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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