[gradsusr] Problem obtaining daily climatology

[krishnamohan]

Thankyou Gennifer. I will  try i manually

Krishnamohan

On 12/8/10, Jennifer Adams <jma at cola.iges.org> wrote:
> The 'modify' command does not calculate a daily climatology, and there
> is no way to do that directly in GrADS. You must use your own code and
> make decisions about how to handle leap days, filtering, and other
> complications.
> --Jennifer
>
> On Dec 8, 2010, at 4:23 AM, krishnamohan wrote:
>
>>
>> Hai,
>>
>> I was calculating daily climatology for 30 year ncep wind from 1979
>> to 2008 and i encountered a problem. As per grads tutorial i have
>> given the following commands
>>
>> 'reinit'
>> 'sdfopen /media/MEGA2/wind/ncep/uwind/level/u200/u200-1979-2009.nc'
>> 'set grads off'
>> 'set lat -20 40'
>> 'set lon 30 180'
>> 'set map 1 1 8'
>>
>> 'set t 1 365'
>> 'define uclim = ave(uwnd, t+0,t+10958,365)'
>>
>> and i am getting uclim properly
>>
>> but inorder to make it a climatological variable i used 'modify'
>> function
>>
>> 'modify uclim seasonal'
>>
>> then i got error
>>
>> MODIFY Error:  Invalid time scaling in defined variable, then i used
>>
>> 'modify uclim diurnal'
>>
>> will say 'Defined variable is now climatological' but is showing
>> same pattern for all the days
>>
>> As grads tutorial says
>>
>> seasonal   - For creating monthly or multi-monthly climatologies
>> diurnal    - For creating climatologies over a time period less than
>> a day
>>
>> ie there are only options for monthly or less than a day
>> calculation. what is the option for finding daily climatology using
>> this method
>>
>>
>> --
>> Krishnamohan.K.S
>> Junior Research Fellow
>> Department Of Atmospheric Sciences
>> Cochin University of Science and Technology
>> Cochin,India
>> _______________________________________________
>> gradsusr mailing list
>> gradsusr at gradsusr.org
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>
> --
> Jennifer M. Adams
> IGES/COLA
> 4041 Powder Mill Road, Suite 302
> Calverton, MD 20705
> jma at cola.iges.org
>
>
>
>


-- 
Krishnamohan.K.S
Junior Research Fellow
Department Of Atmospheric Sciences
Cochin University of Science and Technology
Cochin,India