These products were originally developed by Drs. Jyotika Virmani & Robert H. Weisberg to assess hurricane activities in the Gulf of America and the North Atlantic Ocean and have since been updated by Dr. Alexander K. Nickerson to include CAPE and air-sea enthalpy fluxes. The sea surface temperature, latent and sensible heat fluxes, surface winds and sea level pressure data are downloaded from thev NCEP/NCAR Reanalysis Derived Products provided by the NOAA/OAR/ESRL PSD, Boulder, Colorado, USA.
Reference:
Kalnay et al. 1996. The NCEP/NCAR 40-year reanalysis project, Bull. Amer. Meteor. Soc., 77, 437-470.