Unit for dispersion output

[dahalsishir]

Hello!

I am trying to interpret the HYSPLIT dispersion output for a location where back trajectories frequently hit the ground. I followed previous forum discussions on trajectory versus dispersion settings. I also explored Tutorial 13.3 and the batch script. What is the unit of the dispersion output if I assign unit emission at the receptor? Could you elaborate on when to assign 0 or 1 to Q?

Thank you!