Old: Global warming increases hurricanes.
New: Global warming decreases hurricanes.
January 24, 2008

      Why don’t we just take the average and say that since global warming may or may not even be happening, and if it is then the Sun might be the main cause, it’s impossible to say if global warming is having any effect on hurricanes at all?
      Oh, right. That makes for a lousy scare-headline and can’t be turned to anyone’s political advantage.
Global warming could reduce how many hurricanes hit the United States, according to a new federal study that clashes with other research. The new study is the latest in a contentious scientific debate over how manmade global warming may affect the intensity and number of hurricanes.
       In it, researchers link warming waters, especially in the Indian and Pacific oceans, to increased vertical wind shear in the Atlantic Ocean near the United States. Wind shear — a change in wind speed or direction — makes it hard for hurricanes to form, strengthen and stay alive.

      So that means “global warming may decrease the likelihood of hurricanes making landfall in the United States,” according to researchers at the National Oceanic and Atmospheric Administration’s Miami Lab and the University of Miami.