Set up a back trajectories simulation via HYSPLIT following the introduction during lecture. You can choose any place as the source location, any start time as you like. Set the total run time to $72$ hours, the automatic mid$-$boundary layer height to $"$no$",$ and choose a level $1$ height for your simulation.

a$)$ Please give the general information of your simulation as below and attached the figure that generated as simulation results.

Location:

Latitude:

Longitude:

Height:

Start time:

Total trajectories number:

b$)$ Emissions from what directions are most likely to affect the air quality at the location you chose during the $72$ hours period? Are you able to identify the stability of the atmosphere at the location from your simulation results?