What is available for downloading

The contents of this unregistered version include various HYSPLIT executables, sample source code, and scripts. The unregistered version is identical to the registered version in all respects, except that it will not work with forecast meteorological data fields. Also note that the size of this executable file is approximately 46 MB.

The installation program will copy all required files and create program startup and desktop shortcuts. When prompted, it is suggested that the code be installed to the default installation directory such as [drive]:\hysplit4. Simple names are suggested. Names with spaces may not be properly handled by the GUI and some of the older DOS-based utility programs.

The unregistered version includes the supplemental programs Tcl/Tk, Ghostview, and ImageMagick. If these programs are already installed, just cancel at each prompt. More information and detailed instructions on these supplemental programs can be found at - http://www.ready.noaa.gov/ss/models/gethysplit.html

To download the unregistered version of HYSPLIT, you must follow these instructions: