Historical Unidata Internet Data Distribution (IDD) Global Observational Data 

This dataset contains the historical Unidata Internet Data Distribution (IDD) Global Observational Data that are derived from real-time Global Telecommunications System
(GTS) reports distributed via the Unidata Internet Data Distribution System (IDD).
Reports include surface station (SYNOP) reports at 3-hour intervals,
upper air (RAOB) reports at 3-hour intervals, surface station (METAR) reports at 1-hour intervals, and
marine surface (BUOY) reports at 1-hour intervals.  Select variables found in all report types
include pressure, temperature, wind speed, and wind direction.  Data may be available at mandatory or significant levels from 1000 millibars to 1 millibar, and at surface levels.
Online archives are populated daily with reports generated two days prior to the current date.

To Access Resource:

Questions? Email Resource Support Contact:

  • datahelp@ucar.edu

Temporal Range

  • Begin:  1970-01-01
    End:  2029-12-31

Keywords

Resource Type dataset
Temporal Range Begin 1970-01-01
Temporal Range End 2029-12-31
Temporal Resolution N/A
Bounding Box North Lat N/A
Bounding Box South Lat N/A
Bounding Box West Long N/A
Bounding Box East Long N/A
Spatial Representation N/A
Spatial Resolution N/A
Related Links

Related Resource #1 : Unidata IDD homepage

Related Resource #2 : IDD Surface and Upper Air Observations available from the Unidata THREDDS server

Related Resource #3 : IDD Surface and Upper Air observations available from the Unidata RAMADDA server

Related Resource #4 : DDPLUS text files available from the Unidata RAMADDA server
Additional Information N/A
Resource Format NetCDF
Standardized Resource Format NetCDF
Asset Size 9171545.175 MB
Legal Constraints

Creative Commons Attribution 4.0 International License
Access Constraints None
Software Implementation Language N/A

Resource Support Name N/A
Resource Support Email datahelp@ucar.edu
Resource Support Organization N/A
Distributor NSF NCAR Geoscience Data Exchange
Metadata Contact Name N/A
Metadata Contact Email datahelp@ucar.edu
Metadata Contact Organization NSF NCAR Geoscience Data Exchange

Author Unidata, University Corporation for Atmospheric Research
Publisher NSF National Center for Atmospheric Research
Publication Date 2003-10-31
Digital Object Identifier (DOI) https://doi.org/10.5065/9235-WJ24
Alternate Identifier d336000
Resource Version N/A
Topic Category climatologyMeteorologyAtmosphere
Progress onGoing
Metadata Date 2025-10-09T01:46:20Z
Metadata Record Identifier edu.ucar.gdex::d336000
Metadata Language eng; USA
Suggested Citation Unidata, University Corporation for Atmospheric Research. (2003). Historical Unidata Internet Data Distribution (IDD) Global Observational Data. NSF National Center for Atmospheric Research. https://doi.org/10.5065/9235-WJ24. Accessed 09 October 2025.

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