Hysplit output quality
Hysplit output quality
Can someone suggest a good reference or several references on "precision" of the Hysplit model? I got a terrible reviewer's comment stating that "The precision of these trajectories is insufficient".
Re: Hysplit output quality
Could you provide more information on what the reviewers were objecting to? Sometimes they have an issue with the resolution of the meteorological data used.
This technical paper describes the method of computing trajectories.
https://www.arl.noaa.gov/documents/reports/MetMag.pdf
The integration time step ()t) can vary during the simulation. It
is computed from the requirement that the advection distance per time-step should be less than
0.75 of the meteorological grid spacing.
The integration method (e.g. Kreyszig, 1968) is common and has been used for trajectory
analysis (Petterssen, 1940) for quite some time. Higher-order integration methods were
investigated but as long as the data observations are linearly interpolated from the grid to the
integration point, higher-order methods will not yield greater precision.
This technical paper describes the method of computing trajectories.
https://www.arl.noaa.gov/documents/reports/MetMag.pdf
The integration time step ()t) can vary during the simulation. It
is computed from the requirement that the advection distance per time-step should be less than
0.75 of the meteorological grid spacing.
The integration method (e.g. Kreyszig, 1968) is common and has been used for trajectory
analysis (Petterssen, 1940) for quite some time. Higher-order integration methods were
investigated but as long as the data observations are linearly interpolated from the grid to the
integration point, higher-order methods will not yield greater precision.