HYSPLIT Forum: hysplitbbs.arl.noaa.gov

I cannot seem to connect to the FTP server. Here is the error msg. Local directory now C:\HYSPLIT\working. Interactive mode Off . Connection closed by remote host. Local directory now C:\HYSPLIT\working. Interactive mode Off . Connection closed by remote host. while executing "exec ftp -n $ftparc(0)...

I used the online HYSPLIT, so whatever the default is. I assume 1 grid cell but it is not defined in the online version.

I ran a trajectory at 3 heights, 10 m, 100 m, and 200m (see attached), using the met file 20210617_06-11_hrrr, the same met file used in the ensemble trajectory above. My question now is, what does the ensemble say about the trajectories I just ran? Are they ok or of questionable accuracy? traj-0617...

I ran a forward trajectory ensemble at a starting height of 200 m AGL with HRRR from this morning. Here are the results. Is the divergence seen an indication that a single trajectory might not give reliable results this morning?

We often receive many odor complaints on days when there is an overnight, running into early morning temperature inversion. Would it make sense to set the height to "Automatic mid-boundary layer height?" (option in online version of HYSPLIT)?

. I am a regulator, and we respond to odor complaints. I often use trajectories to get an idea of which facility might be the odor source (this is independent of sending inspectors in the field). I run trajectories using online HYSPLIT with HRRR (archive or forecast) at a height of 10 m AGL (Jackson...