Atmospheric Radiation > Longwave Radiation Keyword: Earth Science > Atmosphere > Atmospheric Radiation > Radiative Flux Keyword: Earth Science > Atmosphere > Atmospheric Radiation > Shortwave Radiation Keyword: Earth Science > Atmosphere > Atmospheric Radiation > Solar Radiation Keyword: Earth Science > Atmosphere > Atmospheric Temperature > Surface Temperature > Air Temperature Keyword: Earth Science > Atmosphere > Atmospheric Temperature > Atmospheric Stability Keyword: Earth Science > Atmosphere > Atmospheric Temperature > Boundary Layer Temperature Keyword: Earth Science > Atmosphere > Atmospheric Temperature > Dew Point Temperature Keyword: Earth Science > Atmosphere > Atmospheric Temperature > Upper Air Temperature > Vertical Profiles > Inversion Height Keyword: Earth Science > Atmosphere > Atmospheric Temperature > Surface Temperature > Potential Temperature Keyword: Earth Science > Atmosphere > Atmospheric Temperature > Surface Temperature > Skin Temperature Keyword: Earth Science > Atmosphere > Atmospheric Temperature > Surface Temperature Keyword: Earth Science > Atmosphere > Atmospheric Temperature > Upper Air Temperature Keyword: Earth Science > Atmosphere > Atmospheric Water Vapor > Water Vapor Indicators > Dew Point Temperature Keyword: Earth Science > Atmosphere > Atmospheric Water Vapor > Water Vapor Processes > Evaporation Keyword: Earth Science > Atmosphere > Atmospheric Water Vapor > Water Vapor Indicators > Humidity Keyword: Earth Science > Atmosphere > Atmospheric Water Vapor > Water Vapor Indicators > Total Precipitable Water Keyword: Earth Science > Atmosphere > Atmospheric Water Vapor > Water Vapor Keyword: Earth Science > Atmosphere > Atmospheric Water Vapor > Water Vapor Profiles Keyword: Earth Science > Atmosphere > Atmospheric Winds > Boundary Layer Winds Keyword: Earth Science > Atmosphere > Atmospheric Winds > Wind Dynamics > Convection Keyword: Earth Science > Atmosphere > Atmospheric Winds > Upper Level Winds > Flight Level Winds Keyword: Earth Science > Atmosphere > Atmospheric Winds > Surface Winds Keyword: Earth Science > Atmosphere > Atmospheric Winds > Upper Level Winds Keyword: Earth Science > Atmosphere > Atmospheric Winds > Wind Dynamics > Vertical Wind Velocity/Speed Keyword: Earth Science > Atmosphere > Atmospheric Winds > Wind Dynamics > Vorticity Keyword: Earth Science > Atmosphere > Atmospheric Winds > Wind Profiles Keyword: Earth Science > Atmosphere > Atmospheric Winds > Wind Dynamics > Wind Shear Keyword: Earth Science > Atmosphere > Clouds > Tropospheric/High-Level Clouds (observed/Analyzed) Keyword: Earth Science > Atmosphere > Clouds > Tropospheric/Low Level Clouds (observed/Analyzed) Keyword: Earth Science > Atmosphere > Clouds > Tropospheric/Mid-Level Clouds (observed/Analyzed) Keyword: Earth Science > Atmosphere > Precipitation > Liquid Precipitation > Rain > Freezing Rain Keyword: Earth Science > Atmosphere > Precipitation > Precipitation Amount Keyword: Earth Science > Atmosphere > Precipitation > Precipitation Rate Keyword: Earth Science > Atmosphere > Precipitation > Liquid Precipitation > Rain Keyword: Earth Science > Atmosphere > Precipitation > Solid Precipitation > Ice Pellets > Sleet Keyword: Earth Science > Atmosphere > Precipitation > Solid Precipitation > Snow Keyword: Earth Science > Terrestrial Hydrosphere > Snow/Ice > Albedo Keyword: Earth Science > Terrestrial Hydrosphere > Snow/Ice > Snow Cover Keyword: Earth Science > Terrestrial Hydrosphere > Snow/Ice > Snow Depth Keyword: Earth Science > Oceans > Sea Ice > Sea Ice Concentration Keyword: Earth Science > Land Surface > Surface Radiative Properties > Albedo Keyword: Earth Science > Land Surface > Land Use/Land Cover > Land Use/Land Cover Classification > Vegetation Index Keyword: Earth Science > Land Surface > Soils > Soil Moisture/Water Content Keyword: Earth Science > Land Surface > Soils > Soil Temperature Keyword: Earth Science > Oceans > Ocean Temperature > Sea Surface Temperature Type: Keyword type code: theme Thesaurus name: Citation: Title: Global Change Master Directory (GCMD) Science Keywords Date: Date: Date: 2018 Date type: Date type code: revision Edition: Version 8.6 Cited responsible party: Responsible party: Organisation name: Global Change Data Center, Science and Exploration Directorate, Goddard Space Flight Center (GSFC) National Aeronautics and Space Administration (NASA) Contact info: Contact: Online Resource: Online Resource: Linkage: URL: https://earthdata.nasa.gov/about/gcmd/global-change-master-directory-gcmd-keywords Protocol: HTTPS Application profile: Web Browser Name: Global Change Master Directory (GCMD) Keywords Description: The information provided on this page seeks to define how the GCMD Keywords are structured, used and accessed. It also provides information on how users can participate in the further development of the keywords. Function: Online function code: information Role: Role code: publisher Descriptive keywords: Keywords: Keyword: Geographic Region > Global Type: Keyword type code: place Thesaurus name: Citation: Title: Global Change Master Directory (GCMD) Location Keywords Date: Date: Date: 2018 Date type: Date type code: revision Edition: Version 8.6 Cited responsible party: Responsible party: Organisation name: Global Change Data Center, Science and Exploration Directorate, Goddard Space Flight Center (GSFC) National Aeronautics and Space Administration (NASA) Contact info: Contact: Online Resource: Online Resource: Linkage: URL: https://earthdata.nasa.gov/about/gcmd/global-change-master-directory-gcmd-keywords Protocol: HTTPS Application profile: Web Browser Name: Global Change Master Directory (GCMD) Keywords Description: The information provided on this page seeks to define how the GCMD Keywords are structured, used and accessed. It also provides information on how users can participate in the further development of the keywords. Function: Online function code: information Role: Role code: publisher Descriptive keywords: Keywords: Keyword: Vertical Location > Boundary Layer Keyword: Vertical Location > Land Surface Keyword: Vertical Location > Sea Surface Keyword: Vertical Location > Troposphere Keyword: Vertical Location > Stratosphere Type: Keyword type code: stratum Thesaurus name: Citation: Title: Global Change Master Directory (GCMD) Location Keywords Date: Date: Date: 2018 Date type: Date type code: revision Edition: Version 8.6 Cited responsible party: Responsible party: Organisation name: Global Change Data Center, Science and Exploration Directorate, Goddard Space Flight Center (GSFC) National Aeronautics and Space Administration (NASA) Contact info: Contact: Online Resource: Online Resource: Linkage: URL: https://earthdata.nasa.gov/about/gcmd/global-change-master-directory-gcmd-keywords Protocol: HTTPS Application profile: Web Browser Name: Global Change Master Directory (GCMD) Keywords Description: The information provided on this page seeks to define how the GCMD Keywords are structured, used and accessed. It also provides information on how users can participate in the further development of the keywords. Function: Online function code: information Role: Role code: publisher Descriptive keywords: Keywords: Keyword: NOMADS > The NOAA Operational Model Archive and Distribution System Type: Keyword type code: project Thesaurus name: Citation: Title: Global Change Master Directory (GCMD) Project Keywords Date: Date: Date: 2018 Date type: Date type code: revision Edition: Version 8.6 Cited responsible party: Responsible party: Organisation name: Global Change Data Center, Science and Exploration Directorate, Goddard Space Flight Center (GSFC) National Aeronautics and Space Administration (NASA) Contact info: Contact: Online Resource: Online Resource: Linkage: URL: https://earthdata.nasa.gov/about/gcmd/global-change-master-directory-gcmd-keywords Protocol: HTTPS Application profile: Web Browser Name: Global Change Master Directory (GCMD) Keywords Description: The information provided on this page seeks to define how the GCMD Keywords are structured, used and accessed. It also provides information on how users can participate in the further development of the keywords. Function: Online function code: information Role: Role code: publisher Descriptive keywords: Keywords: Keyword: DOC/NOAA/NESDIS/NCDC > National Climatic Data Center, NESDIS, NOAA, U.S. Department of Commerce Keyword: DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce Type: Keyword type code: dataCentre Thesaurus name: Citation: Title: Global Change Master Directory (GCMD) Data Center Keywords Date: Date: Date: 2018 Date type: Date type code: revision Edition: Version 8.6 Cited responsible party: Responsible party: Organisation name: Global Change Data Center, Science and Exploration Directorate, Goddard Space Flight Center (GSFC) National Aeronautics and Space Administration (NASA) Contact info: Contact: Online Resource: Online Resource: Linkage: URL: https://earthdata.nasa.gov/about/gcmd/global-change-master-directory-gcmd-keywords Protocol: HTTPS Application profile: Web Browser Name: Global Change Master Directory (GCMD) Keywords Description: The information provided on this page seeks to define how the GCMD Keywords are structured, used and accessed. It also provides information on how users can participate in the further development of the keywords. Function: Online function code: information Role: Role code: publisher Spatial representation type: Spatial representation type code: Spatial resolution: Language: eng; USA Topic category: Topic category code: climatologyMeteorologyAtmosphere Extent: Extent: Description: Geographic element: Geographic bounding box: Extent type code: 1 West bound longitude: -180.0 East bound longitude: 180.0 South bound latitude: -90.0 North bound latitude: 90.0 Temporal element: Temporal extent: Extent: Time period: Description: ground condition Begin date: 2001-01-01 End date: now
