[RegCNET] run chemistry in RegCM-4.3-rc12

[Solmon Fabien]

Dear Zeinab and all

Yes there was a failure in a netcdf function used to determine the
had-hoc date in the emission file. This bug is fixed now and the new
version will be released soon (10-15 days). For the chemistry/aerosol
optionm a couple of other issues are being fixed : dust emission are now
performing  as version regcm4-1, there is even an option to use an
alternative dust emission size distribution (cf Nabat et al, ACPD),  and
some additional diagnostics have been added to the output. The sulfate
aerosol showed also some problem this is being fixed to perform as
previous version.

For those who are wondering , those new bugs appearing in some in the
standard ( compared to standard 4.1 and 4.1-chem ) are coming mainly
from restructuring the code, externalizing the chemistry module and work
on the input outputs:  they are not due to modification of the
parameterization themselves.

Note also that , for the gas-phase chemistry, we use now RCP emission
scenario which are different from the emission considered in the
reference papaer of Schallaby et al, GMD. Especially since the emission 
Nox/voc ratios might be different, this can lead to difference in ozone
production ( which does not mean there is a bug in the chemistry scheme) .

Ideally I would like to produce benchmark runs for every option of the
chemistry , with the associated namelist and put that on a web page.
Like this every user will be able to check that his version is consistent.

All the best

Fabien
On 05/31/2012 05:05 PM, Zeinab Salah wrote:
> Dear all
>
> I try to run the new version of regcm (  RegCM-4.3-rc12) with
> chemistry, using chemsimtype = 'CBMZ'.
> The namelist is attached
>
> After attempts,  the interpolation of the emissions occured  and the
> file of "  test_001_CHEMISS.nc  " is created  , but the run stops in
> the beginning, and the error is :
>
>  READY ICCH  DATA for 2001-08-01 00:00:00 UTC
>  SEARCH CHBC data for    2001080106
>  READY  CHBC from        2001080100  to    2001080106
>  READ CHEM EMISSION for    2001080100
>  Opening ch. emission file input/test_001_CHEMISS.nc
>  Variable CO_flux read err
>  NetCDF: Index exceeds dimension bound
>   -------------- FATAL CALLED ---------------
>   Fatal in file: mod_che_ncio.F90 at line:      367
>   CHEM_EMISS FILE
>   -------------------------------------------
>  mod_che_ncio.F90 :      367:             1
> application called MPI_Abort(MPI_COMM_WORLD, 1) - process 0
> rank 0 in job 4  localhost.localdomain_59170   caused collective abort
> of all ranks
>   exit status of rank 0: return code 1
>
> So, please can anyone help me to run the chemistry in RegCM-4.3-rc12
>
> Thanks in advance
>
> Best regards
>
> Zeinab Salah
>
>
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