Atmospheric buoyancy and tropical cyclones
Buoyancy in the atmosphere connects net inward energy flux to emergent dynamic behavior. It is the trigger for convection occurring in local cells, but additionally aggregates into the hemispheric-scale flow patterns. Tropical cyclones form within and interact with this context. They do this both by actively consuming potential energy in the formation and intensification of their heat cycle, but they are additionally propagated by their contextual atmosphere flow, the Hadley and Walker circulations. Therefore the interaction between the two is of fundamental physical interest. To investigate this we use the state-of-the-art databases of tropical cyclone tracks and convection measures from the modern era reanalyses and analyse the connections on interannual and interdecadal time scales. For this purpose we use statistical approaches including EOF and SVD analysis.