Skip to content

noresm3_0_023_cam6_4_121: CAM7 physics now uses new CMIP7 nitrogen deposition #252

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Merged
gold2718 merged 2 commits into from
Jan 5, 2026
Merged

noresm3_0_023_cam6_4_121: CAM7 physics now uses new CMIP7 nitrogen deposition #252

Show file tree
Hide file tree
Changes from all commits
Commits
Show all changes
2 commits
Select commit Hold shift + click to select a range
6a19021
cam7 physics now uses new cmip7 nitrogen deposition
mvertens Dec 31, 2025
2c0b45d
addressed issues raised in PR review
mvertens Jan 3, 2026
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
1 change: 1 addition & 0 deletions bld/build-namelist
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -706,6 +706,7 @@ if (!($simple_phys or $aqua_mode)) {
add_default($nl, 'stream_ndep_year_first' , 'sim_year'=>$sim_year);
add_default($nl, 'stream_ndep_year_last' , 'sim_year'=>$sim_year);
add_default($nl, 'stream_ndep_year_align' , 'sim_year'=>$sim_year);
add_default($nl, 'stream_ndep_varlist');
}
}

Expand Down
12 changes: 8 additions & 4 deletions bld/namelist_files/namelist_defaults_cam.xml
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -2014,12 +2014,16 @@
<soil_erod_file phys="cam4" >atm/cam/dst/dst_source2x2tuned-cam4-06132012.nc</soil_erod_file>
<soil_erod_file phys="cam4" hgrid="0.9x1.25">atm/cam/dst/dst_source1x1tuned-cam4-06202012.nc</soil_erod_file>

<!-- nitrogen deposition to surface models -->
<!-- nitrogen deposition to surface components -->
<stream_ndep_varlist>NDEP_NHx_month:NDEP_NOy_month</stream_ndep_varlist>
<stream_ndep_varlist phys="cam7">drynhx:wetnhx:drynoy:wetnoy</stream_ndep_varlist>

<stream_ndep_mesh_filename>share/meshes/fv0.9x1.25_141008_polemod_ESMFmesh.nc</stream_ndep_mesh_filename>
<stream_ndep_data_filename>lnd/clm2/ndepdata/fndep_clm_hist_b.e21.BWHIST.f09_g17.CMIP6-historical-WACCM.ensmean_1849-2015_monthly_0.9x1.25_c180926.nc</stream_ndep_data_filename>
<stream_ndep_mesh_filename phys="cam7">atm/ndep/cmip7/ndep_input4MIPs_surfaceFluxes_ESMFmesh_cdf5_c20251211.nc</stream_ndep_mesh_filename>

<stream_ndep_mesh_filename sim_year="1850">share/meshes/fv0.9x1.25_141008_polemod_ESMFmesh.nc</stream_ndep_mesh_filename>
<stream_ndep_data_filename sim_year="1850">lnd/clm2/ndepdata/fndep_clm_WACCM6_CMIP6piControl001_y21-50avg_1850monthly_0.95x1.25_c180802.nc</stream_ndep_data_filename>
<stream_ndep_data_filename>lnd/clm2/ndepdata/fndep_clm_hist_b.e21.BWHIST.f09_g17.CMIP6-historical-WACCM.ensmean_1849-2015_monthly_0.9x1.25_c180926.nc</stream_ndep_data_filename>
<stream_ndep_data_filename phys="cam7">atm/ndep/cmip7/ndep_input4MIPs_surfaceFluxes_CMIP_FZJ-CMIP-nitrogen-1-2_gn_185001-202212_c20251222.nc</stream_ndep_data_filename>
<stream_ndep_data_filename sim_year="1850">lnd/clm2/ndepdata/fndep_clm_WACCM6_CMIP6piControl001_y21-50avg_1850monthly_0.95x1.25_c180802.nc</stream_ndep_data_filename><stream_ndep_data_filename phys="cam7" sim_year="1850">atm/ndep/cmip7/ndep_input4MIPs_surfaceFluxes_CMIP_FZJ-CMIP-nitrogen-1-2_gn_185001-185012-clim_c20251222.nc</stream_ndep_data_filename>

<stream_ndep_year_first >2000</stream_ndep_year_first>
<stream_ndep_year_first sim_year="1850">1850</stream_ndep_year_first>
Expand Down
5 changes: 5 additions & 0 deletions bld/namelist_files/namelist_definition.xml
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -8233,6 +8233,11 @@ Nitrogen deposition stream data filename.
Grid mesh file corresponding to sream_ndep_data_filename.
</entry>

<entry id="stream_ndep_varlist" type="char*256" category="Nitrogen Deposition"
group="ndep_stream_nl" valid_values="" >
Colon delimited string of variable names on nitrogen deposition stream file(s).
</entry>

<entry id="megan_factors_file" type="char*256" input_pathname="abs" category="VOC_emissions"
group="megan_emis_nl" valid_values="" >
File containing MEGAN emissions factors.
Expand Down
14 changes: 6 additions & 8 deletions src/cpl/nuopc/atm_import_export.F90
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -1244,22 +1244,20 @@ subroutine export_fields(gcomp, cam_out, rc)

! The ndep_stream_nl namelist group is read in stream_ndep_init. This sets whether
! or not the stream will be used.
if (.not. stream_ndep_is_initialized) then
call stream_ndep_init(rc)
if (ChkErr(rc,__LINE__,u_FILE_u)) return
stream_ndep_is_initialized = .true.
if (ndep_stream_active) then
if (.not. stream_ndep_is_initialized) then
call stream_ndep_init(rc)
if (ChkErr(rc,__LINE__,u_FILE_u)) return
end if
end if

if (ndep_stream_active.or.chem_has_ndep_flx) then
if (ndep_stream_active .or. chem_has_ndep_flx) then

! Nitrogen dep fluxes are obtained from the ndep input stream if input data is available
! otherwise computed by chemistry
if (ndep_stream_active) then

! get ndep fluxes from the stream
call stream_ndep_interp(cam_out, rc)
if (ChkErr(rc,__LINE__,u_FILE_u)) return

end if

g = 1
Expand Down
Loading