HYSPLIT Model Updates

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Highlights of Recent Updates

February 08 Revision (4.8)

• new concentration grid plot color fill program and added to GUI
• revised conprob files (and GUI) to be consistent with box plots
• new GUI for box plots for ensemble simulation results
• UNIX testing script for version control
• emitimes permits multiple species on one particle when maxdim>1
• improved puff split-merge algorithm and added new namelist options
• removed FTP of NCEP GRIB-1 files from GUI menus
• added additional download options for HYSPLIT compatible data files

November 07 Revision (4.8)

• Plotting routines were modified in terms of centering, colors, and clipping
• Units were changed in the source-attribution code for consistency
• The internal vertical grid structure was corrected for high resolution input data
• Emissions were corrected to handle releases shorter than the model's time step
• The termination message shows if points fall outside the domain in terms of space or time
• Additional puff split-merge factors were moved from the constants to the namelist input
• A multi-trajectory geo-location option based upon measurment data was added to the GUI menu
• Cluster number labels were added to the trajectory plotting program
• A new GUI tab can be used to install model updates when they become available

August 2007 Revision (4.8)

• Mixed layer depth computed from minimum temperature
• Default short-range turbulence from profiles rather than fluxes
• Terrain correction for starting heights above mean sea level
• Automated source attribution configuration from measured data
• Integrated solution of the source-receptor matrix
• Modified meteorological data input algorithm for sfc obs

March 2007 Revision (4.8)

• Options to set the day/night anisotropy when using TKE fields
• Automatic selection of the most recent forecast data file
• New options to compute maximum and maximum average concentrations
• Updated namelist configuration menus with more information
• New map projections and latitude-longitude labeling options
• More flexible data FTP with server selection and progress widget