Is model terrain following?

Topics about the HYSPLIT dispersion model.

Is model terrain following?

Postby arl.noaa » November 9th, 2012, 3:27 pm

Is the dispersion component of the model terrain following? Ie. If I'm using the NOAA NCEP/NCAR re-analysis data, and looking at dispersal of particulates for which changes in terrain (height) can affect their descent from the PBL, is it correct to assume this is accounted for in the model?

Thanks once again, in advance, for your assistance.
arl.noaa
 
Posts: 32
Joined: November 9th, 2012, 2:49 pm

Re: Is model terrain following?

Postby glenn.rolph » November 9th, 2012, 3:48 pm

Yes, the model vertical grid coordinate is terrain following, however, the terrain comes from the meteorological data set you are using and since you are using the coarse NCEP/NCAR Re-analysis data the resolution is only 2.5 degrees or about 275 km. Therefore, you will not be resolving much in the way of smaller scale features in the terrain. This may greatly impact your results if they indeed rely on resolving the terrain features.
glenn.rolph
 
Posts: 102
Joined: November 7th, 2012, 1:39 pm


Return to Dispersion Model

Who is online

Users browsing this forum: No registered users and 1 guest

cron