suite_cam6.xml

<?xml version="1.0" encoding="UTF-8"?>

<suite name="cam6" version="1.0">
  <group name="physics_bc">
    <!--cam6:  deep=ZM, shallow=CLUBB, macrop=CLUBB, microp=MG2, radiation=RRTMG, chem=trop_mam4 -->
    <time_split>
      <scheme>physics_state_check</scheme> <!-- Only if state_debug_checks is True. This scheme only looks for infs/nans, and kills the model if found. -->
      <scheme>clybry_fam_adj</scheme>      <!-- Only matters if chemistry package with Cly and Bry is used -->
      <!-- Negative moisture/tracer check -->
      <!-- **************************** -->
      <scheme>qneg</scheme>               <!-- This scheme modifies the state directly.  Combine with state check? -->
      <!-- **************************** -->
      <scheme>physics_state_check</scheme>      <!-- Only if state_debug_checks is True. This scheme only looks for infs/nans, and kills the model if found. -->
      <scheme>diag_state_b4_phys_write</scheme> <!-- Diagnostics -->
      <!-- energy and momentum fixer -->
      <!-- **************************** -->
      <scheme>calc_te_and_aam_budgets</scheme>           <!-- Managed by host model? Diagnostic output suffix = 'pBF' -->
      <scheme>check_energy_fix</scheme>                  <!-- Only matters if dycore is FV (called "LR" in physics) or SE-->
      <scheme>check_energy_cam_update_pre_chng</scheme>  <!-- Placeholder for CAM updates and diagnostic output calculations before "chng" call. -->
      <scheme>check_energy_chng</scheme>                 <!-- Global integral checker required for certain diagnostic outputs -->
      <scheme>check_energy_cam_update_post_chng</scheme> <!-- Placeholder for CAM updates and diagnostic output calculations after "chng" call. -->
      <scheme>calc_te_and_aam_budgets</scheme>           <!-- Managed by host model? Diagnostic output suffix = 'pBP' -->
      <!-- **************************** -->
      <scheme>diag_conv_tend_ini</scheme>      <!-- Initalizes convective-scheme diagnostic outputs -->
      <scheme>calc_dtcore</scheme>             <!-- diagnostic calculation.  Could likely be included in energy fixer scheme. -->
      <!-- Dry adiabatic adjustment  -->
      <!-- **************************** -->
      <!-- Technically only needs temperature and humidity as inputs -->
      <scheme>dadadj_calc_update</scheme>      <!-- Actual dry adiabatic adjustment scheme, with placeholders for CAM accumulation calculations -->
      <!-- **************************** -->
      <!-- Zhang-Macfarlane deep convection scheme -->
      <!-- **************************** -->
      <scheme>zm_convr</scheme>                 <!-- Actual deep convection routine -->
      <scheme>zm_convr_cam_update</scheme>      <!-- Placeholder for CAM updates and diagnostic output calculations -->
      <scheme>zm_conv_evap</scheme>             <!-- Actual ZM rain evaporation scheme -->
      <scheme>zm_conv_evap_cam_update</scheme>  <!-- Placeholder for CAM updates and diagnostic output calculations -->
      <scheme>momtran</scheme>                  <!-- Actual ZM momentum transport scheme -->
      <scheme>momtran_cam_update</scheme>       <!-- Placeholder for CAM updates and diagnostic output calculations -->
      <scheme>convtran</scheme>                 <!-- Actual ZM convective transport scheme, for constituents in cnst_is_convtran1 -->
      <scheme>convtran_cam_update</scheme>      <!-- Placeholder for CAM updates and diagnostic output calculations -->
      <!-- **************************** -->
      <scheme>check_energy_chng</scheme>        <!-- Global integral checker required for certain diagnostic outputs -->
      <scheme>check_tracers_chng</scheme>       <!-- Global tracer mass checker that kills model if error is large enough. -->
      <scheme>sslt_rebin_adv</scheme>           <!-- Only matters if certain sea salt species are present in chemistry package-->
      <subcycle loop="cloud_macmic_num_steps">  <!-- Cloud macrophysics-microphysics loop -->
        <!-- CLUBB turbulence, convection, and macrophysics -->
        <!-- **************************** -->
        <!-- The commented-out schemes below are all included in the "clubb_input_prepare" scheme -->
        <!-- ++++++++++++++++++++++++++++++
        <scheme>set_dry_to_wet</scheme>                  Convert mixing ratios from dry air to air + water vapor
        <scheme>grid_size</scheme>                       Calculate grid-cell size
        <scheme>clubb_dtime_calc</scheme>                Calculate CLUBB time-step as function of host model time-step
        <scheme>exner_clubb</scheme>                     Calculate Exner function using CLUBB definition
        <scheme>clubb_thermo_vars</scheme>               Calculate various thermodynamic variables needed for CLUBB (Theta-V, Theta-L, etc.)
