Both Northern Hemisphere and South Hemisphere AND therefore overall Global hurricane activity has continued to sink to levels not seen since the 1970s. Even more astounding, when the Southern Hemisphere hurricane data is analyzed to create a global value, we see that Global Hurricane Energy has sunk to 30-year lows, at the least.
http://wattsupwiththat.com/2009/09/22/global-warming-more-hurricanes-still-not-happening/
Dana:
Hurricane climate experts in your study depend on field data. The amount of hurricane data is not enough for your climate models to project real 20 to 100 year forecasts. Yet again they are estimations!