Archived Data Access

Unidata is a data facilitator, not a data archive center. Unidata provides mechanisms for accessing some archived data sets and case studies, and some Unidata sites do archive our data streams in raw, encoded form.

Case Study Library

Case Studies A variety of meteorological case studies of unique atmospheric phenomena data, including data and information contributed from the Unidata community.

Explore the case study library

UNIWISC IDD Datastream

UNIWISC The Unidata-Wisconsin datastream products, archived at the University of Wisconsin, Madison's Space Science and Engineering Center (SSEC) since 1991.

Access UNIWISC datastream archives

TDS IDD Data Access

THREDDS data Server Much of the realtime data available over the Unidata Internet Data Distribution (IDD) is available via the THREDDS Data Server on Unidata's motherlode data server.

View the IDD data in the TDS

RAMADDA Data Repository

RAMADDA Unidata's main RAMADDA server (hosted on Unidata's motherlode data server) contains access to a variety of datasets including the full IDD feed, Case Studies and other project data.

Explore the RAMADDA data repository

Short-Term Data Archive

Data Archive A short-term data archive hosted on Unidata's motherlode data server contains both raw and decoded IDD data.

Visit the short-term data archive

NCAR Research Data Archive

NCAR The Research Data Archive hosts a permanent archives of IDD global observational data and gridded model data on NCAR's Mass Storage System.

Access the NCAR Research Data Archive