Danny M. Leung

Testing dust emissions using different CTSM roughness schemes: Background: CTSM's roughness scheme has been switched from z0param_method = 'ZengWang2007' to 'Meier2022'. Since we saw friction velocity (FV) changes caused big...

Given the new changes in ctsm5.3.0, I am about to arrive at a regional tuning approach that gives decent dust emissions and dust AOD in ctsm5_2_019/cam6.3.137. The three basic ideas...

@wwieder sure, my late cases are using surfdata_ne30np4.pg3_hist_1850_78pfts_c240908.nc. The latest case directory would be /glade/work/dleung/derecho_cases/ctsm_tests/CTSM5.2.019_CAM6_3_137_FLTHIST_ne30_test7.6.1_modify_c240921 The impacts of switching fsurdat is also discussed in this Github issue. I hope I'm...

Tuning the vegetation drag partition effect: After some discussions with @jfkok, he did not want to change of the plants' shape parameters in Okin's scheme (by assuming taller plants or...

@wwieder I am not so sure what the implication is? I think the code changes for tuning went through, but CESM might also want to have the correct dust_emis_fact in...

@fvitt maybe we can talk about this if you have an idea how to do this in `refractive_aerosol_optics_mod.F90`, thanks

@fvitt @tilmes After some study on the refactored optics modules, it seems like the function `refractive_index_sw` uses the refractive indices with the volume averaging method to sum up all refractive...

@fvitt @tilmes I have done some code cleanup. In the current setting, we set optics and deposition changes to apply to MAM and not CARMA/BAM. I did this by using...

@fvitt @tilmes The CAM dust tuning is done and ready for review. The science changes are all done. I merged the cam tag to the latest 6_4_128. I also made...

After testing the dust_emis_fact in the FHISTC_LTso case (SP mode with climo LAI) without nudging, the following dust_emis_fact values work best. These two will be in namelist_defaults_cam.xml: Leung_2023 in CLM6/CAM7...