CO2-O collisional deactivation rate in WACCM-X

[mkb1g12@soton_ac_uk]

Hey,

I was wondering how to find out and edit the CO2-O collisional deactivation rate (a.k.a. quenching rate) in WACCM-X? It'd be great to know for both v1.2.2 and the new v2.x releases too.

Cheers,
Matt Brown

 

[mkb1g12@soton_ac_uk]

Update:

I believe I've found it, it doesn't seem to appear in chem_mech.in etc, but is hard coded, search "rko" in the below links:

V1.2.2 - https://svn-ccsm-models.cgd.ucar.ed...s/atm/cam/src/physics/waccm/nlte_fomichev.F90
V2.0 - https://svn-ccsm-models.cgd.ucar.ed...nents/cam/src/physics/waccm/nlte_fomichev.F90

If this isn't right please let me know as I haven't found it anywhere else!

 

[mmills]

Yes, this de-activation rate is in the Fomichev code. It is not in the chemical mechanism because the excited CO2* is not a separate species in the chemical mechanism.