Set up GEOS-Chem environment

GEOS-Chem-classic only uses OpenMP parallelization so there is no need for MPI libraries. Having Fortran compiler and NetCDF library installed is sufficient for GC-classic to compile and run.

Environment variables

Just follow our wiki. The bashrc used for the tutorial AMI is available for reference.

Source code, run directory and input data

Again, just follow the wiki.

Since all data are now available on S3, no need to pull them from other places.