| "The number of U.S. landfalling hurricanes from 1851-2006. The black straight line is the linear trend....The blue line is the seven-year running mean of U.S. landfalling hurricanes....The downward trend is below the 95% significance level." |
| Source: Wang, Chunzai & Lee, Sang-Ki. 2008. Global warming and United States landfalling hurricanes. GEOPHYSICAL RESEARCH LETTERS, VOL. 35. L2700808, pp 1-4. Retrieved Sept. 24, 2008 from http://www.agu.org/journals/gl/gl0802/2007GL032396/2007GL032396.pdf |