Hello WRF community.
1. Is there a way to change the concentration of CCN used in microphysics schemes ? Like by changing fortran modules in wrf/phys, or Registry, or even a simpler option like the namelist variable ccn_conc . I want to see how CCNs behave in the presence and absence of aerosols (to be supplied later in WRF chem) , how they affect precipitation even without chem turned on.
2. Doing a little literature review I have learned that in many microphysics schemes, CCN concentration is built in or prognostic (it doesn't really depend on aerosols). It can also be coupled with WRF chem results by using aerosol aware microphysics options. Is my understanding correct?
3. I also do not understand the exact purpose of ccn_conc = variable in the namelist. Does it change the default concentration of ccn in WDM schemes, hence reducing or decreasing precipitation, changing activation rates? Does it have any relation with aerosols?
I would be thankful if someone would clarify these confusions for me.
1. Is there a way to change the concentration of CCN used in microphysics schemes ? Like by changing fortran modules in wrf/phys, or Registry, or even a simpler option like the namelist variable ccn_conc . I want to see how CCNs behave in the presence and absence of aerosols (to be supplied later in WRF chem) , how they affect precipitation even without chem turned on.
2. Doing a little literature review I have learned that in many microphysics schemes, CCN concentration is built in or prognostic (it doesn't really depend on aerosols). It can also be coupled with WRF chem results by using aerosol aware microphysics options. Is my understanding correct?
3. I also do not understand the exact purpose of ccn_conc = variable in the namelist. Does it change the default concentration of ccn in WDM schemes, hence reducing or decreasing precipitation, changing activation rates? Does it have any relation with aerosols?
I would be thankful if someone would clarify these confusions for me.