        <scheme>tropopause_findChemTrop</scheme>         Calculate tropopause height
        <scheme>clubb_vertical_grid_create_inv</scheme>  Create CLUBB vertical grids, which is in the opposite order of CAM
        <scheme>clubb_thermo_vars_grid</scheme>          Calculate additional thermodynamic variables that are on the CLUBB vertical grid
        <scheme>clubb_calc_ustar</scheme>                Only matters for single-column mode
        <scheme>setup_grid_heights_api</scheme>          Re-calculate CLUBB grid heights
        <scheme>setup_parameters_api</scheme>            Re-calculate grid-dependent CLUBB parameters
        <scheme>zt2zm_convert</scheme>                   Transition variables on thermodynamic levels to momentum levels
        <scheme>clubb_calc_input_vars</scheme>           Calculate additional CLUBB input variables
        +++++++++++++++++++++++++++++++ -->
        <scheme>clubb_input_prepare</scheme>             <!-- Prepare inputs for the "CLUBB" turbulence/convection/macrophysics scheme -->
        <scheme>clubb_var_vert_inv</scheme>              <!-- Change order of vertical levels for CLUBB input variables -->
        <subcycle loop="clubb_time_substep">             <!-- CLUBB sub-step loop (number of iterations should be calculated in the "clubb_dtime_calc" scheme), CAM6 var = 'clubb_nadv' -->
          <scheme>stats_begin_timestep_api</scheme>      <!-- Only matters if "l_stats" is True -->
          <scheme>advance_clubb_core_api</scheme>        <!-- Actual CLUBB parameterization scheme -->
          <scheme>update_xp2_mc_intr</scheme>            <!-- Only matters if "do_rainturb" is True -->
          <scheme>calculate_thlp2_rad_intr</scheme>      <!-- Only matters if "do_cldcool" is True -->
          <scheme>stats_end_timestep_clubb</scheme>      <!-- Only matters if "l_stats" is True -->
        </subcycle>
        <!-- The commented-out schemes below are all included in the "clubb_output_prepare" scheme -->
        <!-- ++++++++++++++++++++++++++++++
        <scheme>zm2zt_convert</scheme>                   Transition variables on momentum levels to thermodynamic levels
        <scheme>clubb_calc_output_vars</scheme>          Calculate additional CLUBB output variables
        +++++++++++++++++++++++++++++++ -->
        <scheme>clubb_output_prepare</scheme>            <!-- Prepare CLUBB outputs for use in the host model -->
        <scheme>clubb_var_vert_rev</scheme>              <!-- Change order of vertical levels for CLUBB output variables back to host model ordering -->
        <scheme>clubb_upper_diss</scheme>                <!-- CLUBB energy and total water mass fixer -->
        <scheme>clubb_cam_update</scheme>                <!-- Placeholder for CAM updates and diagnostic output calculations -->
        <scheme>liquid_macro_tend</scheme>               <!-- Only matters if "clubb_do_liqsupersat" is True-->
        <scheme>liquid_macro_CAM_update</scheme>         <!-- Placeholder for CAM updates and diagnostic output calculations -->
        <scheme>conv_cond_detrain_calc</scheme>          <!-- Calculate the host model cloud condensate and energy tendencies produced by convective detrainment -->
        <scheme>conv_cond_detrain_cam_update</scheme>    <!-- Placeholder for CAM updates and diagnostic output calculations -->
        <scheme>set_wet_to_dry</scheme>                  <!-- Convert mixing ratios from air + water vapor to dry air -->
        <scheme>clubb_diag_output</scheme>               <!-- Calculate numerous different CLUBB diagnostic variables, and output them to history file -->
        <!-- **************************** -->
        <scheme>check_energy_chng</scheme>            <!-- Global integral checker required for certain diagnostic outputs -->
        <partition gen="subcol_generator_name" avg="subcol_averager_name">
          <process_split>
            <!-- MG aerosol microphysics -->
            <!-- **************************** -->
            <scheme>hetfrz_classnuc_cam_save_cbaero</scheme> <!-- Save copy of cloud-borne aerosols (only needed if use_hetfrz_classnuc is True) -->
            <scheme>aero_get_num_mmr</scheme>                <!-- Collect particle number and mass mixing ratios for each aerosol species, unless already managed by framework -->
            <scheme>aero_calc_wsub</scheme>                  <!-- Calculate subgrid-scale vertical velocity -->
            <scheme>nucleate_ice_cam_calc</scheme>           <!-- Calculate ice nucleation -->
            <scheme>lcldm_min_check</scheme>                 <!-- Check that low cloud fraction is above threshold -->
            <scheme>aero_cam_drop_activate</scheme>          <!-- Calculate droplet activation -->
