Researchers from Princeton University choose six potential warming models for the global climate, then ran 15 several possible initial conditions on each of the six patterns, resulting in an aggregate of 90 possible futures. They observed a marked slowdown as the world warms, due to a poleward shift of the mid-latitude westerly winds.  Researchers believe this will develop the chance of storms producing extreme flooding that could break dams and spread pollution from industries and fields. Different research recommends that warming will lead to tropical cyclones becoming more powerful, producing more rainfall than earlier.