b.e12.B1850.f09_g16.PIMP4-pliomip2.ccsm4.clm2.h0.
and
b.e12.B1850C5CN.f09_g16.preind.ccsm4.clm2.h0.

Set 9 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.