Page 1 of 1

Initial HYSPLIT time step

Posted: August 10th, 2020, 2:49 pm
by DanClayton
Are there any plans on reducing the minimum time step to allow for shorter distance calculations? One example of the usefulness applies to one of my applications below.

I am calculating air concentrations and ground depositions. Some of the released particles are fairly large in size (> 1 cm), so they should deposit very quickly. Even though I initialize them at low heights (<1 m) with a PARINIT file, they still travel over the first time step (1 min), spreading those particles over ~0.25 km (depending on the wind speed) and diluting the calculated ground deposition values. Having a smaller initial time step would reduce this effect.

Re: Initial HYSPLIT time step

Posted: August 13th, 2020, 11:19 am
by alicec
When a time step smaller than 1 minute is needed we would recommend use of the inline HYSPLIT. ... -coupling/