Black carbon and ozone are driving rapid northward expansion of the tropics in the northern hemisphere

Summit Voice: Global warming alone doesn`t account for a startlingly rapid northward expansion expansion of the tropics in the northern hemisphere, according to a new study from the University of California, Riverside. It appears that black carbon aerosols and tropospheric ozone, both manmade pollutants emitted predominantly in the Northern Hemisphere`s low- to mid-latitudes, are also significant factors, and perhaps the primary drivers in the changes. Observations show that the tropics have widened by 0.7...

URL: http://summitcountyvoice.com/2012/05/20/black-carbon-and-ozone-are-driving-rapid-northward-expansion-of-the-tropics-in-the-northern-hemisphere/
Enclosure: http://www.youtube.com/watch?feature=player_embedded&v=gqBCzWTs3r4