problem with opening multiple NetCDF files

Pavel Kishcha pavel at CYCLONE.TAU.AC.IL
Mon Jun 9 11:27:56 EDT 2008


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" ;
}



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