[gradsusr] merging time steps

[Lee Byerle]

Kaikombo,

Here is a script that will merge daily averaged temperature fields for a single level, from multiple years (NCEP Reanalysis) into a single grib2 file using g2grb.gs (see web link).

Best,
Lee


'reinit'
iyear=2006
*iyear=1948

while (iyear <= 2012)
 'sdfopen  http://www.esrl.noaa.gov/psd/thredds/dodsC/Datasets/ncep.reanalysis.dailyavgs/pressure/air.'iyear'.nc'
 'q file'
 res=sublin(result,5)
 tsize=subwrd(res,12)
 say tsize
 tim = 1
 'set x 1 144'
 'set y 1 73'
while (tim <= tsize)
  'set t 'tim
  'define var=air(lev=10)'
  'g2grb var +merged_t10_daily_b20060101.e20120728.grb2 TMP:10 mb:anl:packing=j:center=7'
  tim=tim+1
endwhile
 'close 1'
 iyear=iyear+1
endwhile
'quit'


http://www.cpc.ncep.noaa.gov/products/wesley/g2grb.html 



On Mar 11, 2013, at 8:57 AM, kombo kai wrote:

> Hi grad users 
> I have the daily average ssts for 30 years in separate daily files. I want to merge the time steps of the files so a to have a single file having the daily average data for the whole 3o years period.
> It is easy to do with CDO but i fail to do it with grads
> please any one to direct me about this
> regards
> kaikombo
> 
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