Humanmade Pollutants May Be Expanding Tropical Zone, Study Says

Yale Environment 360: U.S. scientists say emissions in the Northern Hemisphere of black carbon aerosols and ozone, both of which absorb solar radiation, are likely causing the hemisphere's tropical regions to expand poleward. After comparing observations of tropic expansion — which suggest that the tropics have widened 0.7 degrees per decade since 1970, largely because of global warming — with climate models, researchers at University of California, Riverside, found that the climate models tended to underestimate that...

URL: http://e360.yale.edu/digest/black_carbon_ozone_may_be_expanding_tropical_belt/3469/?utm_source=feedburner&utm_medium=feed&utm_campaign=Feed%3A+YaleEnvironment360+%28Yale+Environment+360%29