mean ∫dP [ NOAA NCEP-NCAR CDAS-1 MONTHLY Intrinsic PressureLevel CBVQ ] Covar. v and specific hum
NCEP-NCAR CDAS-1 MONTHLY Intrinsic PressureLevel CBVQ int_dP int_dP Covar. v and specific hum from NOAA: National Oceanic and Atmospheric Adminstration.