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NSF Unidata

Our mission is to transform the geosciences community, research, and education by providing innovative data services and tools.
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What is NSF Unidata?

U.S. National Science Foundation Unidata is a diverse community of education and research institutions with the common goal of sharing geoscience data and the tools to access and visualize that data. For more than 35 years, NSF Unidata has been providing data, software tools, and support to enhance Earth-system education and research. Funded primarily by the U.S. National Science Foundation, NSF Unidata is one of the University Corporation for Atmospheric Research (UCAR)'s Community Programs (UCP).

NSF Unidata's GitHub repositories contain code for software projects created or maintained by developers at the NSF Unidata Program Center. We actively encourage contributions to these projects in the form of issues and pull requests.

Participant Code of Conduct

If you're interested in contributing, please take a look at NSF Unidata's Contributor Code of Conduct.

Pinned Loading

  1. netcdf-c netcdf-c Public

    Official GitHub repository for netCDF-C libraries and utilities.

    C 590 291

  2. netcdf-java netcdf-java Public

    The Unidata netcdf-java library

    Java 190 81

  3. LDM LDM Public

    The Unidata Local Data Manager (LDM) system includes network client and server programs designed for event-driven data distribution, and is the fundamental component of the Unidata Internet Data Di…

    C 49 30

  4. MetPy MetPy Public

    MetPy is a collection of tools in Python for reading, visualizing and performing calculations with weather data.

    Python 1.4k 448

  5. awips2 awips2 Public

    Weather forecasting display and analysis package developed by NWS/Raytheon, released as open source software by Unidata.

    Java 214 83

  6. IDV IDV Public

    The Integrated Data Viewer (IDV) from Unidata is a framework for analyzing and displaying geoscience data.

    Java 90 38

Repositories

Showing 10 of 142 repositories
  • MetPy-benchmark Public

    Benchmarks for the MetPy project

    Unidata/MetPy-benchmark’s past year of commit activity
    1 MIT 2 0 0 Updated Apr 18, 2026
  • netcdf Public

    NetCDF Users Group (NUG)

    Unidata/netcdf’s past year of commit activity
    CSS 7 MIT 13 22 2 Updated Apr 16, 2026
  • MetPy Public

    MetPy is a collection of tools in Python for reading, visualizing and performing calculations with weather data.

    Unidata/MetPy’s past year of commit activity
    Python 1,410 BSD-3-Clause 447 318 (11 issues need help) 43 Updated Apr 16, 2026
  • netcdf-java Public

    The Unidata netcdf-java library

    Unidata/netcdf-java’s past year of commit activity
    Java 190 BSD-3-Clause 81 78 (2 issues need help) 0 Updated Apr 15, 2026
  • TdsConfig Public

    Contents of TDS configuration directories for several variants including a TDS serving all Unidata IDD data

    Unidata/TdsConfig’s past year of commit activity
    Jupyter Notebook 7 12 11 (1 issue needs help) 0 Updated Apr 15, 2026
  • pinned-actions-verifier Public

    Ensure your GitHub Actions workflows are secure by verifying that all external actions are pinned to a full commit SHA that exists on the default branch of the action repository.

    Unidata/pinned-actions-verifier’s past year of commit activity
    Shell 0 BSD-3-Clause 1 0 0 Updated Apr 15, 2026
  • tds Public

    THREDDS Data Server

    Unidata/tds’s past year of commit activity
    Java 79 BSD-3-Clause 28 31 (1 issue needs help) 1 Updated Apr 15, 2026
  • netcdf-c Public

    Official GitHub repository for netCDF-C libraries and utilities.

    Unidata/netcdf-c’s past year of commit activity
    C 590 BSD-3-Clause 291 264 14 Updated Apr 15, 2026
  • cftime Public

    Time-handling functionality from netcdf4-python.

    Unidata/cftime’s past year of commit activity
    Python 93 MIT 44 15 (1 issue needs help) 1 Updated Apr 14, 2026
  • siphon Public

    Siphon - A collection of Python utilities for retrieving atmospheric and oceanic data from remote sources, focusing on being able to retrieve data from Unidata data technologies, such as the THREDDS data server.

    Unidata/siphon’s past year of commit activity
    Python 241 BSD-3-Clause 73 70 (2 issues need help) 16 Updated Apr 14, 2026
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