[MITgcm-support] Trying to relax ptracer using RBCS

[Martin Losch]

It looks like, it doesn’t have anything to do with pkg/rbcs, as ‘nitrate_surf_J2D.bin’ does not appear in your data.rbcs.

It’s a different file in a different package (pkg/bling?)

M.

> On 18. Dec 2023, at 15:27, kunal madkaiker <kunal.madkaiker02 at gmail.com> wrote:
> 
> Dear All,
> 
> Just to add more information to my previous query, both the relaxMaskFile and relaxPtracerFile have dimensions X*Y*73 i.e., 73 timesteps as both are being repeated every fifth day.
> I also tried changing it to daily (X*Y*365) but still get the same error:  At line 2203 of file mdsio_read_field.f (unit = 9, file = 'nitrate_surf_J2D.bin')
> Fortran runtime error: Non-existing record number
> 
> Do I need to add an extra timestep (73+1)? Can anyone help me find the actual dimensions required for 'relaxMaskFile' and 'relaxPtracerFile'.
> 
> Thanks,
> Kunal
> 
> On Fri, Dec 15, 2023 at 3:11 PM kunal madkaiker <kunal.madkaiker02 at gmail.com <mailto:kunal.madkaiker02 at gmail.com>> wrote:
>> Dear All,
>> 
>> I need some help with the RBCS package. I am trying to restore the 'nitrate' ptracer at the surface (I am using BLING). Since its just one mask to be read, I have set maskLEN=1 in RBCS_SIZE.h. So, my iTr=4 and irbc should be 6 (2+iTr) if I am not mistaken.
>> 
>> However, when I run the setup, I get an error: Fortran runtime error: Non-existing record number.
>> After keeping maskLEN> irbc, I still get the same error for 'coastal_mask.bin' file.
>> 
>> My data.rbcs looks like this,
>> # RBCS package parameters:
>>  &RBCS_PARM01
>>    relaxMaskFile(6)='coastal_mask.bin',
>>    rbcsForcingPeriod=432000.,
>>    rbcsForcingCycle=31536000.,
>>  &
>> 
>> # RBCS for pTracers (read this namelist only when ptracers pkg is compiled)
>>  &RBCS_PARM02
>>   useRBCptrnum(4)    = .TRUE.,
>>   tauRelaxPTR(4)     = 432000.,
>>   relaxPtracerFile(4)='nitrate_surf_pentadclim.bin',
>>  &
>> 
>> Kindly let me know your thoughts and any modifications that I need to make.
>> 
>> Thanks,
>> Kunal
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