In a new review article in Nature Geoscience, two scientists say that black carbon, the stuff that gets kicked up into the air from biomass burning and diesel engines, among other things, could account for as much as 60 percent of the warming effect of carbon dioxide. That's three to four times greater than most estimates, and more than that of any greenhouse gas save CO2.
Scripps atmospheric scientist V. Ramanathan and University of Iowa chemical engineer Greg Carmichael looked at data from satellites, aircraft and surface instruments to gauge the real effect of black carbon.
They also explored the sources. Roughly a third of carbon that gets into the atmosphere originates in China and India, most likely from the burning of wood and cow manure, or coal to heat homes. Countries that rely on diesel fuel for transportation are also big contributors.
The soot can be a killer, too, and the scientists argue that eliminating black carbon would have a significant effect both on the environment and the people who inhale it regularly.
I keep on reading report after report of the effects of global warming on such diverse things as the declining population of polar bears, the reduction of corals, the melting of snow on Mt. Kilimanjaro, so on and so forth. Now it's the effect of soot and it's relations with snow melting in the Himalayas. You guys are supposed to be scientist and you still print stuff like this as if it was a foregone conclusion!!! This global warming hysteria is based on nothing but hype. Temperature readings over the past 10 years demonstrate that earths atmospheric and ocean temperatures have decreased while CO2 emissions are still increasing. Get it! The two scientist who's findings this article highlights admit that previous findings - and a consensus, mind you - were wrong. Now, if - according to the two guys - previous findings were wrong maybe, just maybe, there is more stuff that is wrong.