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CFL error in running WRF

This post was from a previous version of the WRF&MPAS-A Support Forum. New replies have been disabled and if you have follow up questions related to this post, then please start a new thread from the forum home page.

Dear WRF experts,

I am running a sample tutorial for 4DVar from the WRF documentation. I dont know why I am getting a cfl error. I am using WRF v4.2.2. The WRF3DVar works fine but the 4DVar does not work!

Attached are the namelist and rsl files.

Some solutions that I tried:

(a) I already reduced the timestep but still get the same error.

(b) I specified the epssm to 0.5 in the &dynamics section of the namelist but got this error:

(c) I tried everything mentioned here:
but still not working!

d01 2008-02-05_12:00:00  This input data is not V4:  OUTPUT FROM REAL_EM V3.9pre#2 PREPROCESSOR
d01 2008-02-05_12:00:00  Input data is acceptable to use:
 Tile Strategy is not specified. Assuming 1D-Y
WRF TILE   1 IS      1 IE     45 JS     41 JE     60
-------------- FATAL CALLED ---------------
FATAL CALLED FROM FILE:  <stdin>  LINE:    2033

I'll appreciate any help on this!



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I have moved this topic to the WRFDA section of the forum as you are having trouble with a specific DA topic. Someone from that department will try to respond to your inquiry soon.