All the IDL code used for the project is here.

computing
  - contains all the programs used for calculating divergence, gridding the
    datasets, etc.
plotting
  - contains all the programs used to make the plots of the datasets.
lidl
  - contains all the common procedures called withing the project.

Each directory has its own README file to refer to.

***Before running any of the IDL programs be sure to set up your path
   properly.  The programs reference procedures within the lidl directory
   and unless the path variable is set IDL won't find them.  The IDL path
   variable is IDL_PATH
  
   ex: if using tcsh
     > setenv IDL_PATH <full pathname of lidl>