The attempt to label Hurricane Sandy as an "unprecedented" event due to climate change and global warming from human CO2 emissions is simply without merit - comparing 'Sandy' and other recent hurricanes to those in the past establishes that this supposed "superstorm" is just one of many 'Category 1' storms
(click on image to enlarge)
Despite the massive flooding devastation delivered by Hurricane Sandy on the huge and dense NY/NJ metropolitan area, it is not some "unprecedented" storm event that the U.S. East Coast has suffered. Nor is it a result of "high" CO2 emissions from man-made activities.
As this chart depicts, over the last 10 years, the East Coast has been hammered by 7 hurricanes, including the 'Category 1' Hurricane Sandy.
But for the 10 years ending 1962, during a period of substantially less atmospheric CO2, the East Coast was struck 10 times by 'Category 1' and higher hurricanes. (Note the 'Category 3' hurricane that wreaked incredible havoc on Long Island during 1954.)
All of these past hurricanes plotted on the chart originated east of the U.S coast, out in the Atlantic, just like Hurricane Sandy. And many of them snaked their way up the East Coast and finally made landfall at higher latitudes, just like 'Sandy.'