            <scheme>aero_cam_contact_freezing</scheme>       <!-- Calculate contact freezing -->
            <scheme>ndrop_bam_ccn</scheme>                   <!-- Calculate bulk CCN concentration (only needed if clim_modal_aero is False) -->
            <scheme>hetfrz_classnuc_cam_calc</scheme>        <!-- Calculate heterogeneous freezing (only needed if use_hetfrz_classnuc is True) -->
            <scheme>microp_aero_diag_output</scheme>         <!-- Output diagnostics from MG aerosol microphysics. -->
            <!-- **************************** -->
            <!-- MG cloud microphysics -->
            <!-- **************************** -->
            <scheme>micro_mg_get_cols3_0</scheme>       <!-- Determine atmospheric columns used by the MG2 microphysics schemes -->
            <scheme>calc_incloud_LWP</scheme>           <!-- Calculate in-cloud Liquid Water Path (LWP) before MG2 is run -->
            <scheme>micro_calc_tropopause</scheme>      <!-- Calculate the cold-point tropopause for use by the microphysics -->
            <scheme>micro_mg_tend3_0</scheme>           <!-- Actual MG2 cloud micro-physics parameterization scheme -->
            <scheme>mg_calc_outputs</scheme>            <!-- Calculate additional MG2 output variables and diagnostics -->
            <scheme>calc_atm_density</scheme>           <!-- Calculate atmospheric density -->
            <!-- This section of code could likely be grouped together as one scheme (at least partially)-->
            <!-- +++++++++++++++++++++++++ -->
            <scheme>size_dist_param_liq</scheme>        <!-- Calculate size distribution of cloud droplets -->
            <scheme>micro_eff_radius_liq</scheme>       <!-- Calculate the effective radius of a given cloud droplet distribution -->
            <scheme>size_dist_param_liq_const</scheme>  <!-- Calculate size distribution of cloud droplets assuming a constant ncic -->
            <scheme>calc_ncic_grid</scheme>             <!-- Calculate ncic (number of cloud droplets?) in grid cell -->
            <scheme>size_dist_param_liq</scheme>        <!-- Calculate size distribution of cloud droplets -->
            <scheme>micro_eff_radius_liq</scheme>       <!-- Calculate the effective radius of a given cloud droplet distribution -->
            <scheme>micro_eff_radius_rain</scheme>      <!-- Calculate the effective radius of rain (assumed size distribution?) -->
            <scheme>micro_eff_radius_snow</scheme>      <!-- Calculate the effective radius of snow (assumed size distribution?) -->
            <scheme>micro_eff_radius_graupel</scheme>   <!-- Calculate the effective radius of graupel (only if MG microphysics version 3 or later is used) -->
            <scheme>calc_niic_grid</scheme>             <!-- Calculate niic (number of cloud ice crystals?) in grid cell -->
            <scheme>size_dist_param_basic</scheme>      <!-- Calculate the size distribution of ice crystals -->
            <scheme>micro_eff_radius_ice</scheme>       <!-- Calculate the effective radius of a given cloud ice distribution -->
            <!-- +++++++++++++++++++++++++ -->
            <scheme>calc_micro_column_vars</scheme>     <!-- Calculate Liquid Water Path (LWP) and net column condensation -->
            <scheme>calc_prec_efficiency</scheme>       <!-- Calculate precipitation efficiency -->
            <scheme>micro_diag_output</scheme>          <!-- Calculate microphysics diagnostic variables, and output them to history file -->
            <!-- **************************** -->
            <scheme>massless_droplet_destroyer</scheme> <!-- Remove massless droplets, doesn't influences only grid-scale tendencies -->
          </process_split>
          <scheme>check_energy_chng</scheme>          <!-- Global integral checker required for certain diagnostic outputs -->
        </partition>
        <scheme>diag_clip_tend_writeout</scheme>      <!-- Output water mass clipping diagnostics to history file -->
        <scheme>check_energy_chng</scheme>            <!-- Global integral checker required for certain diagnostic outputs -->
        <scheme>calc_prec_sum</scheme>                <!-- Sum surface precipitation amounts over each subcycle loop -->
      </subcycle>
      <scheme>calc_prec_avg</scheme>                  <!-- Divide surface precipitation sum by number of "macmic" subcycle iterations -->
      <scheme>modal_aero_calcsize_diag</scheme>       <!-- Only if climatological aerosols are used instead of prognostic aerosols -->
      <!-- Modal Aerosol water uptake -->             <!-- Only if climatological aerosols are used instead of prognostic aerosols -->
