diff --git a/bld/namelist_files/namelist_defaults_cam.xml b/bld/namelist_files/namelist_defaults_cam.xml
index d0c27f677b..8ab86672a1 100644
--- a/bld/namelist_files/namelist_defaults_cam.xml
+++ b/bld/namelist_files/namelist_defaults_cam.xml
@@ -2529,6 +2529,7 @@
 <dust_emis_fact dyn="fv"                   phys="cam5"   clubb_sgs="1"    >0.22D0</dust_emis_fact>
 <dust_emis_fact dyn="se"                   phys="cam6"                    >0.70D0</dust_emis_fact>
 <dust_emis_fact dyn="se"                   phys="cam7"                    >2.30D0</dust_emis_fact>
+<dust_emis_fact dyn="mpas"                 phys="cam7"                    >2.30D0</dust_emis_fact>
 <dust_emis_fact dyn="se" hgrid="ne30np4"   phys="cam6"             chem="trop_strat_mam4_vbs">0.8D0</dust_emis_fact>
 <dust_emis_fact dyn="se" hgrid="ne30np4"   phys="cam7"             chem="trop_strat_mam4_vbs">0.8D0</dust_emis_fact>
 <dust_emis_fact dyn="se" hgrid="ne0np4CONUS.ne30x8" phys="cam6"    chem="trop_strat_mam4_vbs">0.8D0</dust_emis_fact>
@@ -2563,7 +2564,8 @@
 <dust_emis_fact hgrid="0.47x0.63" offline_dyn="1" phys="cam7"    ver="chem">0.9D0</dust_emis_fact>
 
 <!-- dust emissions method -->
-<dust_emis_method>Leung_2023</dust_emis_method>
+<dust_emis_method>              Zender_2003</dust_emis_method>
+<dust_emis_method phys="cam7" >  Leung_2023</dust_emis_method>
 <zender_soil_erod_source>atm</zender_soil_erod_source>
 
 <!-- seasalt emission tuning factor -->