[MITgcm-support] output of regional statistics

[Brian Rose]

David et al,

Just to follow up on this...  you are right.
The output seems to make sense in the case where I request the global mean.

To be specific, I define 6 regions, and then include the following in data.diagnostics:

  stat_fname(2) = 'OcnStDiag',
  stat_freq(2) = 31104000.,
  stat_phase(2) = 0.,
  stat_fields(1,2) = 'THETA   ','SALT   ',
  stat_region(1,2) = 0,1,2,3,4,5,6,

And I get 7 output fields for each statistic, which seem to be global mean followed by the 6 regions.

On the other hand, if I change stat_region to the following:
stat_region(1,2) = 1,2,3,4,5,6,
(i.e. don't request global mean)
then I still get 7 output fields, and the first one appears to be crap.

So there's no problem now that I know this, but for posterity, this feature seems to work better if you explicitly request the global mean.

Brian

On Oct 1, 2010, at 11:41 AM, David Ferreira wrote:

> Brian,
> The first field could be the global field. Although if you haven't asked for it, it could just be crap (and this could be a problem specific to mnc).
> If this is the case, ask for the global value ("0") and those fields should fill up with sensible values.
> david
> 
> 
> 
> On 10/1/10 11:25 AM, Brian Rose wrote:
>> 
>> Hi again,
>> 
>> I now have the regional statistics up and running, but I'm confused about the output it generates.
>> 
>> I have set up 6 regions, non-overlapping, and I'm monitoring THETA and SALT in a file OcnStDiag.nc
>> When I read these into matlab using
>> 
>> OcnStDiag = rdmnc('MON/OcnStDiag.*')
>> 
>> I get fields with 7 elements rather than 6.  Elements 2 through 7 of each field appear to be the statistics from the regions I defined.  I'm trying to understand what the first element is, and haven't found any documentation about it.
>> 
>> For example:
>> 
>> >> OcnStDiag.THETA_ave
>> 
>> ans =
>> 
>>     0.1482    6.2174    8.1073    9.7795    9.7660    8.1065    6.2333
>> 
>> >> OcnStDiag.SALT_ave
>> 
>> ans =
>> 
>>     0.1482   34.3880   34.6294   34.7944   34.7877   34.6184   34.3785
>> 
>> The first element is the same number in both the SALT and THETA fields, so I'm not even sure what dimensions this number is supposed to have.
>> 
>> Help?
>> 
>> Thanks!
>> 
>> Brian
>> 
>> ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~
>> Brian E.J. Rose, PhD
>> Postdoctoral Associate, Climate Dynamics
>> Department of Earth, Atmospheric and Planetary Sciences
>> Massachusetts Institute of Technology
>> office: 54-1721          phone: 617-253-5935
>> email:  brose at mit.edu
>> ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~
>> 
>> 
>> 
>> 
>> 
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~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~
Brian E.J. Rose, PhD
Postdoctoral Associate, Climate Dynamics
Department of Earth, Atmospheric and Planetary Sciences
Massachusetts Institute of Technology
office: 54-1721          phone: 617-253-5935
email:  brose at mit.edu
~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~




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