Re: [ExternalEmail] Re: [ferret_users] Temperature calculation from potential temperature.

[Russ Fiedler <russell.fiedler@xxxxxxxx>]

Arrgghh. I got this backwards.

you want the forward calculation.

let temp_insitu = theta_fo(salt, temp_pot , p , p_ref )

or

let temp_insitu = theta_fo(salt, temp_pot , p , 0 )


Sorry about that.

Russ


On 31/10/16 17:56, Russ Fiedler wrote:
> Hi,
>
> You need the function THETA_FO with the reversed pressure arguments.
>
> http://ferret.pmel.noaa.gov/Ferret/documentation/users-guide/variables-xpressions/XPRESSIONS#_VPID_113 
>
>
>
> let temp_insitu = theta_fo( salt, temp_pot , p_ref , p )
>
> where p_ref is the reference pressure for potential temperature 
> (usually zero).
>
> i.e
>
> let temp_insitu = theta_fo(salt, temp_pot , 0. , p )
>
>
>
> Cheers,
> Russ
>
> On 31/10/16 17:19, Manche Shivashankar wrote:
> > Dear ferret users,
> >
> > I have a netcdf file in which potential temperature is one of the 
> > parameters.
> > Now I need tom convert this potential temperature to regular 
> > temperature.
> > How it could be done, Please anyone help me.
> >
> > Thanks and regards
> > Shivashankar