[ncl-talk] calculation of translational speed of tropical cyclone

[Debashis Paul]

Dear Dennis Sir,
                yes, you are right, it is the storm speed. Thank you for
the help, I am able to compute it now.
*Debashis Paul*

*Research Scholar,NIT-RKL*
*Ph:+916002713628*
*E-mail: Debgeo668 at gmail.com <Debgeo668 at gmail.com>*


On Mon, Aug 17, 2020 at 7:15 AM Dennis Shea <shea at ucar.edu> wrote:

> ?translational speed of TC?   You mean movement of (say) the center (eye)?
> -----
>
> Use *gc_latlon*
> <http://www.ncl.ucar.edu/Document/Functions/Built-in/gc_latlon.shtml> to
> calculate the distance between (lat,lon) locations. Read documentation and
> examples
>
> You should know the times at each location
>
> iu = 4   ; km
> np = 1
>
> gcdist = *gc_latlon*(lat1,lon1, lat2,lon2, np,iu)   ; km
>
> t1 = ...
>
> t2 = ...
>
> dt = t2-t1    ; time span
>
>
> translation_speed = gcdist/dt
>
>
>
> On Sun, Aug 16, 2020 at 3:06 AM Debashis Paul via ncl-talk <
> ncl-talk at mailman.ucar.edu> wrote:
>
>> Hello everyone,
>>                Does anyone know how to calculate translational speed of
>> TCs using best track data having lat long values? Any kind of help will be
>> appreciated.
>> With best regards,
>> *Debashis Paul*
>>
>> *Research Scholar,NIT-RKL*
>> *Ph:+916002713628*
>> *E-mail: Debgeo668 at gmail.com <Debgeo668 at gmail.com>*
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