(a) The 1900-2006 record of number of tropical cyclones in the Atlantic basin, stratified by those that struck land (e.g., as a tropical storm, subtropical storm, or hurricane) verses those that stayed over the open ocean.  The solid line is the 1900-2006 long-term mean of 9.2 per year. (b) Percentage of all reported tropical storms, subtropical storms, and hurricanes that struck land. (c) A bias-corrected time series of tropical storms, subtropical storms, and hurricanes to take into account undercounts before the advent of geostationary satellite imagery in 1966 and new technology available since about 2002.  The adjusted 1900-2006 long-term mean is 11.5 per year. Back to the article page >>