[MITgcm-support] exf pkg

[Patrick Heimbach]

Eli,

On Apr 20, 2007, at 11:52 AM, Eli Biton wrote:

> Hi all
> Is there any way to set different "repeatPeriod"  when using  
> recycling forcing field via the exf pkg?
> For example setting climatological values for sfluxFile (and then  
> repeatPeriod=1year and sfluxPeriod=1month) and hourly values for  
> heat fluxes repeated every day (and then repeatPeriod=1day and  
> sfluxPeriod=1hour).
>
not possible to set indivudual repeatPeriod's currently,
I'm afraid.

But should still be possible to do what you want to do.
Set:
repeatPeriod = (1year in seconds)
sFluxPeriod = -12,    (this is recognized as monthly climatological  
forcing)
hFluxPeriod = 3600.,

and then (I'm afraid) duplicate 360 (or 365, depending on whether
you are using usingModelCalendar or usingGregorianCalendar)
records in your hFluxFile.
A bit of a pain, but it works.

> Another question is: when recycling is omitted (i.e. repeatPeriod  
> =0), it is mining that the forcing file will be activated once for  
> a period of the "FilePeriod" value, starting from FileStartDate  
> (i.e.  FileStartDate1+FileStartDate2 specified in data.exf)?

Yes, first record is at YYMMDD= FileStartDate1, HHMMSS= FileStartDate2
next record is "FilePeriod" seconds later.
That allows real-world forcing (including leap years) over many years.
See online doc for more.

-p.

> many thanks, Eli
>
>
>
>
> ************************************************
> Eliyahu Biton
> Deptartment of Environmental Sciences,
> Weizmann Institute of Science,
> Rehovot,76100
> Israel
> Tel:+972-8-9344924
> Fax:+972-8-9344124
> ************************************************
>
>
>
> _______________________________________________
> MITgcm-support mailing list
> MITgcm-support at mitgcm.org
> http://mitgcm.org/mailman/listinfo/mitgcm-support

---
Dr Patrick Heimbach | heimbach at mit.edu | http://www.mit.edu/~heimbach
MIT | EAPS, 54-1518 | 77 Massachusetts Ave | Cambridge, MA 02139, USA
FON: +1-617-253-5259 | FAX: +1-617-253-4464 | SKYPE: patrick.heimbach