ARL data  or WRF data  as input

Hi, 

I would like to use splitr to generate back trajectories or dispersion plots from WRF or ARL data instead of global data sets. 
HYSPLIT has the option to convert WRF to ARL files, and then ARL files can be used to run trajectory analysis. 
I have ARL files and am looking for options to run splitr using them.

Is it possible? 

thank you 