rel_SST4K-release_tag.clm2.h0.
and
clm4_SST4K-rel.clm4.clm2.h0.

Set 9 Description: Line plots of annual trends in regional soil water/ice and temperature, runoff, snow water/ice, photosynthesis
'D_' denotes a variable derived from two or more history file variables (lnd_func.ncl)
'C_' denotes a CASA model variable.