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

[Md. Jalal Uddin]

A new version of IBTrACS provides TC translation speed and direction, which
can be downloaded from the official website (https://www.ncdc.noaa.gov).

On Mon, 17 Aug 2020 at 09:45, Dennis Shea via ncl-talk <
ncl-talk at mailman.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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-- 
*Md. Jalal Uddin*
PhD candidate - Atmospheric Physics and Atmospheric Environment (NUIST)
M.Sc. in Applied Meteorology (NUIST)
B.Sc. in Disaster Management (PSTU)
https://dmjalal90.weebly.com/
https://www.researchgate.net/profile/Md_Uddin125
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