diff --git a/cime/scripts/Tools/config_compsets.xml b/cime/scripts/Tools/config_compsets.xml
index 615c3caf0ff3..eb0a566cc8e8 100644
--- a/cime/scripts/Tools/config_compsets.xml
+++ b/cime/scripts/Tools/config_compsets.xml
@@ -230,23 +230,24 @@ value of RUN_STARTDATE will be date2.
 <COMPSET sname="F_2000_CAM5_RESUS"          alias="FC5RESUS"        >2000_CAM5%MAM4%RESUS_CLM40%SP_CICE%PRES_DOCN%DOM_RTM_SGLC_SWAV</COMPSET>
 <COMPSET sname="F_2000_CAM5_ATMMOD"         alias="FC5ATMMOD"       >2000_CAM5%ATMMOD_CLM45%SPBC_CICE%PRES_DOCN%DOM_RTM_SGLC_SWAV</COMPSET>
 <COMPSET sname="F_2000_CAM5_AV1C"           alias="FC5AV1C"         >2000_CAM5%AV1C_CLM45%SPBC_CICE%PRES_DOCN%DOM_RTM_SGLC_SWAV</COMPSET>
-<COMPSET sname="F_2000_CAM5_AV1C-00"       alias="FC5AV1C-00"     >2000_CAM5%AV1C-00_CLM45%SPBC_CICE%PRES_DOCN%DOM_RTM_SGLC_SWAV</COMPSET>
-<COMPSET sname="F_1850_CAM5_AV1C-01"       alias="F1850C5AV1C-01" >1850_CAM5%AV1C-01_CLM45%SPBC_CICE%PRES_DOCN%DOM_RTM_SGLC_SWAV</COMPSET>
-<COMPSET sname="F_1850_CAM5_AV1C-02"       alias="F1850C5AV1C-02" >1850_CAM5%AV1C-02_CLM45%SPBC_CICE%PRES_DOCN%DOM_RTM_SGLC_SWAV</COMPSET>
-<COMPSET sname="F_1850_CAM5_AV1C-03"       alias="F1850C5AV1C-03" >1850_CAM5%AV1C-03_CLM45%SPBC_CICE%PRES_DOCN%DOM_RTM_SGLC_SWAV</COMPSET>
-<COMPSET sname="F_1850_CAM5_AV1C-L"        alias="F1850C5AV1C-L"  >1850_CAM5%AV1C-L_CLM45%SPBC_CICE%PRES_DOCN%DOM_RTM_SGLC_SWAV</COMPSET>
-<COMPSET sname="F_2000_CAM5_AV1C-01"       alias="FC5AV1C-01"     >2000_CAM5%AV1C-01_CLM45%SPBC_CICE%PRES_DOCN%DOM_RTM_SGLC_SWAV</COMPSET>
-<COMPSET sname="F_2000_CAM5_AV1C-02"       alias="FC5AV1C-02"     >2000_CAM5%AV1C-02_CLM45%SPBC_CICE%PRES_DOCN%DOM_RTM_SGLC_SWAV</COMPSET>
-<COMPSET sname="F_2000_CAM5_AV1C-L"        alias="FC5AV1C-L"     >2000_CAM5%AV1C-L_CLM45%SPBC_CICE%PRES_DOCN%DOM_RTM_SGLC_SWAV</COMPSET>
+<COMPSET sname="F_2000_CAM5_AV1C-00"        alias="FC5AV1C-00"      >2000_CAM5%AV1C-00_CLM45%SPBC_CICE%PRES_DOCN%DOM_RTM_SGLC_SWAV</COMPSET>
+<COMPSET sname="F_1850_CAM5_AV1C-01"        alias="F1850C5AV1C-01"  >1850_CAM5%AV1C-01_CLM45%SPBC_CICE%PRES_DOCN%DOM_RTM_SGLC_SWAV</COMPSET>
+<COMPSET sname="F_1850_CAM5_AV1C-02"        alias="F1850C5AV1C-02"  >1850_CAM5%AV1C-02_CLM45%SPBC_CICE%PRES_DOCN%DOM_RTM_SGLC_SWAV</COMPSET>
+<COMPSET sname="F_1850_CAM5_AV1C-03"        alias="F1850C5AV1C-03"  >1850_CAM5%AV1C-03_CLM45%SPBC_CICE%PRES_DOCN%DOM_RTM_SGLC_SWAV</COMPSET>
+<COMPSET sname="F_1850_CAM5_AV1C-L"         alias="F1850C5AV1C-L"   >1850_CAM5%AV1C-L_CLM45%SPBC_CICE%PRES_DOCN%DOM_RTM_SGLC_SWAV</COMPSET>
