HYSPLIT Forum: hysplitbbs.arl.noaa.gov

Thanks for all your work on HYSPLIT.

I am trying to write my own scripts (in MATLAB) to run HYSPLIT and analyze the results. However, I am having trouble reading in the binary files. I have the PC version of HYSPLIT (Windows, Feb 2016, svn:802). The executable conread would work, except it requires user inputs (filename, Extended diagnostics (0/1), Enter) after it has started, which makes it difficult to put in a script. Is there some way to use conread with just 1 command line, similar to con2asc? I would prefer not to have to convert to another format if possible.

It turns out the source code for this executable is already included in the downloadable version of HYSPLIT (data2arl/utilities/conread.f). Looking at the code, there is no option natively to include all the input arguments on one line. However, I was able to solve this myself by modifying the code to accept the filename and turn on/off "Extended diagnostics" from a single line. Now I can read the binary files into MATLAB without any direct intervention (with MATLAB's "system" command).

I compiled conread.f using gfortran after some format modifications. Also to anyone else who may attempt their own modifications, you may need to explicitly specify CONVERT='BIG_ENDIAN' as an argument when opening the file (line 87 in the original).

I've attached my version (note it's actually a fortran source code file and you may need to change the extension if you use it). After compiling you can run using the "-h" argument to see help.

Conread.txt file is automatically getting bigger (while working on Hysplit) on my working directory and already took 84 GB. Can I delete this file or clean up ?

conread.txt is created whenever you use the "Simple Listing" program of the GUI to look at the contents of a binary concentration file. It is a text file and can be opened to read it, however if you no longer need it, delete it.