Click for answer. What data is used to calculate the trajectories and what is the the vertical resolution of the data?
• Click for answer. I have a question about section five “meteorological input data” in the HYSPLIT_4 USER’s GUIDE. In page 49, what are the meanings of “pole latitude & longitude”, “reference latitude & longitude”, “synch latitude & longitude”, “synch point X and Y” and the relation (or difference) between “reference grid size” and “number X & Y points”? Or would you tell me what are their values if I have gridded meteorological data within lat. 5 N to 60 N and long. 110 E to 140 E., one degree resolution and I want to plot the back-trajectory within the same area? • Click for answer. I am trying to better understand what the best approach is for calculating the HYSPLIT trajectories I need. I have mostly looked at using the EDAS data, but it has a lot of holes in it for the period I am interested in, so we wind up with trajectories truncated or not calculatable. I tried to fill in the holes with the FNL data. However, in one case when I calculated 120-hour backward trajectories from P
