Release Notes

• Describe how to get PV into MET_CRO_3D file
• Describe how to process landuse for dust
• Describe how to process hourly NLDN for lightning

[lizadams]

How does the user turn on the Ozone scaled by Potential Vorticity (PV) option in CMAQv5.2?

• https://github.com/USEPA/CMAQ/blob/5.2Beta/CCTM/docs/Release_Notes/Potential_Vorticity_Scaling.md
  Found in sciproc.F
  #ifdef potvorto3
  SUBROUTINE PVO3 ( CGRID, JDATE, JTIME )
  The user turns on this option when building CCTMv5.2 using setting in bldit.cctm script
  #> user choice: build CMAQ with potential vorticity free-trop O3 scaling
  #set potvortO3

Note, the bldit.cctm script developed by Zac has less information in the comment line
#> Potential vorticity free-troposphere O3 scaling
#set potvortO3

See the additional notes section of https://github.com/CMASCenter/EPA-CMAQ/blob/5.2Beta/CCTM/docs/Release_Notes/Potential_Vorticity_Scaling.md

Added yesterday after interaction with EPA about this issue.