HYSPLIT Forum: hysplitbbs.arl.noaa.gov

I’m trying to cluster back trajectories (120-h, 500 m agl, Traj skip=1) in Hysplit4 but the program assigns more than 90 % of the calculated BT to cluster #0 (WARNING:” traj not long enough; traj not clustered” in the CMESSAGE file). I have tried running the cluster analysis several times and I have tried using a few different sets of trajectory files
Thanks for the attention, hope someone helps me

Please check your trajectories to verify they are at least 120-h long.

Does it work with that same set of trajectories for a shorter duration such as 24-h?

yes, trajectories are 120-h long.
It doesn't work also with shorter trajectories

Please send a subset of the trajectories with a case that fails so I can reproduce the issue.

Attached a subset of the trajectories used

thanks

I don't see the attachment. Please try again.

Please, see a new attached
thanks

I just opened several files and none of them are for 120-hours. For example
.fdump14060612 - 8 hours
.fdump14060412 - 9 hours
.fdump14050100 - 0 hours
.fdump14060218 - 3 hours

Hence if you are clustering for 120 hours, none of these I looked at would be used.