NFS Unidata will be updating the underlying server technology for our Maven artifacts server (artifacts.unidata.ucar.edu) on Tuesday, January 20th, around 12:00 MST (UTC-7). While internal testing using both Maven and Gradle indicates that the transition should be transparent, users are encouraged to reach out to support if they encounter any issues.

The NSF Unidata THREDDS development team is happy to announce the release of version 5.9.1 of the netCDF-Java/Common Data Model (CDM) library. This release contains a number of bug fixes for user reported problems, including a major bug that can be triggered in multithreaded environments.

The NSF Unidata THREDDS development team is happy to announce the release of version 5.9.0 of the netCDF-Java/Common Data Model (CDM) library. This release contains a number of enhancements, bug fixes for user reported problems, as well as 3rd party dependency updates.

The NSF Unidata THREDDS development team released netCDF-Java 5.8.0 on May 8th, 2025. This release contains a number of upgrades to third party libraries, a variety of bug fixes, and several new features and improvements.

The NSF Unidata THREDDS development team released netCDF-Java 5.7.0 on January 6th, 2025. This release contains a number of security upgrades to third party libraries, a variety of bug fixes, and several new features and improvements.

The NSF Unidata THREDDS development team released netCDF-Java 5.6.0 on July 16th, 2024. This release contains a number of security upgrades to third party libraries, a variety of bug fixes, and several new features and improvements.

The Unidata THREDDS development team released netCDF-Java 5.5.2 on January 5th, 2022; this release addresses an issue discovered in version 5.5.1 for users running JDK 8. For more information, please visit the GitHub release page at https://github.com/Unidata/netcdf-java/releases/tag/v5.5.2. Artifacts from the 5.5.2 release can be obtained from our artifacts server following these instructions. ToolsUI and netCDFAll can be obtained from the downloads section of the Unidata website.

The Unidata THREDDS development ream released netCDF-Java 5.5.1 on December 20th, 2021. In addition to several bug fixes and dependency upgrades, this is the first version of netCDF-Java that has read support for the Zarr data model. For more inforamtion, please visit the GitHub release page at https://github.com/Unidata/netcdf-java/releases/tag/v5.5.1.

The Unidata Program Center is hiring! We are looking for a scientific software developer to join our team in creating and maintaining software and data services to support the geosciences.

Specifically, we are looking for a developer to join our open source efforts related to the suite of Thematic Real-time Environmental Distributed Data Services (THREDDS) projects. You'll work on projects like netCDF-Java, the THREDDS Data Server, and the Siphon data access library.