IDD and NOAAPort

Status Report: April 2014 - September 2014

Mike Schmidt, Jeff Weber, Tom Yoksas

Strategic Focus Areas

The IDD/NOAAPort group's work supports the following Unidata funding proposal focus areas:

  1. Enable widespread, efficient access to geoscience data
    A project like the IDD demonstrates how sites can employ the LDM to move data in their own environments.
  2. Develop and provide open-source tools for effective use of geoscience data
    The IDD is powered by the Unidata LDM-6 which is made freely available to all. The Unidata NOAAPort ingest package is being used by a variety of university and non-university community members. Both the LDM and NOAAPort ingest packages are being bundled by Raytheon in AWIPS-II.
  3. Provide cyberinfrastructure leadership in data discovery, access, and use
    The community-driven IDDs provide push data services to users an ever increasing community of global educators and researchers
  4. Build, support, and advocate for the diverse geoscience community
    Providing access to data in real-time is a fundamental Unidata activity.
    The IDD-Brasil, the South American peer of the North American IDD operated by the UPC, is helping to extend real-time data delivery outside of the U.S. to countries in South America and Africa. The Universidad de Costa Rica is experimenting with relaying data received in the IDD to Colombia.

Activities Since the Last Status Report

Internet Data Distribution (IDD)

  • Unidata receives High Resolution Rapid Refresh (HRRR) grids (both 2D and 3D fields) in an LDM/IDD feed from NOAA/GSD. These products are being made available from the The challenge in making the data routinely available is its large data volume which is on the order of ~8 GB for the pressure level output and ~10 GB/hour for the sigma level output.

    The HRRR is being experimentally served at: (.xml for machines)

  • Other data sets we are actively exploring with NOAA/GSD/ESRL are:

  • HRRR and ESTOFS data are scheduled to be added to NOAAPort in mid to late September. The following TINs announced these additions:

    Briefly, these additions will be comprised of:

    • HRRR: 81 products, hourly F00-15 each hour. CONUS 2.5km grid184. ~44 GB/day
    • ESTOFS: 3 products, hourly F00-F180, 00, 06, 12, 18z runs. CONUS 2.5km grid, Puerto Rico 1.25 km grid. ~2 GB/day

    HRRR fields and forecasts times that are not included in the NOAAPort expansion will be evaluated as additions to the CONDUIT IDD datastream.

  • The UPC continues to relay FNMOC and the CMC data model output directly to the community. FNMOC provides the COAMPS and NAVGEM model output and the CMC provides the GEM model output. Unidata has provided access to these data for the past 8 years, but on a "point-to-point" basis. GEM model output was converted from GRIB1 to GRIB2 in January. The CMC is now relaying output of there new hi-resolution (15 km) GEM model to Unidata.

NOAAPort Data Ingest

  • The NOAAPort SBN, which transitioned from DVB-S to DVB-S2 in April/May 2011, is being upgraded to support just over 60 mbps throughput in aggregate. The UPC has been testing ingest of the high speed broadcast since the onset of a "dual illumination" period (a 45 day window in which existing and new SBN transmissions are active) on August 18.

  • Unidata's NOAAPort ingest package is bundled with current versions of the LDM. The current LDM release is v6.12.5.

  • Raytheon bundles a version LDM-6 with AWIPS-II and is actively using Unidata's NOAAPort ingest code at a variety of NOAA offices. Raytheon has been providing the UPC code modifications and GRIB table updates needed to support new data to be added to in the NOAAPort expansion. when possible

Relevant IDD Metrics

  • Approximately 600 machines at 235 sites are running LDM-6 and reporting real time statistics to Unidata. Unidata staff routinely assist in the installation and tuning of LDM-6 at user sites as a community service.

    A number organizations/projects continue use the LDM to move substantial amounts of data that do not report statistics to Unidata: NOAA, NASA, USGS, USACE, Governments of Spain, South Korea, private compaines, etc.).

  • IDD toplevel relay node,

    The cluster approach to toplevel IDD relay, has been operational at the UPC since early summer 2005.

    The cluster, described in the June 2005 CommunitE-letter article Unidata's IDD Cluster, routinely relays data to more than 700 downstream connections. Data input to the cluster nodes now routinely averages about 20 GB/hr (~0.5 TB/day); average data output from the entire cluster exceeds 1.3 Gbps (~14 TB/day); peak rates routinely exceed 2.2 Gbps (which would be ~24 TB/day if the rate was sustained).

    The following shows a snapshot by feedtype of the data being received on one node of the Unidata toplevel IDD relay,

    Data Volume Summary for
    Maximum hourly volume  27500.168 M bytes/hour
    Average hourly volume  16285.983 M bytes/hour
    Average products per hour     308585 prods/hour
    Feed                           Average             Maximum     Products
                         (M byte/hour)            (M byte/hour)   number/hour
    NEXRAD2                7042.426    [ 43.242%]     9842.548    71041.318
    CONDUIT                2531.718    [ 15.545%]     4401.147    50981.750
    NEXRAD3                2228.789    [ 13.685%]     2924.057    97256.909
    NGRID                  1624.678    [  9.976%]     3372.235    21758.409
    FNMOC                  1166.527    [  7.163%]     6643.485     3242.273
    FSL2                    835.136    [  5.128%]     1613.164     1013.523
    HDS                     358.902    [  2.204%]      692.099    18245.659
    NIMAGE                  160.874    [  0.988%]      292.486      193.727
    GEM                      81.814    [  0.502%]      463.448      792.295
    FNEXRAD                  65.020    [  0.399%]      110.009       48.318
    NOTHER                   57.996    [  0.356%]      365.100     1162.955
    IDS|DDPLUS               53.046    [  0.326%]       66.749    42150.591
    EXP                      36.403    [  0.224%]       74.339      326.909
    UNIWISC                  36.218    [  0.222%]       84.984       19.591
    LIGHTNING                 5.817    [  0.036%]       15.456      348.682
    DIFAX                     0.512    [  0.003%]        1.968        0.636
    GPS                       0.109    [  0.001%]        1.197        1.045
    Currently six real server nodes operating in one location on the UCAR campus (in the UCAR co-location facility in FL-2) and two directors comprise The cluster approach to IDD relay has been adopted by NOAA/GSD, Penn State and Texas A&M.