05 December 2003 ATREC Extratropical Cyclone Simulation


Description:  Simulated atmospheric fields were generated using version 2.0.3.1 of the WRF model (ARW core).  The simulation was initialized at 00 UTC 05 December 2003 with 1° GFS data and then run for 24 hours on a single 1070 x 1070 grid point domain with 2-km horizontal resolution and 50 vertical sigma levels.  The simulation employed the following parameterizations:
  • WRF single-moment 6-class (WSM6) microphysics
  • Yonsei University (YSU) planetary boundary layer
  • RRTM/Dudhia radiation
  • NOAH land-surface model
  • Explicit convection (i.e. no cumulus parameterization)
Current Datasets:  Two separate datasets were generated for this case.  All data is stored in IDV-viewable netcdf files with the standard GIFTS cube format (i.e. 128 x 128 grid points on the 101 AIRS pressure levels).

Dataset 1:  Data with 4-km horizontal resolution is available once each hour from 12 UTC 05 December until 00 UTC 06 December.  The 4-km data was obtained by coarsening the model-simulated data by a factor of two.  This coarsened dataset contains 4x4 GIFTS cubes for each output time for a total of 208 cubes.  The total dataset size is 17 Gb.

Dataset 2:  Data with 2-km horizontal resolution is available every 5 minutes from 16 UTC until 18 UTC during 05 December.  This uncoarsened dataset contains 8x8 GIFTS cubes for each output time for a total of 1600 cubes during the two-hour period.  The total dataset size is 130 Gb.  Since this dataset contains 2-km data, each GIFTS cube is actually only 1/4 the geographical size of prior GIFTS cubes.

Simulated Atmospheric Field Images:

Dataset 1:  Hourly Data

Dataset 2:  5-Minute Data

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