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MCSP (multiscale coherent structure parameterization) #1632

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MCSP (multiscale coherent structure parameterization) #1632

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d7c57b7
MCSP added
chihchen24 Jul 23, 2026
36a6608
Update atmos_phys for MCSP
chihchen24 Jul 23, 2026
6542168
MCSP mods added
chihchen24 Jul 23, 2026
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11 changes: 11 additions & 0 deletions bld/build-namelist
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Original file line number Diff line number Diff line change
Expand Up @@ -3815,6 +3815,17 @@ if (!$simple_phys) {
add_default($nl, 'zmconv_parcel_hscale');
}

# MCSP
if (!$simple_phys) {
add_default($nl, 'MCSP_heat_coeff');
add_default($nl, 'MCSP_moisture_coeff');
add_default($nl, 'MCSP_uwind_coeff');
add_default($nl, 'MCSP_vwind_coeff');
add_default($nl, 'MCSP_storm_speed_pref');
add_default($nl, 'MCSP_conv_depth_min');
add_default($nl, 'mcsp_shear_min');
}

# moist convection rainwater coefficients
my $shallow_scheme = $nl->get_value('shallow_scheme');
$shallow_scheme =~ s/['"]//g; # strip quotes "'
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9 changes: 9 additions & 0 deletions bld/namelist_files/namelist_defaults_cam.xml
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Expand Up @@ -2925,6 +2925,15 @@
<zmconv_parcel_pbl > .false. </zmconv_parcel_pbl>
<zmconv_parcel_hscale > 0.5 </zmconv_parcel_hscale>

<!-- MCSP scheme -->
<MCSP_heat_coeff > 0.0D0 </MCSP_heat_coeff >
<MCSP_moisture_coeff > 0.0D0 </MCSP_moisture_coeff >
<MCSP_uwind_coeff > 0.0D0 </MCSP_uwind_coeff >
<MCSP_vwind_coeff > 0.0D0 </MCSP_vwind_coeff >
<MCSP_storm_speed_pref >60000.0 </MCSP_storm_speed_pref>
<MCSP_conv_depth_min >50000.0 </MCSP_conv_depth_min>
<mcsp_shear_min > 3.0 </mcsp_shear_min>

<!-- Cloud sedimentation -->

<cldsed_ice_stokes_fac > 1.0D0 </cldsed_ice_stokes_fac>
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45 changes: 45 additions & 0 deletions bld/namelist_files/namelist_definition.xml
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Expand Up @@ -3401,6 +3401,51 @@ Convective adjustment timescale in units of (s)
Default: 3600.0 s
</entry>

<!-- MCSP nl -->

<entry id="MCSP_heat_coeff" type="real" category="conv"
group="mcsp_nl" valid_values="" >
MCSP heating coefficient controlling the tendency intensity added.
Default: 0.0
</entry>

<entry id="MCSP_moisture_coeff" type="real" category="conv"
group="mcsp_nl" valid_values="" >
MCSP moistening coefficient controlling the tendency intensity added.
Default: 0.0
</entry>

<entry id="MCSP_uwind_coeff" type="real" category="conv"
group="mcsp_nl" valid_values="" >
MCSP uwnd tendency coefficient controlling the tendency intensity added.
Default: 0.0
</entry>

<entry id="MCSP_vwind_coeff" type="real" category="conv"
group="mcsp_nl" valid_values="" >
MCSP vwnd tendency coefficient controlling the tendency intensity added.
Default: 0.0
</entry>

<entry id="MCSP_storm_speed_pref" type="real" category="conv"
group="mcsp_nl" valid_values="" >
Reference pressure level in Pa for low-level zonal wind shear calculation for MCSP.
Default: 60000.0
</entry>

<entry id="MCSP_conv_depth_min" type="real" category="conv"
group="mcsp_nl" valid_values="" >
Minimum convection depth for MCSP to be activated in Pa.
Default: 50000.0
</entry>

<entry id="mcsp_shear_min" type="real" category="conv"
group="mcsp_nl" valid_values="" >
Minimum uwind difference/shear between reference pressure level and surface for MCSP to be activated.
Default: 3.0
</entry>


<!-- Cloud sedimentation -->

<entry id="cldsed_ice_stokes_fac" type="real" category="cldsed"
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2 changes: 1 addition & 1 deletion src/atmos_phys
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Submodule atmos_phys updated 7 files
+344 −0 schemes/mcsp/MCSP.F90
+293 −0 schemes/mcsp/MCSP.meta
+42 −0 schemes/mcsp/mcsp_options.F90
+64 −0 schemes/mcsp/mcsp_options.meta
+101 −0 schemes/mcsp/mcsp_options_namelist.xml
+70 −0 schemes/zhang_mcfarlane/save_qtend_from_convect_deep.F90
+77 −0 schemes/zhang_mcfarlane/save_qtend_from_convect_deep.meta
6 changes: 6 additions & 0 deletions src/control/runtime_opts.F90
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Expand Up @@ -50,6 +50,9 @@ subroutine read_namelist(nlfilename, single_column, scmlat, scmlon)
use cldfrc2m, only: cldfrc2m_readnl
use rk_stratiform_cam, only: rk_stratiform_cam_readnl
use zm_conv_intr, only: zm_conv_readnl
!++ MCSP
use mcsp_intr, only: mcsp_readnl
!-- MCSP
use hk_conv, only: hkconv_readnl
use uwshcu, only: uwshcu_readnl
use pkg_cld_sediment, only: cld_sediment_readnl
Expand Down Expand Up @@ -153,6 +156,9 @@ subroutine read_namelist(nlfilename, single_column, scmlat, scmlon)
call cldfrc_readnl(nlfilename)
call cldfrc2m_readnl(nlfilename)
call zm_conv_readnl(nlfilename)
!++ MCSP
call mcsp_readnl(nlfilename)
!-- MCSP
call rk_stratiform_cam_readnl(nlfilename)
call hkconv_readnl(nlfilename)
call uwshcu_readnl(nlfilename)
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