[gradsusr] Monthly mean from 16-days interval data for one year

[Rafanoharana Serge Claudio]

Hi again,

Any idea about my problem? Anyway, I faced another issue when I "cdo" my
data.
Since my data is 16-days time interval during one year, I used:

cdo -r mergetime 1.nc 17.nc 33.nc 49.nc 65.nc 81.nc...321.nc 337.nc 353.nc
result.nc

Then, when I open the file, I obtain the message:

ga-> sdfopen result.nc
Scanning self-describing file:  result.nc
gadsdf: Time unit has too small an increment (min. 1 minute).

The result of "ncdump result.nc"
 .......
 .......
 time = 0, 0, 1, 4, 15, 27, 53, 113, 129, 145, 161, 177, 193, 209, 225, 241,
257, 273, 289, 305, 321, 337, 353 ;
 .......
 .......

Then I tried to convert the time using sed and ncgen:

sed -e 's/time = 0, 0, 1, 4, 15, 27, 53, 113, 129, 145, 161, 177, 193, 209,
225, 241, 257, 273, 289, 305, 321, 337, 353 ;/time =  1, 2, 3, 4, 5, 6, 7,
8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23 ;/g' test.cdl >
test1.cdl

ncgen -o result_corrected.nc test1.cdl


And the result of ncdump result_corrected.nc gives:

 .......
 .......
 time = 353 ;
 .......
 .......

instead of 1, 2, 3 ..., 23.

Then I go back again to my first question in order to obtain the monthly
mean (My previous post).

Any suggestion would be very helpful.

Best regards,

Serge


2011/6/21 Rafanoharana Serge Claudio <rafanoharana at gmail.com>

> Dear all,
>
> I would like to ask on how to obtain the monthly mean from 16-days interval
> data within one year.
>
> From daily data, I can easily get it using:
>
> cdo -r mergetime 1.nc 2.nc 3.nc ..... 366.nc result.nc
> cdo -r monmean result.nc final.nc
>
> but from 16-days interval, I have 23 files and even if I merge them, I will
> end with TSize =23
>
> Any idea will be very helpful.
>
> Regards,
>
> --
> Serge
>



-- 
Serge
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