added rudimentary documentation of ENSSTD output into GEOSldas_HIST.rc

src/Applications/LDAS_App/GEOSldas_HIST.rc

@@ -407,8 +407,10 @@ COLLECTIONS:
 
 # For lndfcstana, *.frequency and *.ref_time must be consistent with the LDAS.rc resource
 # parameters LANDASSIM_DT and LANDASSIM_T0.
+# Output of the ensemble std-dev (ENSSTD) requires simultaneous output of the ensemble mean.  If the 
+# ensemble mean is not written out for a given field, that field's ENSSTD output will be MAPL_UNDEF.
 
-  inst3_1d_lndfcstana_Nt.descr:       'Tile-space,3-Hourly,Instantaneous,Single-Level,Assimilation,Ensemble-Average Land Forecast and Analysis Diagnostics',
+  inst3_1d_lndfcstana_Nt.descr:       'Tile-space,3-Hourly,Instantaneous,Single-Level,Assimilation,Ensemble Land Forecast and Analysis Diagnostics',
   inst3_1d_lndfcstana_Nt.nbits:       12,
   inst3_1d_lndfcstana_Nt.template:    '%y4%m2%d2_%h2%n2z.bin',
   inst3_1d_lndfcstana_Nt.mode:        'instantaneous',
@@ -438,8 +440,10 @@ COLLECTIONS:
 
 # For lndfcstana, *.frequency and *.ref_time must be consistent with the LDAS.rc resource
 # parameters LANDASSIM_DT and LANDASSIM_T0.
+# Output of the ensemble std-dev (ENSSTD) requires simultaneous output of the ensemble mean.  If the 
+# ensemble mean is not written out for a given field, that field's ENSSTD output will be MAPL_UNDEF.
 
-  inst3_2d_lndfcstana_Nx.descr:       '2d,3-Hourly,Instantaneous,Single-Level,Assimilation,Ensemble-Average Land Forecast and Analysis Diagnostics',
+  inst3_2d_lndfcstana_Nx.descr:       '2d,3-Hourly,Instantaneous,Single-Level,Assimilation,Ensemble Land Forecast and Analysis Diagnostics',
   inst3_2d_lndfcstana_Nx.nbits:       12,
   inst3_2d_lndfcstana_Nx.template:    '%y4%m2%d2_%h2%n2z.nc4',
   inst3_2d_lndfcstana_Nx.archive:     '%c/Y%y4',