problem with 365_day calender under grads v2.0.a4.oga.1

[Jennifer Adams]

The reason why you can't use sdfopen to open 365_day_calendar files is
because the udunits library (used by the sdfopen code) does not
support 365_day_calendars and so the initial time of your file may be
interpreted incorrectly. This error comes up often when using nc files
from the IPCC -- you must provide all the time axis information to
GrADS to make sure it is correct.
Jennifer


On Jan 26, 2009, at 12:45 PM, Henrique Barbosa wrote:

> Dear All,
>
> I have  a few netCDF files which use a 365day calendar. I used to
> open these
> files using 'sdfopen' directly without any problem. Yesterday I
> installed Grads2.0a4
> (actually the open grads version) and now it complains about the
> calendar!
>
> I wonder why does the new version reject the 365day calendar netCDF
> files,
> while the previous versions accepted.... Is this a bug in the new
> grads or this
> change was meant to be?
>
> Of course I could write a ctl... but its so much easier to use the
> self
> contained netCDF that I would rather go back to 1.9b4....
>
> []'s
> Henrique
>
> Scanning self-describing file:
> original/cccma/
> pcmdi
> .ipcc4
> .cccma_cgcm3_1_t63.20c3m
> .run1.monthly.tos_o1_20c3m_1_cgcm3.1_t63_1850_2000.nc
> SDF Error: 365 day calendars are not COARDS compliant.
>  You can still open this file with GrADS if you write a descriptor
> file that
>  contains a complete TDEF entry and OPTIONS 365_day_calendar. Please
> read the
>  documentation at http://grads.iges.org/grads/gadoc/SDFdescriptorfile.html
> ga->

--
Jennifer M. Adams
IGES/COLA
4041 Powder Mill Road, Suite 302
Calverton, MD 20705
jma at cola.iges.org



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