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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 606 311

  2. netcdf-java netcdf-java Public

    The Unidata netcdf-java library

    Java 200 88

  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 52 30

  4. MetPy MetPy Public

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

    Python 1.5k 460

  5. awips2 awips2 Public

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

    Java 233 84

  6. IDV IDV Public

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

    Java 92 38

Repositories

Showing 10 of 132 repositories
  • 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 233 MIT 84 81 2 Updated Nov 10, 2026
  • tds Public

    THREDDS Data Server

    Unidata/tds's past year of commit activity
    Java 83 BSD-3-Clause 27 26 (1 issue needs help) 1 Updated Nov 10, 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 1,458 BSD-3-Clause 460 327 (11 issues need help) 97 Updated Nov 9, 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 247 BSD-3-Clause 74 71 (2 issues need help) 16 Updated Nov 9, 2026
  • MetPy-benchmark Public

    Benchmarks for the MetPy project

    Unidata/MetPy-benchmark's past year of commit activity
    1 MIT 2 0 0 Updated Nov 7, 2026
  • usg-vm-stacks Public

    Configuration for services/servers running on the NSF Jetstream2 Cloud as part of the NSF Unidata Science Gateway

    Unidata/usg-vm-stacks's past year of commit activity
    Shell 0 BSD-3-Clause 2 2 0 Updated Nov 7, 2026
  • ldm-docker Public

    Dockerized LDM

    Unidata/ldm-docker's past year of commit activity
    Tcl 16 BSD-3-Clause 14 1 0 Updated Nov 7, 2026
  • netcdf-cxx4 Public

    Official GitHub repository for netCDF-C++ libraries and utilities.

    Unidata/netcdf-cxx4's past year of commit activity
    C++ 153 58 58 2 Updated Nov 6, 2026
  • netcdf-java Public

    The Unidata netcdf-java library

    Unidata/netcdf-java's past year of commit activity
    Java 200 BSD-3-Clause 88 71 (2 issues need help) 2 Updated Nov 6, 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 Nov 5, 2026
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