Deposition of cloud-borne aerosols in F_2000_CAM5

[chen63@illinois_edu]

I realized that the namelist setting in cam_in for aerosol dry and wet deposition is as follows:

&chem_inparm
aer_drydep_list = 'bc_a1', 'dst_a1', 'dst_a3', 'ncl_a1', 'ncl_a2', 'ncl_a3', 'num_a1', 'num_a2', 'num_a3', 'pom_a1', 'so4_a1',
'so4_a2', 'so4_a3', 'soa_a1', 'soa_a2'
aer_wetdep_list = 'bc_a1', 'dst_a1', 'dst_a3', 'ncl_a1', 'ncl_a2', 'ncl_a3', 'num_a1', 'num_a2', 'num_a3', 'pom_a1', 'so4_a1',
'so4_a2', 'so4_a3', 'soa_a1', 'soa_a2'

Does this mean in the default CAM5 (compset F_2000_CAM5), cloud-borne aerosols such as bc_c1 et al., do not undergo either dry or wet deposition processes?

Thanks!

 

[hannay]

Answer from  Xiaohong Liu:

The aer_drydep_list and aer_wetdep_list are used for diagnosis purpose of output. 

Both cloud borne and interstitial aerosols undergo dry deposition and wet deposition. 
Be noted that cloud borne (with respect to stratiform clouds, which means stratiform-cloud borne) 
aerosols are wet-scavenged by stratiform precipitation and not by convective precipitation, 
while interstitial aerosol (with respect to stratiform clouds) is wet-removed by convective precipitation  
but not by stratiform precipitation (since they are interstitial with respect to stratiform clouds).

The above are discussed in the Liu et al. (2012) GMD paper (in supplement).