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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 591 292

  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 217 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
  • ramadda-docker Public

    Dockerized RAMADDA

    Unidata/ramadda-docker’s past year of commit activity
    Shell 0 BSD-3-Clause 2 1 0 Updated Apr 23, 2026
  • tomcat-docker Public

    Security-hardened Tomcat container for thredds-docker and ramadda-docker

    Unidata/tomcat-docker’s past year of commit activity
    Shell 66 BSD-3-Clause 69 0 1 Updated Apr 23, 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 217 MIT 83 83 0 Updated Apr 23, 2026
  • netcdf-fortran Public

    Official GitHub repository for netCDF-Fortran libraries, which depend on the netCDF C library. Install the netCDF C library first.

    Unidata/netcdf-fortran’s past year of commit activity
    Fortran 268 103 116 0 Updated Apr 22, 2026
  • docker-nctests Public

    Docker configuration files for building netCDF regression testing containers.

    Unidata/docker-nctests’s past year of commit activity
    Shell 5 2 0 0 Updated Apr 22, 2026
  • UDUNITS-2 Public

    API and utility for arithmetic manipulation of units of physical quantities

    Unidata/UDUNITS-2’s past year of commit activity
    C 67 40 49 2 Updated Apr 22, 2026
  • tds Public

    THREDDS Data Server

    Unidata/tds’s past year of commit activity
    Java 79 BSD-3-Clause 28 29 (1 issue needs help) 1 Updated Apr 21, 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 21, 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 1,414 BSD-3-Clause 448 318 (11 issues need help) 45 Updated Apr 20, 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 20, 2026
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