From ScientificBlogging:

Mathematical Model Says Climate Change Will Make Storms Worse

A new mathematical model developed by University of Michigan atmospheric and planetary scientist Nilton Renno says that dust devils, water spouts, tornadoes, hurricanes, and cyclones are all born of the same mechanism and will intensify as climate change warms the Earth’s surface.

Renno hopes the new equation will allow scientists to more accurately calculate the maximum expected intensity of a spiraling storm based on the depth of the troposphere (the lowest layer of Earth’s atmosphere) and the temperature and humidity of the air in the storm’s path.

This equation improves upon current methods, Renno says, because it takes into account the energy feeding the storm system and the full measure of friction slowing it down. Current thermodynamic models make assumptions about these variables, rather than include actual quantities.