how to specify MODAL AEROSOL type in CESM?

[psagar@utexas_edu]

I want to know how to specify modal aerosol type (e.g. MAM3 or MAM7) in CESM. Which modal aerosol is used by default in CAM5? Are there any specific COMPSETS that use MAM3 or MAM7?
Thank you, -Sagar

 

[santos]

It will depend on the version that you're using. MAM3 is the default in CAM5. MAM7 is present in most recent versions, but it is not "supported" (use at your own risk), and I don't think that we have released a compset so far. (I don't recall what's available in which version off the top of my head, but you can look at compsets in the documentation or in the output of "create_newcase -list compsets".)If there's not a compset, you can pick an existing compset and change the chemistry by modifying the variable "CAM_CONFIG_OPTS" to add "-chem trop_mam7", but I have never used MAM7, and I can't say if it works well (or at all) with any specific version and configuration of CAM5.

 

[psagar@utexas_edu]

Hi Santos,could you also tell me how to define MODAL_AERO in CESM? Many of the lines in the fortran file dust_intr.F90 starts with 'if defined MODAL_AERO .... thank you, -Sagar

 

[santos]

If you are using CAM5, or you have turned on one of the MAM chemistry packages, MODAL_AERO should be defined in the build already.