Mesoscale Parallel Experiment Change Log

Experiment Name:  Eta-12 with changes to the Eta land-surface physics, bias adjustment of multi-sensor precipitation analyses using daily gauge data, and the assimilation of GOES-12 radiances

When Who What
2003/12/18/12 Ek, Mitchell
  • Changes to two parameters (SNUP, SALP) in the snow-cover fraction formulation so as to decrease snow cover fraction (and hence decrease snow albedo) for a given snowdepth (given snow water equivalent) below a (now higher) threshhold for the snowdepth.
  • Diurnally adjusted surface albedo fed to Noah LSM model
  • 2003/12/15/12 Ferrier
  • RADTN and CHKOUT were modified to ensure that the correct zenith angle is used to compute the instantaneous incoming/outgoing solar fluxes.
  • 2003/12/03/00 Rogers
  • On 11/4 the KH array was added to the ETAX model restart file for the CMAQ air quality model. The location in the file for the KH array caused the fields which are read in at the end of the restart file when the model is restarted (e.g., for the 60-84h extension) to be corrupted. This was fixed as of the given date; all 63-84 h ETAX results between 11/4 and 12/2/03 should be viewed with suspicion.
  • 2003/12/18/12 Ek, Mitchell
  • Removed changes to parameters in the patchy snow cover formulation which will decrease the snow depth for 100 percent snow cover (SNUP, SALP).
  • 2003/12/02/00 H.-M. Lin, Ferrier
  • A minor bug in determining the cloud amounts and the cloud-base levels in the longwave calculations was corrected for clouds at the ground (i.e., fog).
  • 2003/12/02/00 Y. Lin
  • "Inflation" of the hourly multi-sensor precipitation analyses now performed in the budget history calculation step instead of inside the forecast model, and the inflation factor was reduced from 1.2 to 1.1
  • 2003/11/26/00 Rogers
  • Due to missed cycles caused by GPFS problems on dev machine, EDAS was restarted from ops 12-km EDAS atmospheric states and last parallel EDAS (12Z 11/21) soil states
  • 2003/10/31/00 Ferrier
  • Fixed bug in parallel eta-12 to use the correct zenith angle for incoming and outgoing solar radiation at the surface, and outgoing solar radiation at the top of the atmosphere.
  • Page Last Modified: December 3, 2003