      <!-- **************************** -->
      <!-- The commented-out schemes below are all included in the "modal_aero_wateruptake_dr" scheme -->
      <!-- ++++++++++++++++++++++++++++++
      <scheme>tropopause_find</scheme>                Calculate tropopause height
      <scheme>calc_h2so4_equilib_mixrat</scheme>      Calculate Sulfuric acid phase equilibrium, if modal_strat_sulfate is True
      <scheme>h2so4_equilib_diag</scheme>             Output sulfer aerosol diagnostics to history file
      <scheme>qsat_water</scheme>                     Calculate saturation vapor pressure with respect to liquid water
      <scheme>relhum_calc</scheme>                    Calculate the relative humidity
      <scheme>calc_atm_density</scheme>               Calculate atmospheric density
      <scheme>modal_aero_wateruptake_sub</scheme>     Actual aerosol moisture up-take parameterization
      <scheme>modal_aero_wetdens_calc</scheme>        Calculate the wet density of aerosols
      <scheme>modal_aero_wateruptake_diag</scheme>    Calculate aerosol water uptake diagnostic variables, and output them to history file
      ++++++++++++++++++++++++++++++++++ -->
      <scheme>modal_aero_wateruptake_dr</scheme>
      <!-- **************************** -->
      <!-- Aerosol wet deposition -->
      <!-- **************************** -->
      <scheme>modal_aero_calcsize_sub</scheme>        <!-- Calculate  aerosol size distribution parameters -->
      <scheme>modal_aero_wateruptake_dr</scheme>      <!-- Repeat "Modal Aerosol water uptake" schemes shown above -->
      <scheme>wetdep_prec_calc</scheme>               <!-- Calculate precipitation amount that impacts wet deposition -->
      <scheme>coarse_fact_calc</scheme>               <!-- Calculate "f_act_conv" for coarse mode aerosols (note here the comments don't match the variables) -->
      <subcycle loop="aerosol_dist_modes">            <!-- Loop over aerosol size distribution modes, CAM6 var = 'ntot_amode' -->
        <subcycle loop="aerosol_phase">               <!-- Loop over aerosol phase types (interstitial vs cloud-borne), CAM6 var = 'lphase' -->
          <scheme>aero_fact_calc</scheme>             <!-- Calculate aerosol activation fraction (f_act_conv) depending on aerosol type -->
          <scheme>wetdepa_v2</scheme>                 <!-- Actual aerosol wet deposition parameterization -->
          <scheme>wetdep_diag_output</scheme>         <!-- Calculate numerous different CLUBB diagnostic variables, and output them to history file -->
        </subcycle>
      </subcycle>
      <scheme>ma_convproc_intr</scheme>               <!-- Convective in-cloud aerosol removal parameterization, only used if convproc_do_aer is True -->
      <scheme>set_srf_wetdep</scheme>                 <!-- Add aerosol deposition rates to host model surface fluxes -->
      <!-- **************************** -->
      <scheme>convtran</scheme>                       <!-- Actual ZM convective transport scheme, for constituents in cnst_is_convtran2 -->
      <scheme>check_tracers_chng</scheme>             <!-- Global tracer mass checker that kills model if error is large enough. -->
      <scheme>diag_phys_writeout</scheme>             <!-- Calculate generic atmospheric physics diagnostics and output them to history file -->
      <scheme>diag_conv</scheme>                      <!-- Calculate generic precipitation and convection diagnostics and output them to history file -->
      <scheme>cloud_diagnostics_calc</scheme>         <!-- Calculate generic cloud diagnostics and output them to history file -->
      <!-- RRTMG radiation -->
      <!-- **************************** -->
      <scheme>calc_solar_zenith_ang</scheme>          <!-- Calculate the solar zenith angle for the given time step -->
      <scheme>group_day_night</scheme>                <!-- Determine which columns are in the day-side, vs night-side -->
      <scheme>tropopause_find</scheme>                <!-- Calculate tropopause height -->
      <!-- The commented-out schemes below are all included in the "rrtmg_state_prepare" scheme -->
      <!-- ++++++++++++++++++++++++++++++
      <scheme>rrtmg_state_create</scheme>             Create RRTMG state object
      <scheme>calc_cldfprime</scheme>                 Calculate "prime" cloud fraction
      <scheme>calc_ice_optics_sw</scheme>             Calculate cloud ice shortwave optics (case structure, may need to be broken up)
      <scheme>calc_liq_optics_sw</scheme>             Calculate cloud liquid shortwave optics (case structure, may need to be broken up)
      <scheme>calc_snow_optics_sw</scheme>            Calculate snow shortwave optics
