b.e21.BWHIST.f09_g17.CMIP6-historical-WACCM.ens.clm2.h0.
and
clm50_cesm201R_1deg_GSWP3V1_iso_WACCM1aerondep5yrensmnfinal_hist.clm2.h0.

Set 7 Description: Line plots, tables, and maps of RTM river flow and discharge to oceans
'D_' denotes a variable derived from two or more history file variables (lnd_func.ncl)
'C_' denotes a CASA model variable.