Cloud sensitivity to CCN-INP using QNWFA_QNIFA_QNBCA_SIGMA_MONTHLY.dat file

[dnmz24]

Hi all,

I will be using the aerosol-aware Thompson scheme to look at the sensitivity of clouds to initial CCN and INP concentrations. I was wondering if I am supposed to change the content of the QNWFA_QNIFA_QNBCA_SIGMA_MONTHLY.dat file to do that. If not, I would appreciate your insights on how I can use this scheme to change the initial CCN-INP concentrations.

Thank you!

 

[Ming Chen]

Please look at the code "module_mp_thompson.F", find how variables from QNWFA_QNIFA_QNBCA_SIGMA_MONTHLY.dat can affect CCN and INP, and move on to modify relevant variables.
Due to limited human power in NCAR, we cannot provide detailed coding instructions.

 

[dnmz24]

Thank you for your reply. Is it also possible to directly update the W_WIF and I_WIF variables in the met_em files to perform the sensitivity tests using the Thompson aerosol aware scheme rather than updating the source .dat file? Thanks a lot!

 

[Ming Chen]

Yes that is feasible. I suppose this is a more efficient way to modify the data.