On The Accuracy Of Different Types Of
Trajectories
Author(s)
A. Stohl & P. Seibert
Abstract
Long-range transport processes are often investigated by calculating air mass
trajectories or multiple particle trajectories. Several alternative calculation tech-
niques are currently in use, sometimes producing significantly different results.
It is not possible to determine which of the trajectories are most accurate with-
out using a tracer that is conserved along the real three-dimensional trajectories.
Here, conservative meteorological quantities, potential vorticity, specific humidity
and potential temperature, are used as tracers. As these tracers are conserved
only in the absence of diabatic processes, regions of the atmosphere where these
processes are most important are excluded. Tracer conservation along six differ-
ent types of trajectories is
Keywords
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