[MITgcm-support] Monthly averaged OBCS with useOBCSYearlyFields

[Christoph Voelker]

Dear Kaitlin,

I think your first method should work, BUT you need to provide also the 
monthly fields for the adjacent years, so the model has something to 
interpolate. In your case, was there a file UVEL_piControl.OBCS_N_1980 
present?

Best regards, Christoph


Am 25.10.19 um 11:37 schrieb Naughten, Kaitlin A.:
> Hi everyone,
>
> I am trying to run with monthly-averaged OBCS which change every year 
> (useOBCSYearlyFields=true) and a Gregorian calendar meaning the months 
> are different lengths. I am not sure that the code allows me to do 
> this. I have tried two different things:
>
>  1. Set obcs*period to 2592000 (30 days) and hope that the code turns
>     it into a "real" month, as it does for the diagnostics. This
>     doesn't seem to work as the model dies near the end of the first
>     year when wants a 13th record to interpolate to, and can't find it.
>  2. Set obcs*period to -12 as you do for a repeating monthly
>     climatology. Now the code dies because it's constructing a weird
>     file name which doesn't exist (seems to be
>     either UVEL_piControl.OBCS_N or UVEL_piControl.OBCS_N.001.001.data
>     when it should just be UVEL_piControl.OBCS_N_1979). Looking
>     through the code in obcs_exf_load, it seems that obcs*period=-12
>     isn't set up to work with useOBCSYearlyFields, because the
>     variables year0 and year1 are never initialised.
>
> What do you suggest I do? Is there a way to set a non-constant OBCS 
> period so the months can be different lengths? Or, an easy way to add 
> this functionality to the code?
>
> Many thanks,
> Kaitlin Naughten
>
> *Dr Kaitlin Naughten***|**Ocean-Ice Modeller | British Antarctic Survey
>
> High Cross, Madingley Road, Cambridge CB3 0ET
>
> Email:_kaight at bas.ac.uk <mailto:kaight at bas.ac.uk>_
>
>
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-- 
Christoph Voelker
Alfred Wegener Institute
Helmholtz Centre for Polar and Marine Research
Am Handelshafen 12
27570 Bremerhaven, Germany
e: Christoph.Voelker at awi.de
t: +49 471 4831 1848

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