diff --git a/Externals.cfg b/Externals.cfg
index a7c05ccdc6..ae434f268e 100644
--- a/Externals.cfg
+++ b/Externals.cfg
@@ -30,7 +30,7 @@ required = True
local_path = cime
protocol = git
repo_url = https://github.com/ESMCI/cime
-tag = cime5.6.14
+tag = branch_tags/cime5.6.15_a01
required = True
[externals_description]
diff --git a/bld/namelist_files/namelist_defaults_clm4_5.xml b/bld/namelist_files/namelist_defaults_clm4_5.xml
index 3b3855e51e..e9e222db82 100644
--- a/bld/namelist_files/namelist_defaults_clm4_5.xml
+++ b/bld/namelist_files/namelist_defaults_clm4_5.xml
@@ -1085,56 +1085,33 @@ lnd/clm2/surfdata_map/surfdata_conus_30_x8_hist_78pfts_CMIP6_simyr1850_c190128.n
lnd/clm2/ndepdata/fndep_clm_SSP585_b.e21.BWSSP585cmip6.f09_g17.CMIP6-SSP5-8.5-WACCM.001_2014-2101_monthly_0.9x1.25_c190211.nc
-
-lnd/clm2/ndepdata/fndep_clm_SSP585_b.e21.BWSSP585cmip6.f09_g17.CMIP6-SSP5-8.5-WACCM.001_2014-2101_monthly_0.9x1.25_c190211.nc
-lnd/clm2/ndepdata/fndep_clm_SSP126_b.e21.BWSSP126cmip6.f09_g17.CMIP6-SSP1-2.6-WACCM.001_2014-2101_monthly_0.9x1.25_c190221.nc
-
-lnd/clm2/ndepdata/fndep_clm_SSP126_b.e21.BWSSP126cmip6.f09_g17.CMIP6-SSP1-2.6-WACCM.001_2014-2101_monthly_0.9x1.25_c190221.nc
+
lnd/clm2/ndepdata/fndep_clm_SSP126_b.e21.BWSSP126cmip6.f09_g17.CMIP6-SSP1-2.6-WACCM.001_2014-2101_monthly_0.9x1.25_c190221.nc
-
lnd/clm2/ndepdata/fndep_clm_SSP245_b.e21.BWSSP245cmip6.f09_g17.CMIP6-SSP2-4.5-WACCM.001_2014-2101_monthly_0.9x1.25_c190401.nc
lnd/clm2/ndepdata/fndep_clm_SSP370_b.e21.BWSSP370cmip6.f09_g17.CMIP6-SSP3-7.0-WACCM.001_2014-2101_monthly_0.9x1.25_c190401.nc
-
-lnd/clm2/ndepdata/fndep_clm_SSP370_b.e21.BWSSP370cmip6.f09_g17.CMIP6-SSP3-7.0-WACCM.001_2014-2101_monthly_0.9x1.25_c190401.nc
-
-lnd/clm2/ndepdata/fndep_clm_SSP585_b.e21.BWSSP585cmip6.f09_g17.CMIP6-SSP5-8.5-WACCM.001_2014-2101_monthly_0.9x1.25_c190211.nc
+lnd/clm2/ndepdata/fndep_clm_hist_b.e21.BWHIST.f09_g17.CMIP6-historical-WACCM.ensmean_1849-2015_monthly_0.9x1.25_c180926.nc
+
+
+lnd/clm2/ndepdata/fndep_clm_SSP585_b.e21.BWSSP585cmip6.f09_g17.CMIP6-SSP5-8.5-WACCM.001_2014-2101_monthly_0.9x1.25_c190211.nc
+lnd/clm2/ndepdata/fndep_clm_SSP126_b.e21.BWSSP126cmip6.f09_g17.CMIP6-SSP1-2.6-WACCM.001_2014-2101_monthly_0.9x1.25_c190221.nc
+lnd/clm2/ndepdata/fndep_clm_SSP245_b.e21.BWSSP245cmip6.f09_g17.CMIP6-SSP2-4.5-WACCM.001_2014-2101_monthly_0.9x1.25_c190401.nc
+lnd/clm2/ndepdata/fndep_clm_SSP370_b.e21.BWSSP370cmip6.f09_g17.CMIP6-SSP3-7.0-WACCM.001_2014-2101_monthly_0.9x1.25_c190401.nc
cycle
NDEP_month
limit
-
-extend
-NDEP_year
-lnd/clm2/ndepdata/fndep_clm_hist_simyr1849-2006_1.9x2.5_c100428.nc
-
-
-lnd/clm2/ndepdata/fndep_clm_rcp2.6_simyr1849-2106_1.9x2.5_c100428.nc
-lnd/clm2/ndepdata/fndep_clm_rcp2.6_simyr1849-2106_1.9x2.5_c100428.nc
-lnd/clm2/ndepdata/fndep_clm_rcp6.0_simyr1849-2106_1.9x2.5_c100428.nc
-lnd/clm2/ndepdata/fndep_clm_rcp4.5_simyr1849-2106_1.9x2.5_c100428.nc
-lnd/clm2/ndepdata/fndep_clm_rcp2.6_simyr1849-2106_1.9x2.5_c100428.nc
-lnd/clm2/ndepdata/fndep_clm_rcp6.0_simyr1849-2106_1.9x2.5_c100810.nc
-lnd/clm2/ndepdata/fndep_clm_rcp4.5_simyr1849-2106_1.9x2.5_c100428.nc
-lnd/clm2/ndepdata/fndep_clm_rcp8.5_simyr1849-2106_1.9x2.5_c100428.nc
+cycle
+NDEP_month
+limit
bilinear
@@ -2292,6 +2269,8 @@ lnd/clm2/surfdata_map/surfdata_conus_30_x8_hist_78pfts_CMIP6_simyr1850_c190128.n
>lnd/clm2/mappingdata/maps/ne4np4/map_5x5min_ORNL-Soil_to_ne4np4_nomask_aave_da_c170706.nc
+
+
+
+