Re: leap year and mc files

[Ansley Manke <ansley@xxxxxxxxxxxxx>]

Hi Brent,
Do upgrade to version 5.4.   Ferret v5.22 doesn't recognize the "noleap"
attribute.   I think that the using a descriptor file will work fine if you
specify the calendar attribute in the annual files and use the actual start
and end dates in the .des file.   Let us know how that goes.

Ansley Manke

Brent A McDaniel wrote:

> Hi Ferret Users,
>
> I have begun analysis on data produced by the NASCAR model which defines
> every year as 365 days (so no leap years on 1980 etc).  I converted the
> grads data to netcdf via grads2nc and opened it with ferret.  No suprise,
> it assumed that 1980 was supposed to have leap years so the dates were off
> by one.  I remade the netcdf file using the
> time:calendar_type = "noleap" ; in the header and opened the file via
> ferret and still it assumed that 1980 was a leap year (putting the data
> that should have been mar1 at mar0 and skewing all later data by 1 day).
> Is there a good way to get ferret to recognize the data as being of the
> type noleapyear?
>
> I'm still using v5.22 but if I upgraded, I could define a new noleap axis
> and regrid the data to it but this seems clunky and is less than
> desireable.  Any suggestions?
>
> Second question:  Once I figure out question 1, I want to open 17
> annual data files as 1 via the mc descriptor files.  I have .des files
> that I use for standard calenders, but I'm confused as to what to put in
> the s_start and s_end because of the lack of leap years.  Is there a flag
> I can somehow use to tell ferret that I want to use noleap year calenders?
> If someone has an example of a noleap year .des file that would be great
> as well.
>
> Hopefully I've explained myself well enough to make my troubles clear.
>
> Thanks as always for the help.
>
> --Brent
>
> --
> Brent A. McDaniel
>
> Dept of Earth and Atmospheric Sciences
> Georgia Institute of Technology
> Atlanta, Ga.  USA

--
Ansley Manke  Pacific Marine Environmental Laboratory  Seattle WA  (206)526-6246