Dear Md Tariqul Islam,

You need to find some formulas to calculate the center of the cyclone, which you will find in many past studies. Use those formulas in wrf output data to get the center. It may be an alternative way!

Best

Thanks Dear Bijay for your answer. For sure it will be a nice direction to work on.

As suggested by NCL graphics, vortex following WRF compilation can track cyclone path automatically. So, I was looking for some suggestions from the users who used the same vortex follloing + em_tropical_cyclone compilation to track the storm. As I am not that experienced in WRF modeling, I was trying to use some already available options/script to do the same. I am confused whether my vortex following compilation was not properly done or my definition of namelist variables are error some which eventually is causing the problem.

Dear Mr Islam,

I am not sure as to whether you were able to solve your problem. I noted that your simulated run is 15 days, which is quite long for recreating a TC. With that being said, it might be the case that no ATCF data is generated for the first couple of time steps, depending on the presence of a TC in the second nest. If the TC is present from the beginning of the simulation, WRF should produce track data (double-check using "grep ATCF rsl.out.0000"). Furthermore, I noted that you track the TC on the 500 hPa level - I would recommend using 850 hPa instead.

Hope this helps,

Thomas.

Thank you Mr Thomas for your guidelines. Maybe it was one of the reasons for this problem. Finally i was able to generate ATCF data using vortex following compilation with em_real option. Previously i tried with em_ ideal & i received one feedback to recompile wrf with em_ real instead of em_ ideal. And that worked!

Currenctly i am facing another problem with variable data extarction. I am trying to use tslist to get timeseries data for some specific locaations. But my simulation is not generating any. TS data file. I am not sure whether it's due to my vortex folloing compilation or for some other problem. Do you have any suggestions on that?

Thanks again.

I am pleased to hear that you were able to solve the issue with generating ATCF data.

Regarding the tslist question, I personally don't have any experience with that unfortunately. However, maybe page 44 of this PDF https://www.climatescience.org.au/sites/default/files/WRF_options.pdf might be of help. If that does not help, you could try to obtain the time series using NCL lat/lon functions. Hope this helps, Thomas.

Thanks again for your help. My problem is solved now. It was some file format issue which was causing problem while extracting variable data.