Due to the current gap in continued funding from the U.S. National Science Foundation (NSF), the NSF Unidata Program Center has temporarily paused most operations. See NSF Unidata Pause in Most Operations for details.
The Unidata Local Data Manager (LDM) system includes network client and server programs designed for event-driven data distribution, and is the fundamental component comprising the Unidata Internet Data Distribution (IDD) system.
If you use the LDM and want to provide a DOI/citation, see How to Acknowledge Unidata.
Didn't find a solution in the LDM documentation? Try the following:
Attend the annual LDM training workshop at the UPC
A basic tutorial demonstrates common LDM features
View the tutorial from
For support questions related to the IDD:
Questions about LDM Support can be sent to: support-ldm@unidata.ucar.edu
To report a potential security issue, contact: security@unidata.ucar.edu
LDM code
Git Recipes
Unidata embarks on new projects to help make its data and tools available to the Earth Systems Science community. The following are a list of LDM-related projects between the Unidata Program Center and external collaborators.
The Unidata community of over 160 universities is building a system for disseminating near real-time earth observations via the Internet. Unlike other systems, which are based on data centers where the information can be accessed, Unidata Internet Data Distribution (IDD) is designed so a university can request that certain data sets be delivered to computers at their site as soon as they are available from the observing system. The IDD system also allows any site with access to specialized observations to inject the dataset into the IDD for delivery to other interested sites.
Unidata Local Data Manager (LDM) is a collection of cooperating programs that select, capture, manage, and distribute arbitrary data products. The system is designed for event-driven data distribution of the kind used in the Unidata Internet Data Distribution project.
More about the IDD