Help on EASE-Grid Weekly Snow Cover data

[Prince Xavier]

Hello all,

Thanks Arindam. I did it in another slightly tricky way. But now there's the
problem of pre-projected data. The grid is 721 columns by 721 rows, with the
North Pole positioned at the center of the center pixel. Spatial resolution is
25 km. The CTL file I wrote looks like this.

dset ^test.grd
undef 254
pdef 721 721 nps 360 360 180.0 25
xdef 721 linear 0 0.5
ydef 721 linear 0 0.125
zdef 1 linear 1 1
tdef 1 linear 1jan1966 1dy
vars 1
sn 1 100 1 * snow
endvars

But it gives a distorted representation of the data. (Please see the
attachment.) Could anyone please help me to figure out what went wrong?

Regards
Prince



On Mon, 4 Jul 2005 11:32:02 -0400, Arindam Chakraborty wrote
> dear Prince,
>         reading the variable as integer(1) in a fortran program
> should solve your problem. However, 1-byte unsigned characters can
> be read in GrADS directly by writing -1,40,1 in the units field of
> the variable in the descriptor file.
>
> regards,
>
> arindam
> ----------------------------
>  ARINDAM CHAKRABORTY
>  Department of Meteorology
>  Florida State University
>  Tallahassee, FL-32306, USA
>  Tel: +001-850-6443524 (Off)
>       +001-850-5758550 (Res)
>  Fax: +001-850-6449642
> ____________________________
>
> On Mon, 4 Jul 2005, Prince K. Xavier wrote:
>
> > Hello,
> >
> > I have a slightly out of topic query. I am trying to convert the Northern
> > Hemisphere EASE-Grid Weekly Snow Cover and Sea Ice Extent Version 2, to
> > Grads format, which is written in Flat binary files with arrays of 721
> > columns by 721 rows of 1-byte unsigned integers.
> >
> > My query is, whether it is possible to read it as 1-byte integers in
> > fortran, than reading it as character?
> >
> > If anyone has faced this problem before, please let me know how you have
> > resolved it.
> >
> > Thanks in advance
> > Prince
> > --
> > Prince K XAVIER
> > Centre for Atmospheric and Oceanic Sciences
> > Indian Institute of Science
> > Bangalore - 560 012
> > INDIA
> > http://caos.iisc.ernet.in/hpg/students/prince.html
> > __________________________________________________
> > Phone No.
> > +91 80 2293 2505 (Extn:201)
> > +91 98808 19172  (Mobile)
> >


Prince K XAVIER
Centre for Atmospheric and Oceanic Sciences
Indian Institute of Science
Bangalore - 560 012
INDIA
http://caos.iisc.ernet.in/hpg/students/prince.html
__________________________________________________
Phone No.
+91 80 2293 2505 (Extn:201)
+91 98808 19172  (Mobile)

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