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

[Debashis Paul]

Dear Jalal Uddin,
                 Thanks for the information. Yes, you are right, the new
database from IBTracs contains the information of TC translation speed and
direction.
With best regards,
*Debashis Paul*

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


On Mon, Aug 17, 2020 at 1:01 PM Md. Jalal Uddin <dmjalal90 at gmail.com> wrote:

> 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>*
>>> _______________________________________________
>>> ncl-talk mailing list
>>> ncl-talk at mailman.ucar.edu
>>> List instructions, subscriber options, unsubscribe:
>>> https://mailman.ucar.edu/mailman/listinfo/ncl-talk
>>
>> _______________________________________________
>> ncl-talk mailing list
>> ncl-talk at mailman.ucar.edu
>> List instructions, subscriber options, unsubscribe:
>> https://mailman.ucar.edu/mailman/listinfo/ncl-talk
>
>
>
> --
> *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
> YouTube channel: http://www.youtube.com/c/MdJalalUddindmjalal90
> Cell: +8613260859092, +8801792052662
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <https://mailman.ucar.edu/pipermail/ncl-talk/attachments/20200817/f7ecb643/attachment.html>