[gradsusr] opening CAM netcdf files with grads

[Cara-Lyn Lappen]

Removing lon and lat did not work

I get the same error message.

The other suggestion to add the line : "options template 365_day_calendar" also did not work.

any other ideas? Im open…

Cara-Lyn



On Nov 1, 2012, at 7:25 PM, Rupak Rajbhandari <rupak.rajbhandari at gmail.com> wrote:

> remove 'lon' & 'lat' from xdef and ydef line in a descriptor file.
> 
> -rupak
> 
> 
> On Fri, Nov 2, 2012 at 2:24 AM, Sagar Parajuli <psagar at utexas.edu> wrote:
> Hi Cara-lyn
> In your script please include the following and use xdfopen to open the
> file, it should work:
> options template 365_day_calendar
> 
> 
> 
> ,
> 
> Sagar Prasad Parajuli
> Graduate Student/Research Assistant
> University of Texas at Austin
> Jackson School of Geosciences
> 1 University Station C1100, JGB 5.322
> Austin, TX 78712
> Contact: psagar at utexas.edu
> Cell: 512 965 4093
> 
> 
> 
> -----Original Message-----
> From: gradsusr-bounces at gradsusr.org [mailto:gradsusr-bounces at gradsusr.org]
> On Behalf Of Cara-Lyn Lappen
> Sent: Thursday, November 01, 2012 3:10 PM
> To: gradsusr at gradsusr.org
> Subject: [gradsusr] opening CAM netcdf files with grads
> 
> hi all,
> 
> I am fairly new to GraDs. I am trying to use GraDs to open a netcdf file
> created by the NCAR CAM model. I have tried everything and I can't get it to
> work.
> sdfopen doesn't work because it has a 365 day calendar. So, I tried xdfopen
> with a model descriptor file that looks like this (test.ctl)
> 
> DSET ^tiltedheat_daily_1980_1997_FLNT_anom.nc
> TITLE This is only a test
> UNDEF -999
> XDEF lon 144    LINEAR 0.0 2.5
> YDEF lat 96 LINEAR -90. 1.9
> TDEF 6206 LINEAR 00Z1jan1980 1dy
> VARS 1
> OLR=>FLNT_anom 0 x,y OLR
> ENDVARS
> 
> -----------------------------------------------------------
> 
> The ncdump -h output for this file looks like this:
> 
> netcdf tiltedheat_daily_1980_1997_FLNT_anom {
> dimensions:
>         time = UNLIMITED ; // (6206 currently)
>         lat = 38 ;
>         lon = 144 ;
> variables:
>         double time(time) ;
>                 time:long_name = "time" ;
>                 time:units = "days since 1980-01-01 00:00:00" ;
>                 time:calendar = "noleap" ;
>                 time:bounds = "time_bnds" ;
>         double lat(lat) ;
>                 lat:long_name = "latitude" ;
>                 lat:units = "degrees_north" ;
>         double lon(lon) ;
>                 lon:long_name = "longitude" ;
>                 lon:units = "degrees_east" ;
>         float FLNT_anom(time, lat, lon) ;
>                 FLNT_anom:_FillValue = -999.f ;
>                 FLNT_anom:long_name = "OLR Anomalies from Raw Daily
> Climatology" ;
>                 FLNT_anom:units = "W/m2" ;
>         float FLNT_anom_sm(time, lat, lon) ;
>                 FLNT_anom_sm:_FillValue = -999.f ;
>                 FLNT_anom_sm:long_name = "FLNT Anomalies from Smooth Daily
> Climatology" ;
>                 FLNT_anom_sm:units = "W/m2" ;
> 
> // global attributes:
>                 :creation_date = "Wed Sep  5 13:44:55 CDT 2012" ;
>                 :title = "FLNT: Daily Anomalies: 1980-1997" ; }
> 
> ----------------------------------------------------
> 
> The error I keep getting when I type "open test.ctl" is:
> 
> Scanning description file:  test.ctl
> Open Error:  Missing or invalid dimension size.
>   --> The invalid description file record is:
>   --> XDEF lon 144      LINEAR 0.0 2.5
>   The data file was not opened.
> 
> 
> What is wrong with the xdef line? it seems so basic to implement, but it
> won't work.
> 
> any help that anyone has would be much appreciated,
> 
> thanks,
> 
> Cara-Lyn
> 
> 
> 
> 
> 
> 
> 
> 
> 
> 
> Cara-Lyn
> 
> 
> ***************************************************
> Dr. Cara-Lyn Lappen
> Dept. of Atmos. Sciences              ,__o
> Texas A&M University                 _ -\ _<;
> Phone: (970) 382-2290              (*) /' (*)
> Cell Phone: (970) 946-6134
> Email: lappen7 at gmail.com
> ***************************************************
> 
> 
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