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

[Dennis Shea]

?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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