$partialdiff sub P$ [ NOAA NCEP-NCAR CDAS-1 MONTHLY Intrinsic PressureLevel CBMZW ]
grid: /T (0.01 kilogram-1 meter3) ordered (-131.5 0.01 kilogram-1 meter3) to (757.5 0.01 kilogram-1 meter3) by 6.0213902E-06 N= 147640320 pts :gridforrtl: severe (174): SIGSEGV, segmentation fault occurred Stack trace terminated abnormally.