Version 6.11.2 of the LDM has been released.

This version modifies the rejection of a subscription by a downstream LDM. Before, both FEEDME subscriptions and NOTIFYME subscriptions were treated identically: if a downstream site had a REQUEST entry for feedtype ANY and pattern ".*", then a subsequent, default notifyme(1) execution would be rejected by the upstream LDM because it duplicated the REQUEST-based subscription. Now, the upstream LDM will not reject the notifyme(1)-based subscription because the two subscription categories are handled separately.

This version can be downloaded at https://www.unidata.ucar.edu/downloads/ldm.

This version's homepage.

Members of the Unidata Program Center staff will be attending the 93nd annual American Meteorology Society meeting, January 6-10 2013, in Austin, Texas. Unidata will be in Booth 524 in the exhibit hall (map); feel free to stop by to talk with us. The booth will feature live, hands-on demonstrations of Unidata software and services, including a look at the current state of the AWIPS II environment. Come and talk with the developers about what's coming up and what you'd like to see.

A new stable release of the NetCDF-Java/Common Data Model (CDM) library and the THREDDS Data Server (TDS), version 4.3.15, is now available on the NetCDF Java Library download page and the THREDDS Data Server page. We recommend that you upgrade to the current stable version as soon as possible in all cases.

McIDAS-X Addendum v2009m aka v2012.2 has been released to make changes to the Unidata McIDAS-X/-XCD 2009 distribution.

This cumulative set of bugfixes and enhancements in Unidata McIDAS-X v2009m includes all SSEC v2012.2 modifications, a new XRD addition, GRAYOVER, some small Unidata MCGUI modifications, and all previous updates to v2009.  Unidata McIDAS-X is available to registered users in a gzip-compressed tar file.

For more information on the changes included in v2009m, please see the v2009m addendum information.  To download the v2009m distribution, please visit the McIDAS-X download page after logging into the Unidata website.

Note: Unidata McIDAS is freely  available to U.S. university users.  Access by non-U.S. educational users and members in good standing of the UW/SSEC McIDAS User's Group (MUG) is granted on a case-by-case basis; please send email to support-mcidas@unidata.ucar.edu for details.  Commercial and governmental users wishing to use McIDAS should contact the MUG directly by sending email to mug@ssec.wisc.edu.

Scientific data formats such as NetCDF have made great strides in areas like interoperability, scalability, and data compression. By comparison, methods for representing the uncertainty inherent in the values stored in scientific data sets are less robust. A group organized by researchers from the National Research Council of Italy's Institute for Atmospheric Pollution Research is trying to address this issue by creating a set of conventions for the representation of uncertainty values associated with data stored in NetCDF files.

A discussion paper describing ideas for storing uncertainty values is available, and an electronic mail list has been created to allow broad community discussion of the proposal.