I am a beganier of the CESM running, I noticed that in cesm1.2.2 aerosol data are from ar5, like BC is ar5_mam3_bc_surf_2000_c120315.nc, and i want to know where can I find the information such as dataset explanation or notification, to help me understand about the basic imformation of those dataset and how they be made. how should I find ? Any suggestions would be great!Thank you !li