Global Warming and Hurricanes

The duration and strength of hurricanes has increased by about 50 % over the last 3 decades due to the fact of water tempeture rising.
Global warming has increased ocean temperature more than the atmospheric temperature (warmer water increases strength of hurricane). A hurricane is formed over warm water, and during its storm uses warm water for power. The Increase in water temperature make tropical storms easier to form, and giving hurricanes a greater chance to form. Another cause by global warming is the greenhouse affect. The burning of fossil fuels is rapidly giving more power to hurricanes. An example of this would be Hurricane Katrina.It is believed that hurricane Katrina was affected by global warming.
(picture of hurricane Katrina above).