posted on Mar, 2 2013 @ 10:54 AM
"The study results essentially exonerate Asia, including India and China, two countries that are estimated to have increased their industrial sulfur
dioxide emissions by about 60 percent from 2000 to 2010 through coal burning, said lead study author Ryan Neely, who led the research as part of his
CU-Boulder doctoral thesis. Small amounts of sulfur dioxide emissions from Earth's surface eventually rise 12 to 20 miles into the stratospheric
aerosol layer of the atmosphere, where chemical reactions create sulfuric acid and water particles that reflect sunlight back to space, cooling the
"Neely said previous observations suggest that increases in stratospheric aerosols since 2000 have counterbalanced as much as 25 percent of
the warming scientists blame on human greenhouse gas emissions. "This new study indicates it is emissions from small to moderate volcanoes that have
been slowing the warming of the planet," said Neely, a researcher at the Cooperative Institute for Research in Environmental Sciences, a joint venture
of CU-Boulder and the National Oceanic and Atmospheric Administration."
A paper on the subject was published online in Geophysical Research Letters, a publication of the American Geophysical Union. Co-authors include
Professors Brian Toon and Jeffrey Thayer from CU-Boulder; Susan Solomon, a former NOAA scientist now at the Massachusetts Institute of Technology;
Jean Paul Vernier from NASA's Langley Research Center in Hampton, Va.; Catherine Alvarez, Karen Rosenlof and John Daniel from NOAA; and Jason English,
Michael Mills and Charles Bardeen from the National Center for Atmospheric Research in Boulder.
The new project was undertaken in part to resolve conflicting results of two recent studies on the origins of the sulfur dioxide in the stratosphere,
including a 2009 study led by the late David Hoffman of NOAA indicating aerosol increases in the stratosphere may have come from rising emissions of
sulfur dioxide from India and China. In contrast, a 2011 study led by Vernier -- who also provided essential observation data for the new GRL study --
showed moderate volcanic eruptions play a role in increasing particulates in the stratosphere, Neely said.
The new GRL study also builds on a 2011 study led by Solomon showing stratospheric aerosols offset about a quarter of the greenhouse effect warming on
Earth during the past decade, said Neely, also a postdoctoral fellow in NCAR's Advanced Study Program."
Continued artical in link.
Well this is interesting. I so if the drop in temp is not because of global warming but because of volcanos. Maybe we could be expecting some major
events in the near future. Maybe volcanos play a part in how an iceage happens? Just leeks outs and cools the planet over till the currents slow down
and everything freezes.
Thought id share this with you guys!
(visit the link for the full news article)
edit on 2-3-2013 by CrypticSouthpaw because: (no reason given)