I am an aspiring Fortran learner and I am currently facing hard time to understand one of the Fortran’s project Aermod and to refactor it by our needs to perform as parallel looping structure. Hence, if any Fortran developer could give me a helping hand it would be a huge leap ahead for me?

I tried to go through the Aermod project and find the most time consuming subroutines and functions

I tried to make small changes to it but did not landed on any results.