I am attempting to run the HYSPLIT model daily for a 10 year period. I received the error message
“*ERROR* runset: Numb meteo grids exceed DEFGRID limit – 12”

Is there a restriction of the length the model can run for? If so how do I get around this or do I have to restrict it to a single year?

Yes there is a limit of 12 files. Certainly the model could be recompiled to support more but this is not a practical solution for simulations over long periods. You would have to extract the individual trajectories from a single output file. A better solution would be to run the model from a batch file or script, varying the start dates and naming the output files accordingly. Sample scripts can be found in the PC distribution under the examples/scripts directory.

Roland Draxler