[gradsusr] SDF file error: does not have non-coordinate variables
Jennifer M Adams
jadams21 at gmu.edu
Fri Jul 1 09:42:10 EDT 2016
Hi, Gary —
Jim is right, you need a descriptor file for the “BAD” file with the extra dimensions. An example is below, but since your ncdump output didn’t show any metadata for the coordinates, I set everything to ‘abstract’ grid dimensions. You also need to alias the variables that have upper case letters and are >16 characters.
dset ^ENAAPS_2013080200_24hr.nc
dtype netcdf
undef -9.99e8
xdef 360 linear 1 1
ydef 180 linear 1 1
zdef 25 linear 1 1
tdef 2 linear 02aug2013 1dy
edef 12 names 1 2 3 4 5 6 7 8 9 10 11 12
vars 7
sigma 25 z mid-level sigma b
height 25 t,e,z,y,x elevation above surface [m]
pressure 25 t,e,z,y,x mid-level pressure [hPa]
ABF_mass_concentration=>abfmc 25 t,e,z,y,x Anthropogenic and Biogenic fine mass concentration [ug/m^3]
dust_mass_concentration=>dustmc 25 t,e,z,y,x Dust mass concentration [ug/m^3]
smoke_mass_concentration=>smokemc 25 t,e,z,y,x Smoke mass concentration [ug/m^3]
seasalt_mass_concentration=>saltmc 25 t,e,z,y,x Seasalt mass concentration [ug/m^3]
endvars
—Jennifer
On Jun 30, 2016, at 9:32 PM, James T. Potemra <jimp at hawaii.edu<mailto:jimp at hawaii.edu>> wrote:
Hi Gary,
You are likely having problems because of the extra dimensions on your variables, specifically "copy" and "vert" (the good file has var(time,lat,lon) while the bad file has var(time,copy,vert,lat,lon). You might be able to use a control file and map "vert" to ZDEF and "copy" to ensemble or something like that.
Jim
On 6/30/16 2:14 PM, Love, Mr. Gary, Contractor, Code 7542 wrote:
I have seen this problem reported earlier in the grads forum, but no clear
solution has emerged.
I'm using 2.0.2 on platform: Linux 2.6.32.59-0.7-default #1 SMP 2012-07-13
15:50:56 +0200 x86_64 x86_64 x86_64 GNU/Linux
Some .nc files do not open and give an error.
gadsdf: SDF file does not have any non-coordinate variables.
No script is being used. This occurs at the command line when attempting to
sdfopen the file.
The results from ncdump -h for the bad file and a similar good file appear
below..
The issue may be related to the "copy" variable.
Thanks for any advice, I did not write these files but have access to the
author who doesn't know what the problem is either.
Gary Love
NRL Monterey, CA
BAD FILE
_______
netcdf ENAAPS_2013080200_24hr {
dimensions:
lat = 180 ;
lon = 360 ;
vert = 25 ;
copy = 12 ;
time = 2 ;
variables:
int time(time) ;
time:units = "seconds since 2013-08-02 00:00:00" ;
time:standard_name = "time" ;
int forecast_reference_time ;
forecast_reference_time:units = "seconds since 1970-01-01
00:00:00" ;
forecast_reference_time:standard_name =
"forecast_reference_time" ;
float lat(lat) ;
lat:units = "degrees_north" ;
lat:long_name = "latitude" ;
float lon(lon) ;
lon:units = "degrees_east" ;
lon:long_name = "longitude" ;
float sigma(vert) ;
sigma:units = "sigma_level" ;
sigma:long_name = "mid-level sigma b" ;
float height(time, copy, vert, lat, lon) ;
height:units = "m" ;
height:long_name = "elevation above surface" ;
float pressure(time, copy, vert, lat, lon) ;
pressure:units = "hPa" ;
pressure:long_name = "mid-level Pressure" ;
float ABF_mass_concentration(time, copy, vert, lat, lon) ;
ABF_mass_concentration:units = "ug/m^3" ;
ABF_mass_concentration:long_name = "Anthropogenic and
Biogenic fine mass concentration" ;
float dust_mass_concentration(time, copy, vert, lat, lon) ;
dust_mass_concentration:units = "ug/m^3" ;
dust_mass_concentration:long_name = "Dust mass
concentration" ;
float smoke_mass_concentration(time, copy, vert, lat, lon) ;
smoke_mass_concentration:units = "ug/m^3" ;
smoke_mass_concentration:long_name = "Smoke mass
concentration" ;
float seasalt_mass_concentration(time, copy, vert, lat, lon) ;
seasalt_mass_concentration:units = "ug/m^3" ;
seasalt_mass_concentration:long_name = "Seasalt mass
concentration" ;
// global attributes:
:Conventions = "CF-1.0" ;
data:
time = 0, 86400 ;
}
GOOD FILE
________
netcdf ENAAPS_2013081518_24hr_e1 {
dimensions:
lat = 180 ;
lon = 360 ;
time = 5 ;
variables:
int time(time) ;
time:units = "seconds since 2013-08-15 18:00:00" ;
time:standard_name = "time" ;
int forecast_reference_time ;
forecast_reference_time:units = "seconds since 1970-01-01
00:00:00" ;
forecast_reference_time:standard_name =
"forecast_reference_time" ;
float lat(lat) ;
lat:units = "degrees_north" ;
lat:long_name = "latitude" ;
float lon(lon) ;
lon:units = "degrees_east" ;
lon:long_name = "longitude" ;
float total_aod(time, lat, lon) ;
float sulfate_aod(time, lat, lon) ;
float dust_aod(time, lat, lon) ;
float smoke_aod(time, lat, lon) ;
float seasalt_aod(time, lat, lon) ;
// global attributes:
:Conventions = "CF-1.0" ;
data:
time = 0, 21600, 43200, 64800, 86400 ;
}
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--
Jennifer Miletta Adams
Center for Ocean-Land-Atmosphere Studies (COLA)
George Mason University
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