The global warming science facts, black carbon is a major pollutant that not only kills thousands per year but has been found to be a major contributor to increasing global temperatures - a new peer reviewed study confirms findings of previous research
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Read here. While climate doomsday scientists and chicken-little pundits wasted everyone's time and money about catastrophic destruction from CO2-induced global warming and climate change, real scientists continued their investigations of the climate and what drives it. Latest research confirms what the National Academy of Sciences published way back in 2000.
A new study by Allen et al. has determined that black carbon and other modern pollutants have been major contributors to temperature warming, which has enhanced the expansion of the tropics into higher latitudes. This research also confirms that the IPCC's insistence that human CO2 is the principal driver of climate change is seriously wrong, beside being hopelessly outdated.
"Observational analyses have shown the width of the tropical belt increasing in recent decades as the world has warmed...we use a climate model with detailed aerosol physics to show that increases in heterogeneous warming agents—including black carbon aerosols and tropospheric ozone—are noticeably better than greenhouse gases at driving expansion, and can account for the observed summertime maximum in tropical expansion. Mechanistically, atmospheric heating from black carbon and tropospheric ozone has occurred at the mid-latitudes, generating a poleward shift of the tropospheric jet, thereby relocating the main division between tropical and temperate air masses." [Robert J.Allen, Steven C. Sherwood, Joel R. Norris, Charles S. Zender 2012: Nature]
Conclusions: The global warming science facts - black carbon, a major modern pollutant, is causing global warming and an expansion of the tropics in the Northern Hemisphere. Latest research confirms that human CO2 emissions are not the only human driver of global temperatures. Of course, this new research does not explain why global temperatures have fallen over the last 15 years, unless there is now less black carbon pollution.
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