1.2 Apple MAC OSX HYSPLIT install

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The HYSPLIT Mac installation is similar to a Windows PC except that the Mac OS supports the native display of Postscript files, therefore Ghostscript is not required. However, if you are running the LINUX scripts in a terminal window, the gs display command will fail unless ghostscript has been installed. The other option is to replace gs with the open command. Depending upon how the LINUX scripts are copied to a Mac, you may need to correct the EOL character using the Mac equivalent of dos2unix.

  1. Tcl/Tk Graphical User Interface

    Although not required to run HYSPLIT, a GUI composed of multiple Tcl/Tk scripts is provided with HYSPLIT. The model can also be run using a command line interface. However, it is easier for novice users to use the Tcl/Tk interface. The HYSPLIT installation includes all the GUI scripts, but the Tcl/Tk interpreter is not part of the distribution. Tcl/Tk should be installed to the suggested default directory prior to installing HYSPLIT.


  2. Postscript and ImageMagick Converter

    The capability to convert the Postscript graphics to other graphical formats is enabled within the GUI through ImageMagick, which normally requires the prior installation of Ghostscript. However, on MAC systems Ghostscript is not required because the Preview function can be used to export the Postscript file to a select number of other formats. ImageMagick can then be used to convert these files to unsupported formats. Go to the ImageMagick web site to download the most recent Mac version.


  3. Postscript Viewer

    Not required. Use Preview, however, if there are too many Postscript frames in a file, Preview may have trouble converting the output to a viewable PDF. In this case you need to run catps2ps -m -i{old.ps} -o{new.ps} to remove unsupported commands from the Postscript file.

  4. Mac OSX 10.6 HYSPLIT Installation

    Open the installation package (hysplit4_v896.dmg) and copy the Hysplit4 directory to your $HOME directory. This version was compiled under OSX 10.12 using the INTEL FORTRAN compiler. Note that the trial version will work with all examples in this Tutorial and is the recommended version to install for the AMS short course.



  5. Optional Google Earth Viewer

    Go to the Google Earth web site to download the most recent Mac version.



  6. Starting the first time

    Once installed, open a terminal window or X-window and change directory to hysplit4/working. Then just execute the softlink ./hysplit4.tcl and the GUI should open if Tcl/Tk has been installed. If the softlink does not exist, one should be created in the working directory using the command ln -s ../guicode/hysplit4.tcl hysplit4.tcl. Never run the model from the guicode directory. If using an X-window, insure that the X-directory location (usually /usr/X11/bin) in file default_exec points to the location of xterm, which can be determined from the command which xterm.