HRRR Model Output

Status Report: April 2013 - September 2013

Linda Miller, Jeff Weber

Current HRRR Activity

Unidata has been working closely with NOAA/GSD for decades and this is another example of how this relationship continues to deliver to the community. The High Resolution Rapid Refresh (HRRR) output is the latest collaborative effort between Unidata and NOAA/GSD. There are plans to also include the Flow-following finite-volume Icosahedral Model (FIM) output as well as we work through the details of making this high resolution model output available, with services. To date Unidata has gained two beta sites to test the ingestion of such large model output, one in the educational sector (ISU) and the other in the commercial sector (Media Logic).



Current Issues

  • Volume ~ 9 GB/Hour
  • GRIB Table and parameters
      • The name spaces are not standard and this provides some added difficulty when using the data. i.e. CIn instead of CIN..other non-standard parameters are: uC, uSTRM, uW, vC, vSTRM, VuS, Vvs. We are working with GSD providing feedback and they are aware of the issue. Two modeling groups are working on this project adding to the confusion at NOAA. There are many UNDEFINED fields that we suspect are outgoing and incoming short and long wave radiation, but have not been able to verify via GSD as of yet. There are some GRIB table issues that need to be worked out and Unidata is working towards that end. The current GRIB tables for the HRRR can be found at:
      http://ruc.noaa.gov/hrrr/GRIB2Table_hrrr_2d.txt
      ..and the welcome page is at:
      http://rapidrefresh.noaa.gov/HRRR/Welcome.cgi
  • IDV use...plotting surface temperatures, for a full run, clobbered a 25GB RAM space Mac
  • Subsetting and other services will be required for all but the mightiest of new machines

Beta Ingest Sites

    Academic

  • Daryl Hertzmann at Iowa State University has graciously hosted the data for the community for the past few months
  • Access
  • Usage statistics

Sample IDV Imagery


  • HRRR Surface Temperature
  • HRRR Surface Temperature QT movie
  • HRRR V component of vertical shear
  • HRRR V component of vertical shear QT movie

    • Relevant Metrics

  • ~9GB/Hour, or ~1.5TB/week

    • THREDDS Access

    http://lead.unidata.ucar.edu/thredds/catalog.html .xml for machines

    Prepared October 2013