[gradsusr] opening CAM netcdf files with grads

[Sagar Parajuli]

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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