+<COMPSET sname="F_2000_CAM5_AV1C-01"        alias="FC5AV1C-01"      >2000_CAM5%AV1C-01_CLM45%SPBC_CICE%PRES_DOCN%DOM_RTM_SGLC_SWAV</COMPSET>
+<COMPSET sname="F_2000_CAM5_AV1C-02"        alias="FC5AV1C-02"      >2000_CAM5%AV1C-02_CLM45%SPBC_CICE%PRES_DOCN%DOM_RTM_SGLC_SWAV</COMPSET>
+<COMPSET sname="F_2000_CAM5_AV1C-03"        alias="FC5AV1C-03"      >2000_CAM5%AV1C-03_CLM45%SPBC_CICE%PRES_DOCN%DOM_RTM_SGLC_SWAV</COMPSET>
+<COMPSET sname="F_2000_CAM5_AV1C-L"         alias="FC5AV1C-L"       >2000_CAM5%AV1C-L_CLM45%SPBC_CICE%PRES_DOCN%DOM_RTM_SGLC_SWAV</COMPSET>
 <COMPSET sname="F_2000_CAM5_AV1F"           alias="FC5AV1F"         >2000_CAM5%AV1F_CLM45%SPBC_CICE%PRES_DOCN%DOM_RTM_SGLC_SWAV</COMPSET>
-<COMPSET sname="F_2000_CAM5_AV1F-00"       alias="FC5AV1F-00"     >2000_CAM5%AV1F-00_CLM45%SPBC_CICE%PRES_DOCN%DOM_RTM_SGLC_SWAV</COMPSET>
-<COMPSET sname="F_2000_CAM5_AV1F-01"       alias="FC5AV1F-01"     >2000_CAM5%AV1F-01_CLM45%SPBC_CICE%PRES_DOCN%DOM_RTM_SGLC_SWAV</COMPSET>
+<COMPSET sname="F_2000_CAM5_AV1F-00"        alias="FC5AV1F-00"      >2000_CAM5%AV1F-00_CLM45%SPBC_CICE%PRES_DOCN%DOM_RTM_SGLC_SWAV</COMPSET>
+<COMPSET sname="F_2000_CAM5_AV1F-01"        alias="FC5AV1F-01"      >2000_CAM5%AV1F-01_CLM45%SPBC_CICE%PRES_DOCN%DOM_RTM_SGLC_SWAV</COMPSET>
 <COMPSET sname="F_2000_CAM5_ATMMODCOSP"     alias="FC5ATMMODCOSP"   >2000_CAM5%ATMMODCOSP_CLM45%SPBC_CICE%PRES_DOCN%DOM_RTM_SGLC_SWAV</COMPSET>
 <COMPSET sname="F_2000_CAM5_COSP"           alias="FC5COSP"         >2000_CAM5%COSP_CLM40%SP_CICE%PRES_DOCN%DOM_RTM_SGLC_SWAV</COMPSET>
-<COMPSET sname="F_2000_C5UNI"         alias="FC5UNI"     >2000_CAM5%UNI_CLM40%SP_CICE%PRES_DOCN%DOM_RTM_SGLC_SWAV</COMPSET>
+<COMPSET sname="F_2000_C5UNI"               alias="FC5UNI"          >2000_CAM5%UNI_CLM40%SP_CICE%PRES_DOCN%DOM_RTM_SGLC_SWAV</COMPSET>
 <COMPSET sname="F_AMIP"                     alias="FAMIP"           >AMIP_CAM4_CLM40%SP_CICE%PRES_DOCN%DOM_RTM_SGLC_SWAV</COMPSET>
 <COMPSET sname="F_AMIP_CAM5"                alias="FAMIPC5"         >AMIP_CAM5_CLM40%SP_CICE%PRES_DOCN%DOM_RTM_SGLC_SWAV</COMPSET>
-<COMPSET sname="F_AMIP_C5UNI"         alias="FAMIPC5UNI" >AMIP_CAM5%UNI_CLM40%SP_CICE%PRES_DOCN%DOM_RTM_SGLC_SWAV</COMPSET>
+<COMPSET sname="F_AMIP_C5UNI"               alias="FAMIPC5UNI"      >AMIP_CAM5%UNI_CLM40%SP_CICE%PRES_DOCN%DOM_RTM_SGLC_SWAV</COMPSET>
 <COMPSET sname="F_AMIP_CAM5_L60"            alias="FAMIPC5L60"      >AMIP_CAM5%L60_CLM40%SP_CICE%PRES_DOCN%DOM_RTM_SGLC_SWAV</COMPSET>
