NOAA NCEP-NCAR CDAS-1 MONTHLY Intrinsic[surface PressureLevel MSL total_air_column ]
grid: /X (degree_east) periodic (0) to (2.5W) by 2.5 N= 144 pts :grid
grid: /Y (degree_north) ordered (90N) to (90S) by 2.5 N= 73 pts :grid
grid: /T (months since 1960-01-01) ordered (Jan 1980) to (Aug 2014) by 1.0 N= 416 pts :grid
NOAA NCEP-NCAR CDAS-1 MONTHLY Intrinsic surface pressure[ X Y | T]
NOAA NCEP-NCAR CDAS-1 MONTHLY Intrinsic PressureLevel[CBMZW CBVQ phi rhum qa reld temp u vtemp vvel v CBUQ CBTMW CBVW CBTW relv CBTZW CBQW CBUW vpot psi ]
NOAA NCEP-NCAR CDAS-1 MONTHLY Intrinsic PressureLevel psi[ XY | P T]

CPTv10+ files for NOAA NCEP-NCAR CDAS-1 MONTHLY Intrinsic PressureLevel psi