      <scheme>calc_snow_optics_sw</scheme>            Calculate graupel shortwave optics
      <scheme>rrtmg_state_tau_add</scheme>            Calculate and add various optical depths to the RRTMG state structure
      <scheme>radiation_output_cld</scheme>           Output optical depth diagnostics to history file
      <scheme>calc_ice_optics_lw</scheme>             Calculate cloud ice longwave optics (case structure, may need to be broken up)
      <scheme>calc_liq_optics_lw</scheme>             Calculate cloud liquid longwave optics (case structure, may need to be broken up)
      <scheme>calc_snow_optics_lw</scheme>            Calculate snow longwave optics
      <scheme>calc_snow_optics_lw</scheme>            Calculate graupel longwave optics
      <scheme>get_variability</scheme>                Calculate solar spectral irradiance scaling factors
      ++++++++++++++++++++++++++++++++++ -->
      <scheme>rrtmg_state_prepare</scheme>            <!-- Prepare inputs for the "RRTMG" radiation scheme -->
      <subcycle loop="rad_active_cnst">               <!-- Loop over radiatively active constituents, CAM6 var = 'n_diag'  -->
        <scheme>rrtmg_state_update</scheme>           <!-- Add shortwave constiuent concentrations to RRTMG state structure -->
        <scheme>aer_rad_props_sw</scheme>             <!-- Gather/calculate aerosol shortwave optical properties (potentially provided by registry/framework?) -->
        <scheme>rad_rrtmg_sw</scheme>                 <!-- Actual RRTMG shortwave radiation parameterization -->
        <scheme>rad_sw_diag_output</scheme>           <!-- Calculate shortwave diagnostic variables, and output them to history file -->
      </subcycle>
      <scheme>rad_cnst_out</scheme>                   <!-- Calculate radiatively active constituent diagnostic variables, and output them to history file -->
      <subcycle loop="rad_active_cnst">               <!-- Loop over radiatively active constituents, CAM6 var = 'n_diag'  -->
        <scheme>rrtmg_state_update</scheme>           <!-- Add longwave constiuent concentrations to RRTMG state structure -->
        <scheme>aer_rad_props_lw</scheme>             <!-- Gather/calculate aerosol longwave optical properties (potentially provided by registry/framework?) -->
        <scheme>rad_rrtmg_lw</scheme>                 <!-- Actual RRTMG longwave radiation parameterization -->
        <scheme>rad_lw_diag_output</scheme>           <!-- Calculate longwave diagnostic variables, and output them to history file -->
      </subcycle>
      <scheme>cosp_input_prepare</scheme>             <!-- Prepare inputs required for COSP.  Only matters if COSP is active -->
      <scheme>cosp_simulator</scheme>                 <!-- Actual COSP simulator paramaterization.  Only matters if COSP is active -->
      <scheme>rad_qdp_q_calc</scheme>                 <!-- Convert Q*dp to Q (potentially managed by registry/framework?) -->
      <scheme>rad_data_write</scheme>                 <!-- Calculate additional radiation diagnostics, and output them to history file -->
      <scheme>radheat_tend</scheme>                   <!-- Calculate net radiative heating tendencies -->
      <scheme>radheat_diag_output</scheme>            <!-- Calculate radiative heating diagnostic variables, and output them to history file -->
      <scheme>rad_q_qdp_calc</scheme>                 <!-- Convert Q to Q*dp (potentially managed by registry/framework?) -->
      <scheme>set_srf_net_sw</scheme>                 <!-- Add net shortwave surface flux to host model surface fluxes -->
      <!-- **************************** -->
      <scheme>check_energy_chng</scheme>              <!-- Global integral checker required for certain diagnostic outputs -->
      <scheme>tropopause_output</scheme>              <!-- Calculate tropopause diagnostic variables, and output them to history file -->
      <scheme>cam_export</scheme>                     <!-- Add various physics state variables to host model surface fluxes -->
      <scheme>diag_export</scheme>                    <!-- Output various host model surface fluxes to history file -->
    </time_split>
  </group>
  <group name="physics_ac">
    <time_split>
      <!--cam6:  diffusion=CLUBB, chem=trop_mam4 -->
      <scheme>flux_avg_run</scheme>                   <!-- Smooth/average surface fluxes, but only if phys_do_flux_avg is True -->
      <scheme>physics_state_check</scheme>            <!-- Only if state_debug_checks is True. This scheme only looks for infs/nans, and kills the model if found -->
      <scheme>calc_flx_net</scheme>                   <!-- Accumulate net surface fluxes, which is necessary for spectral dycores -->
