Re: local time computation

[Ansley Manke <ansley.b.manke@xxxxxxxx>]

Hi Yogesh,
Here is a message from the archives, answering a similar question.  It 
shows how to set up a mask to select just the daytime hours from a set 
of data.

  http://ferret.pmel.noaa.gov/Ferret/Mail_Archives/fu_2002/msg00246.html

Ansley

Yogesh K. Tiwari wrote:

> Hello Ferret Users,
>
> I have satellite observations for each month seperately in netcdf 
> format for the year 2003 which looks like :-
>
>  name    title   I   J     K       L
>  YEAR     Year  ... ...   ...   1:119641
>  MONTH    Month ... ...   ...   1:119641
>  DAY      Day   ... ...   ...   1:119641
>  HOUR     Hour  ... ...   ...   1:119641
>  MINUTE   Minute... ...   ...   1:119641
>  LON      Lon   ... ...   ...   1:119641
>  LAT      Lat   ... ...   ...   1:119641
>  CO2      CO2   ... ...   ...   1:119641
>
>
> Here L is running index.
>
> All above time variables are universal time.
>
> Now My question is :-
>
> Can we separate here CO2 variable as day observations (6:18 hrs) and 
> night observations (18:6 hrs) by using any 'if' condition in ferret 
> commands.
>
> Many thanks in advance for your help,
>
> Regards,
> Yogesh