[Wrf-users] Facing problems with real.exe (evert, p_top, max_dz)

[Jose Augusto Paixão Veiga]

Dear users,

I am forcing WRF (version 3.5) with HadGEM-2 data and in my small test with
36 hours I've successfully built the met_em_d* files during the
pre-processing.  However, I've been failing to create the appropriate
boundary conditions to further run the model.

The error message bellow arises as soon as I run the real.exe program:


 Using sfcprs  to compute psfc

 d01 2005-03-01_00:00:00 You need one of three things:

 d01 2005-03-01_00:00:00 1) More eta levels to reduce the dz: e_vert

 d01 2005-03-01_00:00:00 2) A lower p_top so your total height is reduced:
p_top_requested

 d01 2005-03-01_00:00:00 3) Increase the maximum allowable eta thickness:
max_dz

 d01 2005-03-01_00:00:00 All are namelist options

 -------------- FATAL CALLED ---------------

 FATAL CALLED FROM FILE:  <stdin>  LINE:    5779

 dz above fixed eta levels is too large

 -------------------------------------------

[0] MPI Abort by user Aborting program !

[0] Aborting program!


As 18 is the number of HadGEM-2 levels, I've testing different e_vert
values in the namelist.input file (ex: 19, 20,....22) but the error still
persisted. I've get attached the namelist.input file for some check.

So, after some frustrating tests with e_vert I've decided to chance ptop
values, but the error message persist. The only case I successfully run
real.exe was after have set ptop=50000 (500 hPa) which does not fit my
needs.

I didn't test with max_dz as I had not find where it is to be modified.

So, I really appreciate if someone could help me on this issue.


José Augusto P. Veiga,

======================================
Coordenador do curso de Meteorologia da UEA
Universidade do Estado do Amazonas
Departamento de Meteorologia
Escola Superior de Tecnologia (EST)
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Av. Darcy Vargas, 1200, Manaus-AM Brasil
Work phone:    (92) 3878 4333, Ramal 4333
Cell   phone :    (92) 8196 7122
Skype: veiga_j.a.p.
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CV: http://lattes.cnpq.br/4027612512091565
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