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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.

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  1. netcdf-c netcdf-c Public

    Official GitHub repository for netCDF-C libraries and utilities.

    C 581 289

  2. netcdf-java netcdf-java Public

    The Unidata netcdf-java library

    Java 184 82

  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 47 29

  4. MetPy MetPy Public

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

    Python 1.4k 445

  5. awips2 awips2 Public

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

    Java 208 82

  6. IDV IDV Public

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

    Java 89 39

Repositories

Showing 10 of 141 repositories
  • netcdf4-python Public

    netcdf4-python: python/numpy interface to the netCDF C library

    Unidata/netcdf4-python’s past year of commit activity
    Cython 822 MIT 271 154 1 Updated Feb 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 1,391 BSD-3-Clause 445 319 (11 issues need help) 42 Updated Feb 16, 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 239 BSD-3-Clause 73 71 (2 issues need help) 11 Updated Feb 16, 2026
  • MetPy-benchmark Public

    Benchmarks for the MetPy project

    Unidata/MetPy-benchmark’s past year of commit activity
    1 MIT 2 0 0 Updated Feb 14, 2026
  • awips2 Public

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

    Unidata/awips2’s past year of commit activity
    Java 208 MIT 82 83 0 Updated Feb 14, 2026
  • science-gateway Public

    Unidata Science Gateway on the NSF Jetstream2 Cloud

    Unidata/science-gateway’s past year of commit activity
    Jupyter Notebook 20 BSD-3-Clause 13 6 13 Updated Feb 13, 2026
  • netcdf-java Public

    The Unidata netcdf-java library

    Unidata/netcdf-java’s past year of commit activity
    Java 184 BSD-3-Clause 82 74 (2 issues need help) 0 Updated Feb 13, 2026
  • tds Public

    THREDDS Data Server

    Unidata/tds’s past year of commit activity
    Java 78 BSD-3-Clause 28 31 (1 issue needs help) 1 Updated Feb 12, 2026
  • .github Public

    Repository to hold default community health files for your organization

    Unidata/.github’s past year of commit activity
    0 2 0 0 Updated Feb 12, 2026
  • IDV Public

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

    Unidata/IDV’s past year of commit activity
    Java 89 39 11 6 Updated Feb 11, 2026
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