As an example, from 40N, 80W, 500 m agl, run 48-hour backward trajectories daily from 12 UTC in January 1996 using the NGM
archive data. First do the January 1 trajectory manually and confirm it ran (image to right). For the automated trajectories, the year, month,
and date must be explicitly set. If trajectory cluster analysis will be done, it is recommended that you make an output
directory, and specify the output path/file such as c:/hysplit4/working/endpts/jan96/tdump. For a complete set of
trajectories, NGM archive files ngm.dec95.002, ngm.jan96.001, and
ngm.jan96.002 must be specified.