 <COMPSET sname="F_1850-PDAY_CAM5"           alias="F1850PDC5"       >PIPD_CAM5_CLM40%SP_CICE%PRES_DOCN%DOM_RTM_SGLC_SWAV</COMPSET>
 <COMPSET sname="F_1850-PDAY_CAM5_CLM45BGC"  alias="F1850PDC5L45BGC" >20TR_CAM5_CLM45%BGC_CICE%PRES_DOCN%DOM_RTM_SGLC_SWAV</COMPSET>
@@ -785,8 +786,9 @@ GEOS => GEOS5 meteorology for "stand-alone" CAM
 <CAM_NML_USE_CASE compset="1850_CAM5.*AV1C-L" >1850_cam5_av1c-02</CAM_NML_USE_CASE>
 <CAM_NML_USE_CASE compset="2000_CAM5.*AV1C-01">2000_cam5_av1c-01</CAM_NML_USE_CASE>
 <CAM_NML_USE_CASE compset="2000_CAM5.*AV1C-02">2000_cam5_av1c-02</CAM_NML_USE_CASE>
-<CAM_NML_USE_CASE compset="2000_CAM5.*AV1C-L">2000_cam5_av1c-02</CAM_NML_USE_CASE>
-<CAM_NML_USE_CASE compset="2000_CAM5.*AV1F"  >2000_cam5_av1f</CAM_NML_USE_CASE>
+<CAM_NML_USE_CASE compset="2000_CAM5.*AV1C-03">2000_cam5_av1c-03</CAM_NML_USE_CASE>
+<CAM_NML_USE_CASE compset="2000_CAM5.*AV1C-L" >2000_cam5_av1c-02</CAM_NML_USE_CASE>
+<CAM_NML_USE_CASE compset="2000_CAM5.*AV1F"   >2000_cam5_av1f</CAM_NML_USE_CASE>
 <CAM_NML_USE_CASE compset="2000_CAM5.*AV1F-00">2000_cam5_av1f-00</CAM_NML_USE_CASE>
 <CAM_NML_USE_CASE compset="2000_CAM5.*AV1F-01">2000_cam5_av1f-01</CAM_NML_USE_CASE>
 <CAM_NML_USE_CASE compset="2000_CAM5%COSP"   >2000_cam5_cosp</CAM_NML_USE_CASE>
@@ -1917,7 +1919,6 @@ DOCN%COPY => docn copy mode
 
 <CCSM_CO2_PPMV compset=".+"              >379.000</CCSM_CO2_PPMV>
 <CCSM_CO2_PPMV compset="^1850"           >284.7</CCSM_CO2_PPMV>
-<CCSM_CO2_PPMV compset="^1850.+AV1C"     >284.725</CCSM_CO2_PPMV>
 <CCSM_CO2_PPMV compset="^20TR.+BGC%BPRP" >284.7</CCSM_CO2_PPMV>
 <CCSM_CO2_PPMV compset="^20TR_CAM4%FCHM" >0.000001</CCSM_CO2_PPMV>
 <CCSM_CO2_PPMV compset="^PDAY_"          >368.9</CCSM_CO2_PPMV>
@@ -1945,6 +1946,8 @@ DOCN%COPY => docn copy mode
 <CCSM_CO2_PPMV compset="^AR95"           >368.9</CCSM_CO2_PPMV> 
 <CCSM_CO2_PPMV compset="^AR97"           >368.9</CCSM_CO2_PPMV>
 <CCSM_CO2_PPMV compset="^2003"           >367.0</CCSM_CO2_PPMV> 
+<CCSM_CO2_PPMV compset="^1850.+AV1C"     >284.725</CCSM_CO2_PPMV>
+<CCSM_CO2_PPMV compset="^2000.+AV1C-03"  >368.865</CCSM_CO2_PPMV>
 
 <!-- Override values based on CAM (WACCM) chemistry -->
 <CCSM_CO2_PPMV compset="CAM[45]%WCMX"       >0.000001</CCSM_CO2_PPMV>
diff --git a/components/cam/bld/namelist_files/use_cases/2000_cam5_av1c-03.xml b/components/cam/bld/namelist_files/use_cases/2000_cam5_av1c-03.xml
new file mode 100644
index 000000000000..2a7e068a2ad7
