Trajectory option

Topics about the HYSPLIT trajectory model.

Trajectory option

Postby gracy.hm » December 13th, 2013, 1:52 am

Hi,
when we plot trajectories which option we should take to plot trajectories. Iscentropic trajectories calculation or Sigma calculation for trajectories calculation.
In my case when I am running iscentripic trajectories I am getting strong westerlies while as when I am calculation using sigma coordinated my air masses are circulating around my location. So our interpretation of results will be entirely different in both the cases, which option to select.
RED colour shows -Iscentropic trajectories
BLACK colour shows- SIGMA
other settings are same for both of them


Thanks
Gracy
Last edited by gracy.hm on December 15th, 2013, 2:03 am, edited 1 time in total.
gracy.hm
 
Posts: 5
Joined: November 28th, 2012, 12:19 pm

Re: Trajectory option

Postby ariel.stein » December 13th, 2013, 10:40 am

Using the sigma option forces the model to keep the trajectories at the same vertical level and there is no vertical motion for the duration of the run. I would not recommend using this option unless you do it for model evaluation purposes.
Please refer to the following link for further information about trajectories vertical motion.
http://www.meteozone.com/home/tutorial/ ... _vert.html
ariel.stein
 
Posts: 51
Joined: November 7th, 2012, 3:14 pm


Return to Trajectory Model

Who is online

Users browsing this forum: No registered users and 1 guest

cron