On Thu, Feb 11, 2010 at 3:14 PM, Jerry Johnson <[email protected]> wrote:
> > It closes for part of each year, but opens again the next spring. > > > but as a whole it is still closing year to year... Which has it's own effects I guess. http://www.scienceagogo.com/news/20100028220025data_trunc_sys.shtml 29 January 2010 *Ozone hole closure not so cool* by Kate Melville Using a new globalaerosol model and two decades of meteorological data, University of Leeds climatologists have discovered a feedback effect related to the ozone hole's closure that could actually increase warming in the southern hemisphere. The hole in the ozone layer above the Antarctic was once regarded as one of the biggest environmental threats, but the new discovery shows that it has instead helped to shield this region from carbon-induced warming over the past two decades. The new Leeds University study, published in *Geophysical ResearchLetters*, shows that high-speed winds in the area beneath the hole led to the formation of brighter summertime clouds, which reflect more of the sun's powerful rays. "These clouds have acted like a mirror to the sun's rays, reflecting the sun's heat away from the surface to the extent that warming from rising carbon emissions has effectively been cancelled out in this region during the summertime," said study co-author Ken Carslaw. "If, as seems likely, these winds die down, rising CO2 emissions could then cause the warming of the southern hemisphere to accelerate." ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~| Want to reach the ColdFusion community with something they want? Let them know on the House of Fusion mailing lists Archive: http://www.houseoffusion.com/groups/cf-community/message.cfm/messageid:312027 Subscription: http://www.houseoffusion.com/groups/cf-community/subscribe.cfm Unsubscribe: http://www.houseoffusion.com/cf_lists/unsubscribe.cfm?user=89.70.5