--- /dev/null
+++ b/components/cam/bld/namelist_files/use_cases/2000_cam5_av1c-03.xml
@@ -0,0 +1,106 @@
+<?xml version="1.0"?>
+
+<namelist_defaults>
+
+<!-- Solar constant from Lean (via Caspar Ammann): SOLAR_TSI_Lean_1610-2140_annual_c100301.nc -->
+<solar_data_file>atm/cam/solar/spectral_irradiance_Lean_1976-2007_ave_c20160517.nc</solar_data_file>
+<solar_data_ymd>20000101</solar_data_ymd>
+<solar_data_type>FIXED</solar_data_type>
+
+<!-- 2000 GHG values from AR5 (from ghg_hist_1765-2012_c130501.nc) -->
+<!-- <co2vmr>368.865e-6</co2vmr> Set by CCSM_CO2_PPMV in config_compset.xml -->
+<ch4vmr>1751.022e-9</ch4vmr>
+<n2ovmr>315.85e-9</n2ovmr>
+<f11vmr>676.0526e-12</f11vmr>
+<f12vmr>537.05e-12</f12vmr>
+
+<!-- Ice nucleation mods-->
+<use_hetfrz_classnuc>.true.</use_hetfrz_classnuc>
+<use_preexisting_ice>.false.</use_preexisting_ice>
+<hist_hetfrz_classnuc>.true.</hist_hetfrz_classnuc>
+<micro_mg_dcs_tdep>.true.</micro_mg_dcs_tdep>
+<microp_aero_wsub_scheme>1</microp_aero_wsub_scheme>
+
+<!-- For Polar mods-->
+<sscav_tuning>.false.</sscav_tuning>
+<convproc_do_aer>.true.</convproc_do_aer>
+<convproc_do_gas>.false.</convproc_do_gas>
+<convproc_method_activate>2</convproc_method_activate>
+<demott_ice_nuc>.true.</demott_ice_nuc>
+<liqcf_fix>.true.</liqcf_fix>
+<regen_fix>.true.</regen_fix>
+<resus_fix>.true.</resus_fix>
+<mam_amicphys_optaa>1</mam_amicphys_optaa>
+
+<fix_g1_err_ndrop>.true.</fix_g1_err_ndrop>
+<ssalt_tuning>.true.</ssalt_tuning>
+
+<!-- For comprehensive history -->
+<history_amwg>.true.</history_amwg>
+<history_aerosol>.true.</history_aerosol>
+<history_aero_optics>.true.</history_aero_optics>
+
+<!-- File for BC dep in snow feature -->
+<fsnowoptics>lnd/clm2/snicardata/snicar_optics_5bnd_mam_c140303.nc</fsnowoptics>
+
+<!-- Radiation bugfix -->
+<use_rad_dt_cosz>.true.</use_rad_dt_cosz>
+
+<!-- Tunable parameters for 72 layer model -->
+
+<ice_sed_ai>         500.0  </ice_sed_ai>
+<cldfrc_dp1>         0.045D0</cldfrc_dp1>
+<clubb_ice_deep>     16.e-6 </clubb_ice_deep>
+<clubb_ice_sh>       50.e-6 </clubb_ice_sh>
+<clubb_liq_deep>     8.e-6  </clubb_liq_deep>  
+<clubb_liq_sh>       10.e-6 </clubb_liq_sh>
+<clubb_C2rt>         1.75D0 </clubb_C2rt>
+<zmconv_c0_lnd>      0.007  </zmconv_c0_lnd>
+<zmconv_c0_ocn>      0.007  </zmconv_c0_ocn>
+<zmconv_dmpdz>      -0.75e-3</zmconv_dmpdz>
+<zmconv_ke>          0.5E-6 </zmconv_ke>
+<effgw_oro>          0.25   </effgw_oro>
+<seasalt_emis_scale> 1.05   </seasalt_emis_scale>
