Dear would you let us know what kind of comparison you are talking about? are you referring to the advancement in WRF versions? If you need to know advancement then follow the Stavros Dafis and you can look updates for every version. If you want to specifically see that which physical schemes or other static datasets added to WRF then follow the following link and see the tables related to physics options
Thank you Shahzad and Stavros for the quick response.
I was wondering about temperature comparisons. For example, how different the simulated T2 for each versions using the same physics and dynamics settings common to all versions, same domain, and period.