Back trajectories

[arl.noaa]

I am trying to model a reverse trajectory for an ozone monitoring station. Several of the readings occurred in June. How can I do this?

Thanks in advance

[glenn.rolph]

On the web, you will need to run the Archived Trajectories under the URL:
http://ready.arl.noaa.gov/HYSPLIT_traj.php

We would recommend you use either the EDAS 40 km meteorological data or the NAM 12 km meteorological data for the United States.
Then set the time you want the trajectory to start (in the backward mode, you set the time the air reached your sampler) and then select the Backward button.

[gracy.hm]

Hi,
Can someone tell me that the MODEL VERTICAL VELOCITY option in the online version of Hysplit [ RIGHT side of figure in circle] corresponds to which option in the registered PC (window) version [ LEFT side of options in figure]

Please have a look at Image

I shall be extremely thankful for any reply.
Thanks
Gracy

[glenn.rolph]

The web option "Model Vertical Velocity" corresponds to the "input model data" option in the PC version.