201210122316:
	/home/nersc/yanchun/tools/20thC/datm_diag_diff.sh	--->	dlwrf_sfc_YR_1948-1978-minus-ncar_rad_mean_YR_1948-1978.nc
	/home/nersc/yanchun/tools/20thC/datm_diag_diff.sh	--->	dlwrf_sfc_YR_1948-1978-minus-ncar_rad_mean_YR_1948-1978_PROJ_GL.*