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    • Integrated Global Radiosonde Archive (IGRA), Version 1 (Superseded)

    Metadata Updated: December 12, 2025

    Please note, this dataset has been superseded by a newer version (see below). Users should not use this version except in rare cases (e.g., when reproducing previous studies that used this version).Integrated Global Radiosonde Archive is a digital data set archived at the National Centers for Environmental Information (NCEI). The Integrated Global Radiosonde Archive (IGRA) consists of radiosonde and pilot balloon observations at over 1500 globally distributed stations. Observations are available for standard, surface, tropopause and significant levels. Variables include: Pressure, Temperature, Geopotential Height, Dewpoint, Depression, Wind Direction, and Wind Speed. The period of record varies from station to station, with many extending from 1905 to 2016. Station records for version 1 are available by contacting NCEI Customer Support. IGRA data originate from 11 different sources and have passed through a set of rigorous quality assurance procedures.

    Access & Use Information

    License: No license information was provided. If this work was prepared by an officer or employee of the United States government as part of that person's official duties it is considered a U.S. Government Work.

    Downloads & Resources

    Dates

    Metadata Date July 11, 2025
    Metadata Created Date December 12, 2025
    Metadata Updated Date December 12, 2025
    Reference Date(s) 2004-09 (publication)
    Frequency Of Update notPlanned

    Metadata Source

    Harvested from ncdc

    Other Data Resources

    Graphic Preview

    Upper air balloon

    Additional Metadata

    Resource Type Dataset
    Metadata Date July 11, 2025
    Metadata Created Date December 12, 2025
    Metadata Updated Date December 12, 2025
    Reference Date(s) 2004-09 (publication)
    Responsible Party NOAA National Centers for Environmental Information (Point of Contact)
    Contact Email
    Guid gov.noaa.ncdc:C00616
    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., 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., **This version has been superseded by a newer version. It is highly recommended for users to access the current version. Users should only access this superseded version for special cases, such as reproducing studies. If necessary, this version can be accessed by contacting NCEI.**
    Bbox East Long 180.00
    Bbox North Lat 90.00
    Bbox South Lat -90.00
    Bbox West Long -180.00
    Coupled Resource
    Frequency Of Update notPlanned
    Graphic Preview Description Upper air balloon
    Graphic Preview File https://www.ncei.noaa.gov/pub/data/metadata/images/C00975-8.png
    Graphic Preview Type PNG
    Harvest Object Id eb1b078c-e9ec-48a4-bb47-b2d20192f5e8
    Harvest Source Id 2cb3ef77-1683-4c2a-9119-dc65e50917c6
    Harvest Source Title ncdc
    Licence
    Lineage
    Metadata Language eng; USA
    Metadata Type geospatial
    Old Spatial {"type": "Polygon", "coordinates": [[[-180.0, -90.0], [180.0, -90.0], [180.0, 90.0], [-180.0, 90.0], [-180.0, -90.0]]]}
    Progress
    Spatial Data Service Type
    Spatial Reference System
    Spatial Harvester True
    Temporal Extent Begin 1905
    Temporal Extent End 2016

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