[gradsusr] Trying to open CCSM4 Historical run .nc file

[Jennifer Adams]

Try changing your TDEF entry to “TDEF time 600 linear 01jan1850 1mo”.  
—Jennifer


On Nov 1, 2014, at 3:09 PM, aftab jajja <aftabjajja at yahoo.com> wrote:

>   hi
> I am trying to open CCSM4 historical run .nc file  with following information.
> 
> > cdo sinfo va_Amon_CCSM4_historical_r1i1p1_185001-189912.nc 
>    File format: netCDF
>     -1 : Institut Source   Ttype    Levels Num  Gridsize Num Dtype : Parameter ID
>      1 : unknown  CCSM4    instant      17   1     55296   1  F32  : -1            
>    Grid coordinates :
>      1 : lonlat       > size      : dim = 55296  nx = 288  ny = 192
>                         lon       : first = 0  last = 358.75  inc = 1.25  degrees_east  circular
>                         lat       : first = -90  last = 90  inc = 0.942408377  degrees_north
>                         available : xbounds ybounds
>    Vertical coordinates :
>      1 : pressure              Pa : 100000 92500 85000 70000 60000 50000 40000 30000 
>                                     25000 20000 15000 10000 7000 5000 3000 2000 1000 
>    Time coordinate :  600 steps
>      RefTime =  1850-01-01 00:00:00  Units = days  Calendar = 365_day  Bounds = true
>   YYYY-MM-DD hh:mm:ss  YYYY-MM-DD hh:mm:ss  YYYY-MM-DD hh:mm:ss  YYYY-MM-DD hh:mm:ss
>   1850-01-16 12:00:00  1850-02-15 00:00:00  1850-03-16 12:00:00  1850-04-16 00:00:00
>   1850-05-16 12:00:00  1850-06-16 00:00:00  1850-07-16 12:00:00  1850-08-16 12:00:00 .....................................................................
> 
> when i used Grads sdfopen command followind was the error message
> 
> ga-> sdfopen va_Amon_CCSM4_historical_r1i1p1_185001-189912.nc 
> Scanning self-describing file:  va_Amon_CCSM4_historical_r1i1p1_185001-189912.nc
> SDF Error: 365 day calendars are no longer supported by sdfopen.
>   To open this file with GrADS, use a descriptor file with 
>   a complete TDEF entry and OPTIONS 365_day_calendar. 
> 
> i tried  the following script but the problem is not solved.
> 
> DSET sdfopen ^va_Amon_CCSM4_historical_r1i1p1_185001-189912.nc 
> 
> OPTIONS 365_day_calendar
> TDEF 600 12 12Z16jan1850 1mo
> 
> the error message is
> 
> ga-> xdfopen year_365.ctl
> Scanning Descriptor File:  not_leap_year.ctl
> gadxdf error: Missing or invalid dimension scaling type
>   --> The invalid description file record is: 
>   --> tdef 600 12 12z016jan1850 1mo
>   The data file was not opened. 
> 
> any clue to this problem
> 
> regards 
> 
> Aftab ahmad
> Jajja Jatt
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> gradsusr at gradsusr.org
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--
Jennifer M. Adams
Center for Ocean-Land-Atmosphere Studies (COLA)
111 Research Hall, Mail Stop 2B3
George Mason University
4400 University Drive
Fairfax, VA 22030 





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