HYSPLIT Forum: hysplitbbs.arl.noaa.gov

Hello,

I need help. I acquired a trajectory a while ago, and went back today to collect the same trajectory in google maps view, but the result was different

Do you know why the two trajectories for the same day would be different?

Is there anything I can do ?

thanks for your help

I assume you meant you re-ran the trajectory at http://www.ready.noaa.gov/HYSPLIT_traj.php and you got a different result from a run you did a while ago. How could it be different? Probably one of the trajectory inputs was different: time, location (latitude/longitude/height), meteorology, etc. When you run a trajectory it is good practice to also save the text files CONTROL and SETUP, since those show the HYSPLIT inputs. The text file MESSAGE can also be saved.