[ncl-talk] How to get Lat/Lon values of MSLP

[Guido Cioni]

Hey,
what you want to perform is a cyclone tracking. There are many examples on the NCL website regarding how to find the lot-lan indices of a multi-dimensional array (see Example 3 here https://www.ncl.ucar.edu/Document/Functions/Built-in/minind.shtml <https://www.ncl.ucar.edu/Document/Functions/Built-in/minind.shtml>). You just have to develop something out of this. 

Please note that if you want to track the cyclone movement you need to develop a conditional sampling that does not consider the entire domain when looking for the MSLP minimum. I suggest you to have a look at the relevant literature before starting to write a NCL script. 

Mary is trying to publish one of my script that allows to track a cyclone directly from the output but we still need to adapt it. I'm attaching the script that I'm using for regular lat-lon grid but I believe it would take it more time for you to understand all my notations than to write your own :) 

Good luck 



> On 09 May 2017, at 15:19, Gaurav Tiwari <gaurav16 at iiserb.ac.in> wrote:
> 
> 
> Hi All,
> I want to get the Lat/Lon values of MSLP (i.e. eye of a hurricane) from a wrfout.nc <http://wrfout.nc/> file. Kindly let me know the procedure or if anyone have the script for the same please share with me.
> 
> --Gaurav
> 
> 
> *************************************************************************
> Gaurav Tiwari
> Research Scholar
> Department of Earth and Environmental Sciences
> Indian Institute of Science Education and Research Bhopal 
> (IISER B)
> Bhopal- 462066, Madhya Pradesh
> Email: gaurav16 at iiserb.ac.in <mailto:saquib16 at iiserb.ac.in>
> Mob: +91-7471112407
> LinkedIn <https://www.linkedin.com/in/gaurav-tiwari-bb36357a?trk=hp-identity-name>      Research gate <https://www.researchgate.net/profile/Gaurav_Tiwari5>
> 
> 
> 
> 
> <image001.png> Please consider the environment before printing this e-mail
> _______________________________________________
> ncl-talk mailing list
> ncl-talk at ucar.edu
> List instructions, subscriber options, unsubscribe:
> http://mailman.ucar.edu/mailman/listinfo/ncl-talk


Guido Cioni
http://guidocioni.altervista <http://guidocioni.altervista/>.org

-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://mailman.ucar.edu/pipermail/ncl-talk/attachments/20170509/b1e6dd31/attachment.html 
-------------- next part --------------
A non-text attachment was scrubbed...
Name: track_latlon.ncl
Type: application/octet-stream
Size: 6058 bytes
Desc: not available
Url : http://mailman.ucar.edu/pipermail/ncl-talk/attachments/20170509/b1e6dd31/attachment.obj 
-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://mailman.ucar.edu/pipermail/ncl-talk/attachments/20170509/b1e6dd31/attachment-0001.html