+<dust_emis_fact>     2.05D0 </dust_emis_fact>
+<clubb_gamma_coef>   0.29   </clubb_gamma_coef>
+<clubb_C8>           5.2    </clubb_C8>
+<cldfrc2m_rhmaxi>    1.05D0 </cldfrc2m_rhmaxi>
+<clubb_c_K10>        0.3    </clubb_c_K10>
+<effgw_beres>        0.4    </effgw_beres>
+<do_tms>             .false.</do_tms>
+<so4_sz_thresh_icenuc>0.1e-6</so4_sz_thresh_icenuc>
+<n_so4_monolayers_pcage>8.0D0 </n_so4_monolayers_pcage>
+<micro_mg_accre_enhan_fac>2.0D0</micro_mg_accre_enhan_fac>
+<zmconv_tiedke_add       >0.7D0</zmconv_tiedke_add>
+<zmconv_cape_cin         >1</zmconv_cape_cin>
+<zmconv_mx_bot_lyr_adj   >2</zmconv_mx_bot_lyr_adj>
+
+<!-- External forcing for BAM or MAM -->
+<soag_ext_file	 ver="mam" >atm/cam/chem/trop_mozart_aero/emis/aces4bgc_nvsoa_soag_elev_2000_c160427.nc</soag_ext_file>
+
+<!-- Surface emissions for MAM4 -->
+<dms_emis_file	      >atm/cam/chem/trop_mozart_aero/emis/DMSflux.2000.1deg_latlon_conserv.POPmonthlyClimFromACES4BGC_c20160226.nc</dms_emis_file>
+
+<!-- Marine organic aerosol namelist settings -->
+<mam_mom_mixing_state>3</mam_mom_mixing_state>
+<mam_mom_cycle_yr  >1                                                                                    </mam_mom_cycle_yr  >
+<mam_mom_datapath  >'atm/cam/chem/trop_mam/marine_BGC/'                                                  </mam_mom_datapath  >
+<mam_mom_datatype  >'CYCLICAL'										 </mam_mom_datatype  >
+<mam_mom_filename  >'monthly_macromolecules_0.1deg_bilinear_latlon_year01_merge_date.nc'                 </mam_mom_filename  > <!-- Using the 2000 file, for now -->
+<mam_mom_fixed_tod >0											 </mam_mom_fixed_tod >
+<mam_mom_fixed_ymd >0											 </mam_mom_fixed_ymd >
+<mam_mom_specifier >'chla:CHL1','mpoly:TRUEPOLYC','mprot:TRUEPROTC','mlip:TRUELIPC'			 </mam_mom_specifier >
+
+<!-- Stratospheric ozone (Linoz) -->
+<chlorine_loading_file      >atm/cam/chem/trop_mozart/ub/EESC_1850-2100_c090603.nc</chlorine_loading_file>
+<chlorine_loading_fixed_ymd >20000101</chlorine_loading_fixed_ymd>
+<chlorine_loading_type      >FIXED</chlorine_loading_type>
+<linoz_data_cycle_yr        >2000</linoz_data_cycle_yr>
+<linoz_data_file            >linoz1800-2100_2006jpl_climo_1.9x2.5_26L_extended.c160204.nc</linoz_data_file>
+<linoz_data_path            >atm/cam/chem/trop_mozart/ub</linoz_data_path>
+<linoz_data_type            >CYCLICAL</linoz_data_type>
+
+<!-- sim_year used for CLM datasets and SSTs forcings -->
+<sim_year>2000</sim_year>
+
+</namelist_defaults>