      <!-- Chemistry emissisons -->
      <!-- **************************** -->
      <scheme>aero_model_emissions</scheme>           <!-- Calculate aerosol emissions, and add them to the host model's surface inputs -->
      <scheme>calc_MEGAN_fluxes</scheme>              <!-- Calculate MEGAN fluxes, and add them to the host model's surface inputs and history files -->
      <scheme>set_srf_emissions</scheme>              <!-- Calculate surface chemistry emissions -->
      <scheme>srf_emis_diag_output</scheme>           <!-- Add surface chemistry emissions to host model's surface inputs and history files -->
      <scheme>fire_emissions_srf</scheme>             <!-- Calculate fire emissions, and add to host model's surface inputs -->
      <!-- **************************** -->
      <!-- Negative moisture/tracer check -->
      <!-- **************************** -->
      <scheme>qneg_surface</scheme>                   <!-- Modify surface moisture and heat fluxes to prevent negative moisture values, and output diagnostics - qneg4 in CAM6 -->
      <!-- **************************** -->
      <scheme>aoa_tracers_timestep_tend</scheme>      <!-- Calculate age of air tracer tendencies.  Also output tendencies to history file -->
      <scheme>check_tracers_chng</scheme>             <!-- Global tracer mass checker that kills model if error is large enough. -->
      <scheme>co2_cycle_set_ptend</scheme>            <!-- Calculate CO2 tendencies.  Only matters if co2_flag or co2_readFlux_aircraft is True -->
      <!-- Atmospheric Chemistry (MOZART), only matters if chem_is_active is True -->
      <!-- **************************** -->
      <scheme>short_lived_species_writeic</scheme>    <!-- Write initial values for short-lived chemical species to history file, if requested by user -->
      <scheme>get_curr_calday</scheme>                <!-- Determine day of year -->
      <scheme>chem_tropopause_find</scheme>           <!-- Determine tropopause height (specific tropopause calculation depends on chem_use_chemtrop) -->
      <scheme>neu_wetdep_tend</scheme>                <!-- Calculate wet deposition rates via the "Neu" scheme -->
      <scheme>chem_calc_cldw</scheme>                 <!-- Calculate total cloud water mass and droplet number -->
      <scheme>gas_phase_chemdr</scheme>               <!-- Calculate gas-phase chemical reaction tendencies -->
      <scheme>nitro_srf_flx</scheme>                  <!-- Add nitrogen surface fluxes to host model surface fluxes (managed by registry/framework?) -->
      <scheme>chem_diag_output</scheme>               <!-- Calculate chemistry diagnostic variables, and output them to history file -->
      <!-- **************************** -->
      <scheme>check_energy_chng</scheme>              <!-- Global integral checker required for certain diagnostic outputs -->
      <scheme>check_tracers_chng</scheme>             <!-- Global tracer mass checker that kills model if error is large enough. -->
      <!-- Vertical diffusion -->
      <!-- **************************** -->
      <scheme>set_dry_to_wet</scheme>                 <!-- Convert mixing ratios from dry air to air + water vapor -->
      <scheme>tint_calc</scheme>                      <!-- Interpolate air temperature to layer interface levels -->
      <scheme>ubc_get_vals</scheme>                   <!-- Calcuate upper-level boundary conditions (depends on chemistry and model-top choice) -->
      <scheme>set_top_tint_val</scheme>               <!-- Calculate air temperature at top interface level -->
      <scheme>rhoi_calc</scheme>                      <!-- Interpolate air density and dry air density to layer interface levels -->
      <scheme>compute_tms</scheme>                    <!-- Calculate Turbulent Mountain Stress (TMS) tendency -->
      <scheme>tms_diag_output</scheme>                <!-- Calculate TMS diangostic variables, and output them to history file -->
      <scheme>compute_blj</scheme>                    <!-- Calculate Sub-Grid Orgraphic (SGO) drag via Beljaars parameterization -->
      <scheme>blj_diag_output</scheme>                <!-- Calculate SGO diagnostic variables, and output them to history file -->
      <scheme>theta_calc</scheme>                     <!-- Calculate potential temperature (managed by registry/framework?) -->
      <scheme>virtem</scheme>                         <!-- Calculate virtual temperature (managed by registry/framework?) -->
      <scheme>calc_ustar</scheme>                     <!-- Calculate friction velocity -->
      <scheme>calc_obklen</scheme>                    <!-- Calculate Obhukov length -->
      <scheme>pbl_diag_calc</scheme>                  <!-- Calculate PBL diagnositc variables, if do_pbl_diags is False -->
