The Galvez-Davison Index for Tropical Convection
As a preliminary validation exercise, GDI data computed using GFS model output was compared against cloud top temperatures derived from GOES data. The results are promising. They show that the GDI outperforms other convective instability indices in diagnosing the potential for different tropical convection regimes ranging from isolated shallow cells to widespread deep convection. It even produced better results than the K index, so far considered the most efficient index for tropical convection forecasting in the Americas. Potential applications include both the public and aviation sectors.