[MITgcm-devel] atmospheric PCO2 in elf

Matthew Mazloff mmazloff at ucsd.edu
Thu Oct 13 20:40:39 EDT 2016


Hello

I’m having a hard time figuring out what to do regarding ADJ dumping. My taf common blocks for apco2 contain other fields that are bling specific:

      common /carbon_needs_ad/ ph_ad, pco2_ad, fluxco2_ad, wind_ad,
     $fice_ad

So for now I have disabled ADJapco2 writing. 

Obviously not pressing, but advice appreciated.  Though I suspect the answer is to make a subroutine bling_ad_dump.F and to remove code from exf_ad_dump. I’ll put that on my TO DO list :o)

Thanks!
-Matt




> On Oct 13, 2016, at 2:29 PM, Matthew Mazloff <mmazloff at ucsd.EDU> wrote:
> 
> Hello
> 
> Yes, every change is within a #ifdef ... #endif
> 
> This is useful for both pkg/dic and pkg/bling
> but currently the code is only there to use this for pkg/bling.
> 
> It would be straightforward to implement this into DIC package. All one would do is in dic_surfforcing.F
> have the lines:
> 
> #ifdef USE_EXFCO2
>             AtmospCO2(i,j,bi,bj) = apco2(i,j,bi,bj);
> #endif
> And since apco2 is in EXF_FIELDS.h that header file would need to be included
> 
> I think this would be a nice improvement to DIC package
> 
> Let me know how you want to proceed with this
> 
> Thanks JMC!!!!
> 
> Matt
> 
> 
> 
> 
> 
> 
> 
>> On Oct 13, 2016, at 2:17 PM, Jean-Michel Campin <jmc at mit.edu> wrote:
>> 
>> Hi Matt,
>> 
>> I expect that the changes you made are all within #ifdef ... #endif
>> so there is no rush to remove them. 
>> But if we can find a better solution soon it would not hurt.
>> 
>> I am going to check with Oliver regarding where it could be moved, but
>> just to clarify (and since I did not look at your changes), do you need this
>> for pkg/bling or for pkg/dic ?
>> 
>> Cheers,
>> Jean-Michel
>> 
>> On Thu, Oct 13, 2016 at 01:51:56PM -0700, Matthew Mazloff wrote:
>>> Hi Jean-Michel
>>> 
>>> Sorry I checked that in so fast. 
>>> 
>>> I am not very familiar with the darwin code, but it seems it would be redundant to have apCO2 loaded from darwin, dic, and bling. So maybe gchem is the apropriate package. 
>>> 
>>> Should I go ahead and put this in gchem?
>>> 
>>> And what is the easiest way to revert all the changes I just checked in ??? do you have a trick?
>>> 
>>> Thanks!
>>> Matt
>>> 
>>> 
>>> 
>>> 
>>>> On Oct 13, 2016, at 1:40 PM, Jean-Michel Campin <jmc at mit.edu> wrote:
>>>> 
>>>> Hi Matt,
>>>> 
>>>> I had few comments regarding where it should go:
>>>> 1) it might be more clear to add the field & the related parameters
>>>> and S/R call within the package that use apCO2.
>>>> This way we don't extend the namelist in data.exf and exf_readparms.F
>>>> (which are already quite long).
>>>> In this direction, I started (recently) to move out of pkg/exf some of the icefront 
>>>> parameters: 
>>>>> o pkg/icefront & pkg/exf:
>>>>> - move setting of icefront Sub-Glacial RunOff forcing (currently unused)
>>>>>  from pkg/exf (read from data.exf) to pkg/icefront (read from data.icefront)
>>>> 
>>>> 2) So the main question would be: for which pacakage do you need this apCO2 ? 
>>>> bling ? dic ? Note that Oliver already has some EXF ways to load some fields
>>>> needed for new darwin pkgs.
>>>> 
>>>> 3) I don't know if this would make sense to have this apCO2 loaded from pkg/gchem,
>>>> but this would need to be checked.
>>>> 
>>>> Cheers,
>>>> Jean-Michel
>>>> 
>>>> On Thu, Oct 13, 2016 at 01:14:28PM -0700, Matthew Mazloff wrote:
>>>>> Great ??? I???ll check it in!
>>>>> 
>>>>> Thanks
>>>>> 
>>>>> -Matt
>>>>> 
>>>>> 
>>>>> 
>>>>>> On Oct 13, 2016, at 11:31 AM, Dimitris Menemenlis <dmenemenlis at gmail.com> wrote:
>>>>>> 
>>>>>> Cool!  Not only no objections on my end, but on the contrary this would be super-useful capability!
>>>>>> 
>>>>>> Cheers, 
>>>>>> 
>>>>>> Dimitris Menemenlis
>>>>>> 
>>>>>>> On Oct 12, 2016, at 4:01 PM, Matthew Mazloff <mmazloff at ucsd.edu> wrote:
>>>>>>> 
>>>>>>> Hello
>>>>>>> 
>>>>>>> Are there any objections to me adding apco2 to the exf package?
>>>>>>> 
>>>>>>> The modifications would be to
>>>>>>> exf_diagnostics_fill.F  
>>>>>>> exf_init.F      
>>>>>>> exf_summary.F
>>>>>>> exf_ad_dump.F               
>>>>>>> exf_diagnostics_init.F  
>>>>>>> exf_monitor.F
>>>>>>> exf_readparms.F
>>>>>>> 
>>>>>>> exf_ad_check_lev1_dir.h  
>>>>>>> exf_ad_check_lev2_dir.h  
>>>>>>> exf_ad_check_lev3_dir.h         
>>>>>>> exf_ad_check_lev4_dir.h    
>>>>>>> 
>>>>>>> EXF_FIELDS.h   
>>>>>>> EXF_PARAM.h
>>>>>>> 
>>>>>>> All changes would be within CPP flag:
>>>>>>> USE_EXFCO2
>>>>>>> 
>>>>>>> I would add default #undef USE_EXFCO2
>>>>>>> in
>>>>>>> EXF_OPTIONS.h 
>>>>>>> 
>>>>>>> Thanks!
>>>>>>> Matt
>>>>>>> 
>>>>>>> 
>>>>>>> 
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>>>>>> 
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