      <scheme>dse_top_calc</scheme>                   <!-- Calculate top-level dry static energy, but only if do_molec_diff is True and WACCM-X is False -->
      <scheme>compute_molec_diff_wet</scheme>         <!-- Calculate molecular diffusion of wet atmospheric constituents, if do_molec_diff is True -->
      <scheme>compute_vdiff_wet</scheme>              <!-- Calculate the vertical (eddy) diffusion of wet atmospheric constituents -->
      <scheme>compute_molec_diff_dry</scheme>         <!-- Calculate molecular diffusion of dry atmospheric constituents, if do_molec_diff is True -->
      <scheme>compute_vdiff_dry</scheme>              <!-- Calculate the vertical (eddy) diffusion of dry atmospheric constituents -->
      <scheme>aero_srf_flx_add</scheme>               <!-- Add surface aerosol fluxes to bottom model layer, but only if prog_modal_aero is True -->
      <scheme>diff_flux_diag</scheme>                 <!-- Calculate diffusion variable diagnostics, if do_pbl_diags is False (is that correct?) -->
      <scheme>diff_flux_tend_dry</scheme>             <!-- Calculate vertical diffusion tendencies for "dry" quantities, and send them back to host model -->
      <scheme>set_wet_to_dry</scheme>                 <!-- Convert mixing ratios from air + water vapor to dry air -->
      <scheme>pbl_diag_calc</scheme>                  <!-- Calculate PBL diagnositc variables, if do_pbl_diags is False -->
      <scheme>diff_mass_check</scheme>                <!-- Check mass conservation after vertical diffusion, and send error messages if check fails -->
      <scheme>pbl_output</scheme>                     <!-- Write PBL diagnostic variables to history files -->
      <!-- **************************** -->
      <scheme>rayleigh_friction_tend</scheme>         <!-- Calculate Rayleigh friction tendency -->
      <scheme>check_energy_chng</scheme>              <!-- Global integral checker required for certain diagnostic outputs -->
      <scheme>check_tracers_chng</scheme>             <!-- Global tracer mass checker that kills model if error is large enough. -->
      <!-- Aerosol dry deposition -->
      <!-- **************************** -->
      <scheme>calcram</scheme>                        <!-- Calculate aerodynamic resistance and friction velocity -->
      <scheme>calcram_diag_output</scheme>            <!-- Write aerodynamic resistance and friction velocity to history file -->
      <scheme>calc_atm_density</scheme>               <!-- Calculate atmospheric density -->
      <subcycle loop="dep_velocity_idx_34">           <!-- loop over deposition velocity (vlc) array index values 3 and 4 -->
        <scheme>modal_aero_depvel_part</scheme>       <!-- Calculate dry deposition velocity for cloud droplets -->
      </subcycle>
      <subcycle loop="aerosol_dist_modes">            <!-- Loop over aerosol size distribution modes, CAM6 var = 'ntot_amode' -->
        <subcycle loop="aerosol_phase">               <!-- Loop over aerosol phase types (interstitial vs cloud-borne), CAM6 var = 'lphase' -->
          <scheme>calc_aero_vars</scheme>             <!-- Calculate aerosol mean wet radius and other properties -->
          <subcycle loop="dep_velocity_idx_12" >      <!-- loop over deposition velocity (vlc) array index values 1 and 2 -->
            <scheme>modal_aero_depvel_part</scheme>   <!-- Calculate dry deposition velocity for interstial aerosols -->
          </subcycle>
          <scheme>aero_tracer_indx</scheme>           <!-- Determine aerosol tracer index (managed by registry/framework?) -->
          <scheme>depvel_m_to_pa</scheme>             <!-- Convert the deposition velocity from m/s to Pa/s, and write to history file (maanged by registry/framework?) -->
          <scheme>dust_sediment_tend</scheme>         <!-- Calculate host model tendencies and surface fluxes from dry deposition -->
          <scheme>drydep_diag_output</scheme>         <!-- Calculate dry deposition diagnostic variables, and output them to history file -->
        </subcycle>
      </subcycle>
      <scheme>set_srf_drydep</scheme>                 <!-- Add dry deposition surface fluxes to host model, if aerodep_flx_prescribed is False -->
      <!-- **************************** -->
      <scheme>charge_balance</scheme>                 <!-- Enforce charge nuetrality, if chemistry simulates electrons -->
      <!-- Gravit wave tendencies -->
      <!-- **************************** -->
      <!-- This interface depends heavily
           on namelist inputs, with entire
           blocks of code being used (or not)
           depending on said namelist choices.