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Distribution info: Distribution: Distributor: Distributor: Distributor contact: title: NCEI (distributor) Responsible party: uuid: 440b3ac2-64a5-46e2-9846-38305718b644 Organisation name: NOAA National Centers for Environmental Information Contact info: Contact: Address: Address: Electronic mail address: ncei.info@noaa.gov Online Resource: Online Resource: Linkage: URL: https://www.ncei.noaa.gov/contact Name: NCEI Contact Information Description: Information for contacts at NCEI. Function: Online function code: information Role: Role code: distributor Distribution Order Process: Standard order process: 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. Ordering instructions: Contact NCEI for other distribution options and instructions. Distributor format: Format: Name: BUFR Version: missing Distributor format: Format: Name: GRIB 2 Version: 2 Distributor transfer options: Digital transfer options: Online: Online Resource: Linkage: URL: https://www.ncei.noaa.gov/metadata/geoportal/rest/metadata/item/gov.noaa.ncdc:C00379/html Protocol: HTTPS Application profile: Landing Page Name: NCEI Dataset Landing Page Description: Landing page for the dataset. Function: Online function code: information Distributor transfer options: Digital transfer options: Online: Online Resource: Linkage: URL: https://www.ncei.noaa.gov/products/weather-climate-models/global-data-assimilation Protocol: HTTPS Application profile: Information Name: NCEI Product Information Page Description: Description of the data and related resources. Function: Online function code: information Distributor transfer options: Digital transfer options: Online: Online Resource: Linkage: URL: https://www.ncei.noaa.gov/data/ncep-global-data-assimilation/access/ Protocol: HTTPS Application profile: Download Name: NCEI Direct Download (Dataset Files) Description: Direct download for the dataset. Function: Online function code: download Distributor transfer options: Digital transfer options: Online: Online Resource: Linkage: URL: https://www.ncei.noaa.gov/has/HAS.FileAppRouter?datasetname=GDAS_DyBuf&subqueryby=STATION&applname=&outdest=FILE Protocol: HTTPS Application profile: Data Search Application Name: NCEI Dataset Order (GDAS - Daily Bufr Files) Description: Select and order files in the offline archive. Function: Online function code: order Distributor transfer options: Digital transfer options: Online: Online Resource: Linkage: URL: https://www.ncei.noaa.gov/has/HAS.FileAppRouter?datasetname=GDAS_Hrly&subqueryby=STATION&applname=&outdest=FILE Protocol: HTTPS Application profile: Data Search Application Name: NCEI Dataset Order (GDAS - Hourly Tar Files) Description: Select and order files in the offline archive. Function: Online function code: order Distributor transfer options: Digital transfer options: Online: Online Resource: Linkage: URL: https://www.ncei.noaa.gov/has/HAS.FileAppRouter?datasetname=GDAS_Dy&subqueryby=STATION&applname=&outdest=FILE Protocol: HTTPS Application profile: Data Search Application Name: NCEI Dataset Order (GDAS - Daily Tar Files) Description: Select and order files in the offline archive. Function: Online function code: order
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Data quality info: Data quality: Scope: Scope: Hierarchy level: Scope code: repository Level description: Scope description: Other: NOAA National Centers for Environmental Information Lineage: Lineage: Process step: Process Step: Description: 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. Date and time: 2015-04-22T00:00:00
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Metadata maintenance: Maintenance information: Maintenance and update frequency: Maintenance frequency code: asNeeded Maintenance note: Bulk metadata change applied on 2023-06-23. See version control repository history for metadata change details.
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