problem with opening multiple NetCDF files
Pavel Kishcha
pavel at CYCLONE.TAU.AC.IL
Mon Jun 9 12:27:47 EDT 2008
Thank you. I have corrected the descriptor file accordingly but it does not
help as GRADS still shows the same message:
ga-> xdfopen data.ctl
Scanning Descriptor File: data.ctl
XDFopen Error: Missing or invalid dimension size.
--> The invalid description file record is:
--> xdef 360 linear -179.500000 1.00000
The data file was not opened.
ga-> open data.ctl
Scanning description file: data.ctl
Open Error: Invalid variable record
--> The invalid description file record is:
--> aot 1 t,y,x
The data file was not opened.
The corrected descriptor file data.ctl is as follows:
dset ^%y4-%m2.nc
options template
XDEF 360 linear -179.500000 1.00000
YDEF 181 linear -89.5000000 1.000000
ZDEF 1 levels 0
TDEF 12 linear 01apr2000 1mo
vars 8
aot 1 t,y,x
aot_land 1 t,y,x
aot_water 1 t,y,x
aot_dust 1 t,y,x
angst 1 t,y,x
small 1 t,y,x
medium 1 t,y,x
large 1 t,y,x
endvars
On Mon, Jun 9, 2008 at 6:47 PM, M.Mahakur <mmahakur at tropmet.res.in> wrote:
> what happens if you change "dset" to %m2 instead of %2m in your data.ctl??
>
> --
> Open WebMail Project (http://openwebmail.org)
>
>
> ---------- Original Message -----------
> From: Pavel Kishcha <pavel at CYCLONE.TAU.AC.IL>
> To: GRADSUSR at LIST.CINECA.IT
> Sent: Mon, 9 Jun 2008 17:27:56 +0200
> Subject: problem with opening multiple NetCDF files
>
> > Dear All,
> >
> > The problem comes about when I am trying to open multiple NetCDF files in
> > GRADS.
> > Here is my descriptor file (data.ctl):
> >
> > dset ^%y4-%2m.nc
> > options template
> > XDEF 360 linear -179.500000 1.00000
> > YDEF 181 linear -89.5000000 1.000000
> > ZDEF 1 levels 1000
> > TDEF 24 linear 01apr2000 1mo
> > vars 8
> > aot 1 t,y,x
> > aot_land 1 t,y,x
> > aot_water 1 t,y,x
> > aot_dust 1 t,y,x
> > angst 1 t,y,x
> > small 1 t,y,x
> > medium 1 t,y,x
> > large 1 t,y,x
> > endvars
> >
> > ***When I run it in GrADS Version 1.9b4 by using the command xdfopen I
> see
> > the message:
> >
> > ga-> xdfopen data.ctl
> > Scanning Descriptor File: data.ctl
> > XDFopen Error: Missing or invalid dimension size.
> > --> The invalid description file record is:
> > --> xdef 360 linear -179.500000 1.00000
> > The data file was not opened.
> >
> > ***When I run it by using the command open I see the message:
> >
> > ga-> open data.ctl
> > Scanning description file: MISR_L3.ctl
> > Open Error: Invalid variable record
> > --> The invalid description file record is:
> > --> aot 1 t,y,x
> >
> > What am I doing wrong?
> > Thank you for all of your help.
> >
> > Cheers,
> > Pavel
> >
> > P.S. Here are my files:
> >
> > 2000-04.nc
> > 2000-05.nc
> > 2000-06.nc
> > …
> > 2002-03.nc
> >
> > ***Here is the output from "ncdump -h" of 2000-04.nc
> >
> > [pavel at wind ~]$ /usr/local/bin/ncdump -h 2000-04.nc
> > netcdf 2000-04 {
> > dimensions:
> > longitude = 360 ;
> > latitude = 181 ;
> > ftime = 1 ;
> > variables:
> > double longitude(longitude) ;
> > longitude:units = "degree_east" ;
> > longitude:standard_name = "longitude" ;
> > double latitude(latitude) ;
> > latitude:units = "degree_north" ;
> > latitude:standard_name = "latitude" ;
> > double ftime(ftime) ;
> > ftime:units = "seconds since ??" ;
> > ftime:standard_name = "ftime" ;
> > double aot(ftime, latitude, longitude) ;
> > aot:units = "kg m-2" ;
> > aot:standard_name = "total_aerosol_optical_thickness" ;
> > aot:coordinates = "ftime latitude longitude" ;
> > double aot_land(ftime, latitude, longitude) ;
> > aot_land:units = "kg m-2" ;
> > aot_land:standard_name
> > = "total_aerosol_optical_thickness" ;
> > aot_land:coordinates = "ftime latitude longitude" ;
> > double aot_water(ftime, latitude, longitude) ;
> > aot_water:units = "kg m-2" ;
> > aot_water:standard_name
> > = "total_aerosol_optical_thickness" ;
> > aot_water:coordinates = "ftime latitude longitude" ;
> > double aot_dust(ftime, latitude, longitude) ;
> > aot_dust:units = "kg m-2" ;
> > aot_dust:standard_name
> > = "atmosphere_content_of_dust_aerosol" ;
> > aot_dust:coordinates = "ftime latitude longitude" ;
> > double angst(ftime, latitude, longitude) ;
> > angst:units = "None" ;
> > angst:standard_name = "angstrom_exponent" ;
> > angst:coordinates = "ftime latitude longitude" ;
> > double small(ftime, latitude, longitude) ;
> > small:units = "kg m-2" ;
> > small:standard_name
> > = "aerosol_optical_thickness_due_to_small_particles" ;
> > small:coordinates = "ftime latitude longitude" ;
> > double medium(ftime, latitude, longitude) ;
> > medium:units = "kg m-2" ;
> > medium:standard_name
> > = "aerosol_optical_thickness_due_to_medium_particles" ;
> > medium:coordinates = "ftime latitude longitude" ;
> > double large(ftime, latitude, longitude) ;
> > large:units = "kg m-2" ;
> > large:standard_name
> > = "aerosol_optical_thickness_due_to_large_particles" ;
> > large:coordinates = "ftime latitude longitude" ;
> >
> > // global attributes:
> > :Conventions = "CF-1.0" ;
> > :history = "Created Mon May 5 15:55:49 2008 by mikeb" ;
> > :comment = "??" ;
> > :source = "IMPACT model v??" ;
> > :references = "??" ;
> > :institution = "Los Alamos" ;
> > :title = "AOT global grid for total, dust, angst, small,
> > medium, large" ;
> > }
> ------- End of Original Message -------
>
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