[RegCNET] CFL violation

[pizzigalli at nemesi.le.isac.cnr.it]

Dear all,
I’m running RegCM4 and it is showing the following error:

******* OPENING NEW OUTPUT FILES:  1991010100
 OPENING NEW OUT FILE: ./output//ATM.1991010100
 OPENING NEW SRF FILE: ./output//SRF.1991010100
 OPENING NEW RAD FILE: ./output//RAD.1991010100
 OUT-history written date =    1991010100.00000
 LAND variables written at   1991010100   2.50000000000000
 Writing rad fields at ktau =            1  1991010100
 WHUUUUBBBASAAAGASDDWD!!!!!!!!!!!!!!!!
 No more atmosphere here....
 CFL violation detected, so model STOP
 #####################################
 #            DECREASE DT !!!!       #
 #####################################
  -------------- FATAL CALLED ---------------
  Fatal in file: tend.F90 at line:   2280
  CFL VIOLATION
  -------------------------------------------

I tried to decrease dt but the same problem is coming again.
Actually I’m using:

 radfrq  =    30.,
   abemh   =    18.,
 abatm   =   540.,
 dt      =   180.0,

and a spatial resolution
ds=60.



 Please help
 Thank in advance




Claudia Pizzigalli

Centro Euro-Mediterraneo per i Cambiamenti Climatici - CMCC - Lecce

CNR-ISAC Istituto di Scienze dell'Atmosfera e del Clima, sede di Lecce

Str. Prov. Lecce-Monteroni km 1,200
73100 Lecce, Italy

Phone: +39 0832297107