Giving Earth an Umbrella


	Giving Earth an Umbrella

tabsey

2-24-2008 7:30 AM

111 views

tags:

climate

tabsey says:

Sounds like a "last resort" to me and hope that they get it right.

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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://www.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/14b6c663-2605-4409-8c2a-b075858fe485/AC093547-6686-4D0D-BB77-2D1B4202290A/" 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://sciencenow.sciencemag.org/cgi/content/full/2008/222/1" href="http://sciencenow.sciencemag.org/cgi/content/full/2008/222/1" style="font-size: 11px;">sciencenow.sciencemag.org</a></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://sciencenow.sciencemag.org/cgi/content/full/2008/222/1"><P>
Alarmed by the lack of progress by governments in finding ways to slow emissions of CO<SUB>2</SUB>, climate researchers have begun to examine so-called geoengineering schemes (<A href="http://sciencenow.sciencemag.org/cgi/content/full/2007/1109/1"><I>Science</I>NOW</A>, 9 November 2007). One method involves injecting large amounts of sulfate particles into the upper atmosphere. Like the particles emitted during volcanic eruptions, sulfate aerosols cool the Earth by blocking a portion of the sun's rays. Previous studies of how such a scheme would lower Earth's temperature used back-of-the-envelope calculations. Instead of simulating the behavior of aerosols, researchers have turned down the intensity of the sun manually in their models.</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/AC093547-6686-4D0D-BB77-2D1B4202290A/blog/" title="blog or email this clip"><img src="http://content9.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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