This archive contains answers to questions sent to Unidata support through mid-2025. Note that the archive is no longer being updated. We provide the archive for reference; many of the answers presented here remain technically correct, even if somewhat outdated. For the most up-to-date information on the use of NSF Unidata software and data services, please consult the Software Documentation first.
Notice of service interruption: From 6 am to 6 pm MDT tomorrow, October 11, a scheduled power down in the NCAR main machine room will affect a number of Unidata data services: machine Service(s) affected -----------------------+---------------------------------------------- iddb.unidata.ucar.edu - IDD backup top level relay atm.ucar.edu - TDS, ADDE and decoded GEMPAK files Needed actions: - sites requesting IDD feeds from iddb.unidata.ucar.edu should switch feeds to idd.unidata.ucar.edu - sites using TDS and/or ADDE services on atm.ucar.edu should use those same services on motherlode.ucar.edu (which hosts thredds.ucar.edu and adde.ucar.edu) or idd.ssec.wisc.edu (which hosts adde.ssec.wisc.edu). Best regards, Unidata User Support --