The ge_dat/gridding directory contains:
- AGREF
  agref_us_2017platform_13may2021_v8.txt (US)
  amgref_can2015_mex2010_for2016beta_09mar2021_nf_v5.txt (Canada/Mexico)
- GRIDDESC
- MGREF
  mgref_onroad_MOVES3_23sep2021_v1.txt (for SMOKE-MOVES)
- SRGDESC
  srgdesc_CONUS12_2017NEI_17dec2019_13may2021_v3.txt (US)
  srgdesc_2015Canada_2010Mexico_03dec2018_07jan2019_v2.txt (Canada/Mexico)
- XPORTFRAC for 12US1 (for afdust/othafdust/othptdust adjustments)
