Adjust the HNO₃ dry deposition

[XIAO]

I am using CMAQ v5.3.1 with the M3Dry dry deposition scheme. I would like to modify the dry deposition velocity of gaseous HNO₃ for a sensitivity experiment. May I ask which part of the CCTM source code controls HNO₃ dry deposition and how this can be adjusted?

[lizadams]

We recommend upgrading to the latest version of CMAQ v5.5.

Please also search the forum for previous posts about HNO3 dry deposition as they may provide the answer that you need.

About HNO3 dry deposition velocity

How you approach this depends on what processes you are considering and the CMAQ model options. If you are using the M3Dry deposition option: Constants related to cuticular and soil resistances by deposition species are found in: AS_DATA_MOD.F All other surface resistances are estimated in: m3dry.F The aerodynamic and stomatal resistances are passed down from the meteorological model All modifications will require a recompile of the code. Documentation can be found in Pleim and Ran 2011 (A…