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Will oceans surge 59 centimetres this century - or 25 metres?
JICWyllie
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1
8-31-2007 9:57 AM
159 views
tags:
environment
,
i-climate change
,
i-sea-level
,
i-increase
,
i-risks
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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/959a3be5-e9b2-4757-856b-f83eb47d7946/292B5E49-1CFB-4395-991A-AA0675204D95/" 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.theglobeandmail.com/servlet/story/LAC.20070825.MELTING25/TPStory/Environment" href="http://www.theglobeandmail.com/servlet/story/LAC.20070825.MELTING25/TPStory/Environment" style="font-size: 11px;">www.theglobeandmail.com</a></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://www.theglobeandmail.com/servlet/story/LAC.20070825.MELTING25/TPStory/Environment">In stark contrast to estimates put forward by the IPCC, Prof. Hansen and his colleagues argue that rapidly melting ice caps in Antarctica and Greenland could cause oceans to swell several metres by 2100 - or maybe even as much as 25 metres, </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.theglobeandmail.com/servlet/story/LAC.20070825.MELTING25/TPStory/Environment">As the atmosphere warms and the ice caps melt, they will not melt in a consistent, gradual fashion. Rather, they will start to melt faster and faster as the century progresses, quickly reaching a point where they could disappear altogether. This is because of "positive feedback" effects - factors that create a loop of exacerbated melting and global warming.</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.theglobeandmail.com/servlet/story/LAC.20070825.MELTING25/TPStory/Environment">as the temperature of the planet increases and the polar caps melt</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.theglobeandmail.com/servlet/story/LAC.20070825.MELTING25/TPStory/Environment">the mass release of methane from thawing permafrost (happening now in the Canadian Arctic) means that natural greenhouse-gas emissions could be added to man-made emissions</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.theglobeandmail.com/servlet/story/LAC.20070825.MELTING25/TPStory/Environment"> there is less ice to reflect sunlight and more water to absorb it, thus making the planet warmer and increasing ice cap melting further.</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;"> </td><td align="right" style="background:transparent;border-width:0px;padding:0px;width:107px" width="107"><a href="http://clipmarks.com/share/292B5E49-1CFB-4395-991A-AA0675204D95/blog/" title="blog or email this clip"><img src="http://content8.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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