Re: tickmark labels for month

From: Dennis Shea <shea_at_nyahnyahspammersnyahnyah>
Date: Fri, 13 Oct 2006 08:09:14 -0600 (MDT)

> Practical limitations may come from the variety of time axis definitions
> (usage of different calendars etc). Right now I believe, udunits
> supports only one kind of calendar. Applications such as GrADS assume
> that the time information is always written using a standard calendar.
> This could give rise to problems when for example using a NetCDF file
> that writes time in terms of a 360 day calendar for example.

If anyone is aware of robust, portable calendar software
[C/Fortran/.../NCL] that supports any or all CF netCDF calendars:
gregorian, standard, proleptic_gregorian, noleap, 365_day,
all_leap, 366_day, 360_day, julian calendars, we would like
to look at it. :-)

Incidently, when creating time with units "hours/days since ..."
regardless of calendar, I suggest that *auxiliary time variables*
be created.

      time .... "days since ..."

auxilary time variable [like CCSM]

      date .... for whatever calendar is being used
                    eg: yyyymmdd
      datesec .... secends of the day

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Received on Fri Oct 13 2006 - 08:09:14 MDT

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