[Dart-dev] DART/branches Revision: 12763

[dart at ucar.edu]

nancy at ucar.edu
2018-08-07 14:09:20 -0600 (Tue, 07 Aug 2018)
155
fix up the description of the damping.  the given
model level is where the damping should go to 0,
so it actually starts at 'cutoff' distance below that.




Modified: DART/branches/recam/models/cam-fv/model_mod.html
===================================================================
--- DART/branches/recam/models/cam-fv/model_mod.html	2018-08-06 15:40:37 UTC (rev 12762)
+++ DART/branches/recam/models/cam-fv/model_mod.html	2018-08-07 20:09:20 UTC (rev 12763)
@@ -337,8 +337,8 @@
     <TD> integer </TD>
     <TD>Because the top of the model is highly damped it is recommended
 to NOT assimilate observations in the top model levels.  The units here
-are CAM model level numbers.  Set it to the lowest model level (the highest
-number) where damping is applied in the model.  
+are CAM model level numbers.  Set it to equal or below the lowest model 
+level (the highest number) where damping is applied in the model.  
 </TD></TR>
 
 <TR><TD> model_damping_ends_at_level </TD>
@@ -345,9 +345,10 @@
     <TD> integer </TD>
     <TD>Set this to the lowest model level (the highest number) where
 model damping is applied.  Observations below the 'no_obs_assim_above_level'
-cutoff but close enough to the model top to have an impact during
-assimilation will have their impacts decreased smoothly in model levels
-above this limit.
+cutoff but close enough to the model top to have an impact during the
+assimilation will have their impacts decreased smoothly to 0 at this
+given model level. The assimilation should make no changes to the model
+state above the given level.
 </TD></TR>
 
 <TR><TD>state_variables </TD>