**Step 1.** Use e3sm unified env:
`source /global/common/software/e3sm/anaconda_envs/load_latest_e3sm_unified_pm-cpu.sh`
`conda activate e3sm_unified_latest`

**Step 2.** Clone FlexEmis:
`git@github.com:eagles-project/FlexEmis.git`

**Step 3.** Put all input emissions and vertical profile data in a single directory. (i.e. input_emis_data)

**Step 4.** Put all output grid files in a single directory (can be the same input dir above). (i.e. out_grid)

**Step 5.** 