Re: Problem with add_offset and scale_factor

• To: Laurent DUBUS <laurent.dubus@xxxxxx>
• Subject: Re: Problem with add_offset and scale_factor
• From: pjr@xxxxxxxxxxxxxxxxxxxxx (Phil Rasch)
• Date: Tue, 10 Feb 2004 11:39:25 -0700

I know that this was a problem with older versions of the NCO suite of
tools, and that modern versions are supposed to have fixed this.

Please check your version number. If you are using anything older than
the last 6 months or so I would update.

Phil



On Tue, Feb 10, 2004 at 04:33:23PM +0100, Laurent DUBUS wrote:
> 
> Hi all,
> 
> I'm a beginner with NetCDF and NCO.
> I have several files 1990.nc, 1991.nc ..., each of them containing annual data
> jan, feb, ..., dec.  I want to calculate the climatology, but using ncea gives
> me a file with something that is not the arithmetic mean of the individual
> files.
> After some inquiries, I think this is due to the fact that each input file
> (variable type is short) as a different add_offset and scale_factor.
> Using ncea seems to attribute to the ouput file the add_offset and 
> scale_factor
> of the first input file.
> 
> Does anybody know how I can proceed to get the correct climatology ? Is it
> possible with ncap ? How should I use it ?
> 
> Thank you very much for any help !
> All the best
> Laurent

-- 
Phil Rasch, Climate Modeling Section, National Center for Atmospheric Research
Mail     --> P.O. Box 3000, Boulder CO 80307  
Shipping --> 1850 Table Mesa Dr, Boulder, CO 80305
email: pjr@xxxxxxxx, Web: http://www.cgd.ucar.edu/cms/pjr Phone: 303-497-1368, 
FAX: 303-497-1324 

• References:
  • Problem with add_offset and scale_factor
    • From: Laurent DUBUS