           However, the general structure of these
           code blocks is more or less the same,
           so a "generic" scheme set is included
           here, which will need to be expanded
           out once "if-statement" like dependencies
           can be added to suite definition files
           like this one -->
      <scheme>set_dry_to_wet</scheme>                  <!-- Convert mixing ratios from dry air to air + water vapor -->
      <scheme>gw_prof</scheme>                         <!-- Calculate layer interface densities and Brunt-Viasala frequencies (combine with other schemes?) -->
      <!-- Generic gravity wave scheme order  -->
      <!-- +++++++++++++++++++++++++ -->
      <scheme>effgw_calc</scheme>                      <!-- Calculate the efficiency of gravity wave momentum transfer -->
      <scheme>gw_src_calc</scheme>                     <!-- Determine gravity wave sources -->
      <scheme>gw_drag_prof</scheme>                    <!-- Solve for the drag profile with the gravity wave spectrum -->
      <scheme>calc_taucd</scheme>                      <!-- Project stress into directional components -->
      <scheme>egwdffi_tot_calc</scheme>                <!-- add diffusion coefficients (manageable by registry/framework?) -->
      <scheme>momentum_flux_calc</scheme>              <!-- Calculate momentum fluxes/wind tendencies -->
      <scheme>energy_change</scheme>                   <!-- Calculate atmospheric energy change -->
      <scheme>energy_fixer</scheme>                    <!-- Ensure energy conservation -->
      <scheme>gw_cam_update</scheme>                   <!-- Placeholder for CAM gravity wave updates and diagnostic output calculations -->
      <!-- +++++++++++++++++++++++++ -->
      <!-- **************************** -->
      <scheme>check_energy_chng</scheme>               <!-- Global integral checker required for certain diagnostic outputs -->
      <scheme>lunar_tides_tend</scheme>                <!-- Calculate horizontal wind tendencies due to M2 lunar tide, but only if apply_lunar_tides is True -->
      <scheme>check_energy_chng</scheme>               <!-- Global integral checker required for certain diagnostic outputs -->
      <scheme>calc_te_and_aam_budgets</scheme>         <!-- Managed by host model? Diagnostic output suffix = 'pAP' -->
      <scheme>nudging_timestep_tend</scheme>           <!-- Apply nudging to horizontal winds, heat, and water vapor, and output diagnostics, but only if nudging is turned on. -->
      <scheme>check_energy_chng</scheme>               <!-- Global integral checker required for certain diagnostic outputs -->
      <scheme>set_dry_to_wet</scheme>                  <!-- Only matters if dycore is FV (LR) or SE -->
      <!-- Dry air mass adjuster -->                   <!-- Only matters if dycore is FV (LR), otherwise this calculation is purely diagnostic -->
      <!-- **************************** -->
      <scheme>qfac_state_adjust</scheme>               <!-- Adjust state variables based off the change in water vapor -->
      <scheme>geopotential_dse</scheme>                <!-- Calculate the temperatue and geopotential height using pressure and dry static energy -->
      <!-- **************************** -->
      <scheme>calc_te_and_aam_budgets</scheme>         <!-- Managed by host model? Diagnostic output suffix = 'pAM' -->
      <scheme>dtcore_reset</scheme>                    <!-- Reset "dtcore" variable to equal temperature -->
      <scheme>diag_phys_tend_writeout</scheme>         <!-- Calculate physics diagnostic variables, and output them to history file -->
      <scheme>clybry_fam_set</scheme>                  <!-- Set ClOy and BrOy mass mixig ratios. Only matters if chemistry package with Cly and Bry is used -->
    </time_split>
  </group>
</suite>