Solar shades won't reverse global warming


	Solar shades won't reverse global warming

wildcat

7-14-2008 5:54 AM

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solar shades, climate change, global warming

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7-14-2008 11:35 AM

tabsey

Amid all the good ideas, there have to be some in the "great try" section.

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<div style="margin: 12px 0px; font-family: arial; color: #333333; background: #ffffff; border: solid 4px #e5e5e5; width: 100%; clear: left;"><div class="CM_CTB_Content_Wrap" style="margin: 0px; padding: 0px;background-color: #ffffff;"><div style="border-bottom: solid 1px #dcdcdc; white-space: nowrap; margin-bottom: 8px; background-color: #eeeeee ;background-image: url(http://clipmarks.com/images/source-bg.gif); background-repeat: repeat-x; height: 24px; line-height: 24px; vertical-align: middle; padding-bottom: 4px; color: #666666; font-size: 10px;" ><a href="http://clipmarks.com/clip-to-blog/" title="see clips that are hot right now"><img src="http://content.clipmarks.com/blog_embed/cbfd34db-867f-41c7-aec5-a91e1e4c17f6/08B438B9-F79A-42F3-8DB8-C462A37BFD8E/" alt="" width="19" height="19" border="0" style="vertical-align: middle; margin: 0px 4px; display: inline; border: none; float:none;" /></a>clipped from <a title="http://www.abc.net.au/science/articles/2008/07/14/2302880.htm?site=science&topic=latest" href="http://www.abc.net.au/science/articles/2008/07/14/2302880.htm?site=science&topic=latest" style="font-size: 11px;">www.abc.net.au</a></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://www.abc.net.au/science/articles/2008/07/14/2302880.htm?site=science&topic=latest"><div align="center"><img src="http://content9.clipmarks.com/blog_cache/www.abc.net.au/img/60677C00-85CE-441D-AC83-7DEEF113847B" alt="parasols on the beach" /></div></blockquote><div style="height: 2px; font-size: 2px; background: #dcdcdc; border-bottom: solid 1px #f5f5f5; margin: 2px 4px;"></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://www.abc.net.au/science/articles/2008/07/14/2302880.htm?site=science&topic=latest"><P class="first">A proposal to place mirrors in the sky to reflect sunlight away from earth won't give back the climate we had before, says a new study.</P></blockquote><div style="height: 2px; font-size: 2px; background: #dcdcdc; border-bottom: solid 1px #f5f5f5; margin: 2px 4px;"></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://www.abc.net.au/science/articles/2008/07/14/2302880.htm?site=science&topic=latest"><P>Researchers at the <A target="_blank" href="http://www.bristol.ac.uk/" linkindex="15"> University of Bristol </A> in the United Kingdom applied global climate models to predict the effect of using reflective sunshades to reduce the amount of sunlight that enters the earth's atmosphere back.</P></blockquote><div style="height: 2px; font-size: 2px; background: #dcdcdc; border-bottom: solid 1px #f5f5f5; margin: 2px 4px;"></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://www.abc.net.au/science/articles/2008/07/14/2302880.htm?site=science&topic=latest"><P>They compared two future scenarios, both with CO2 levels four times the pre-industrial baseline. In one scenario nothing was done, and in the other, sunlight intensity was reduced to a level that would reduce the global average temperature to pre-industrial levels</P></blockquote><div style="height: 2px; font-size: 2px; background: #dcdcdc; border-bottom: solid 1px #f5f5f5; margin: 2px 4px;"></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://www.abc.net.au/science/articles/2008/07/14/2302880.htm?site=science&topic=latest"><P>The second scenario simulated the use of sunshades, which reduced sunlight by about 4.2%.</P></blockquote><div style="height: 2px; font-size: 2px; background: #dcdcdc; border-bottom: solid 1px #f5f5f5; margin: 2px 4px;"></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://www.abc.net.au/science/articles/2008/07/14/2302880.htm?site=science&topic=latest"><P>"Although we managed to cancel out warming on a global average, what you end up with is some areas that warm up and some that cool down," says Dr Dan Lunt, who led the study, published in <A target="_blank" href="http://www.agu.org/journals/gl/" linkindex="16"><EM> Geophysical Research Letters </EM></A>.</P></blockquote></div><div style="margin: 0px 6px 6px 4px;"><table style="font-size: 11px;border-spacing: 0px;padding: 0px;" cellpadding="0" cellspacing="0" width="100%"><tr><td style="background:transparent;border-width:0px;padding:0px;">&nbsp;</td><td align="right" style="background:transparent;border-width:0px;padding:0px;width:107px" width="107"><a href="http://clipmarks.com/share/08B438B9-F79A-42F3-8DB8-C462A37BFD8E/blog/" title="blog or email this clip"><img src="http://content6.clipmarks.com/images/c2b-foot.png" border="0" alt="blog it" width="107" height="17" style="border-width:0px;padding:0px;margin:0px;" /></a></td></tr></table></div></div>

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