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NOAA’s National Weather Service What’s now available in NDFD. Bob Bunge, Allan Darling, David Ruth, Arthur Taylor NWS Partners Workshop June 24, 2004. Experimental NDFD FTP service. 12 forecast elements from 117 Weather Forecast Offices New files posted near top of each hour
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NOAA’sNational Weather ServiceWhat’s now available in NDFD Bob Bunge, Allan Darling, David Ruth, Arthur TaylorNWS Partners WorkshopJune 24, 2004
Experimental NDFD FTP service • 12 forecast elements from 117 Weather Forecast Offices • New files posted near top of each hour • WMO GRIB v2 format • Grids for CONUS and 16 overlapping CONUS sectors • Spatial resolution at 5km • Temporal resolution at 3 hours for days 1-3 and 6 hours for days 4-7
Experimental NDFD FTP service • Digital Services Project Office Operations Team is considering proposal to: • Make individual WFO grids for first 2 (or 3) days available as received • Issue grid mosaics for days 1-7 on schedule 4x (or 6x) day • Benefits • No longer wait until top of the hour for WFO updates • Reduce need to download large, redundant files • Make apparent to users which forecasts have changed • Potentially allows WFOs to improve border consistency • Question • Which hours should full grid mosaics be issued?
Experimental NDFD Web Services • XML services • NDFD points in Extensible Markup Language (XML) • Element, forecast time, and point location requested by user application • Access via Simple Object Access Protocol • User-defined subgrids • NDFD subgrids in GRIB v2 • Element and grid domain requested by user application • Access via CGI-bin
Experimental NDFD Degrib output • Shape files (compatible with ESRI) • Points • Simple polygons • Merged polygons • netCDF • GrADS • Lat/lon grids • Projected grids • Float files • Comma Separated Variable files