Reminder: Unidata TDS Upgrade June 3, 2013

As of June 3, 2013, THREDDS Data Server (TDS) version 4.2 will no longer be in use on Unidata's servers. This is important because many of the variable names in all GRIB files have been changed in TDS 4.3. This affects almost all the model data served at Unidata.

As previously described in this post, the Unidata Program Center's THREDDS Data Server (TDS) using the domain name "motherlode.ucar.edu" will be upgraded to use TDS version 4.3 at this time. Since late March, a TDS version 4.3 server using the domain name "thredds.ucar.edu" has been in operation. The domain name "motherlode.ucar.edu" will not work for TDS access after August 1, 2013. (Other motherlode access methods will continue to work as they currently do.)

The main changes between TDS 4.2 and 4.3 are listed here.

IDV users note: If you have not yet upgraded to IDV version 4.0 or later, you will need to do so now. The current version is IDV 4.0u1.

The timeline for transitioning from the TDS 4.2 to the 4.3 server at Unidata is as follows:

  • Friday, March 22nd, 2013 - the official data access URL for the Unidata TDS changed to thredds.ucar.edu. This address resolves to a TDS 4.3 server (the latest version).
  • Monday, June 3rd, 2013 - the previous data access URL, motherlode.ucar.edu, will be changed to use the TDS 4.3 server. This marks the end of TDS 4.2 access on Unidata systems. (Note that the changeover was originally planned for Saturday, June 1st.)
  • Thursday, August 1st, 2013 - the data access URL motherlode.ucar.edu will no longer function. All users of the Unidata TDS should transition to using thredds.ucar.edu by this time.

Please start changing your software now to use thredds.ucar.edu and TDS 4.3.

See this post for additional details and background.

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