Mesoscale Parallel Experiment Change Log
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
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
RADTN and CHKOUT were modified to ensure that the correct zenith angle is used to compute the
instantaneous incoming/outgoing solar fluxes.
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.
Removed changes to parameters in the patchy snow cover formulation which will decrease the
snow depth for 100 percent snow cover (SNUP, SALP).
||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).
"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
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
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