<?xml version="1.0" encoding="UTF-8"?><rss version="2.0"
	xmlns:content="http://purl.org/rss/1.0/modules/content/"
	xmlns:dc="http://purl.org/dc/elements/1.1/"
	xmlns:atom="http://www.w3.org/2005/Atom"
	xmlns:sy="http://purl.org/rss/1.0/modules/syndication/"
		>
<channel>
	<title>Comments on: Enormous glacier calves in largest Arctic event seen in 48 years</title>
	<atom:link href="http://blogs.discovermagazine.com/badastronomy/2010/08/23/enormous-glacier-calves-in-largest-arctic-event-seen-in-48-years/feed/" rel="self" type="application/rss+xml" />
	<link>http://blogs.discovermagazine.com/badastronomy/2010/08/23/enormous-glacier-calves-in-largest-arctic-event-seen-in-48-years/</link>
	<description></description>
	<lastBuildDate>Wed, 21 Nov 2012 15:12:45 +0000</lastBuildDate>
	<sy:updatePeriod>hourly</sy:updatePeriod>
	<sy:updateFrequency>1</sy:updateFrequency>
	<generator>http://wordpress.org/?v=3.4.2</generator>
	<item>
		<title>By: Ray</title>
		<link>http://blogs.discovermagazine.com/badastronomy/2010/08/23/enormous-glacier-calves-in-largest-arctic-event-seen-in-48-years/#comment-250637</link>
		<dc:creator>Ray</dc:creator>
		<pubDate>Wed, 25 Aug 2010 01:31:24 +0000</pubDate>
		<guid isPermaLink="false">http://blogs.discovermagazine.com/badastronomy/?p=19987#comment-250637</guid>
		<description>@ 43, Brian Too,


Thats the difference between egghead scientists and folks down here in central GA.  If we had a fox eating our chickens the last thing we&#039;d be trying to do is trap him.  Shotgun, meet Fox.  Fox, meet shotgun.  Problem solved.  And it cost approximately 50 cents.</description>
		<content:encoded><![CDATA[<p>@ 43, Brian Too,</p>
<p>Thats the difference between egghead scientists and folks down here in central GA.  If we had a fox eating our chickens the last thing we&#8217;d be trying to do is trap him.  Shotgun, meet Fox.  Fox, meet shotgun.  Problem solved.  And it cost approximately 50 cents.</p>
]]></content:encoded>
	</item>
	<item>
		<title>By: Chris Winter</title>
		<link>http://blogs.discovermagazine.com/badastronomy/2010/08/23/enormous-glacier-calves-in-largest-arctic-event-seen-in-48-years/#comment-250636</link>
		<dc:creator>Chris Winter</dc:creator>
		<pubDate>Wed, 25 Aug 2010 00:37:29 +0000</pubDate>
		<guid isPermaLink="false">http://blogs.discovermagazine.com/badastronomy/?p=19987#comment-250636</guid>
		<description>Ross (#23) wrote: &lt;i&gt;&quot;I finally finished the book “Superfreakonomics” and I would like to hear others’ opinion on the mitigation proposal described in the book: pumping sulfur dioxide into the polar stratosphere to mimic the cooling effect of supervolcano eruptions.&quot;&lt;/i&gt;

What Marcus said (#27).

There are two recent books on the subject of geoengineering (not just sulfate aerosols but cloud-brightening and plankton-goosing*). They are &lt;i&gt;How to Cool the Planet&lt;/i&gt; by Jeff Goodell and &lt;i&gt;Hacking the Planet&lt;/i&gt; by Eli Kintisch. Both are good, but I prefer the Kintisch.

The authors talked to a lot of scientists, and most are united in saying that geoengineering methods should be considered a last resort.

* Yes, I&#039;m being flippant here.</description>
		<content:encoded><![CDATA[<p>Ross (#23) wrote: <i>&#8220;I finally finished the book “Superfreakonomics” and I would like to hear others’ opinion on the mitigation proposal described in the book: pumping sulfur dioxide into the polar stratosphere to mimic the cooling effect of supervolcano eruptions.&#8221;</i></p>
<p>What Marcus said (#27).</p>
<p>There are two recent books on the subject of geoengineering (not just sulfate aerosols but cloud-brightening and plankton-goosing*). They are <i>How to Cool the Planet</i> by Jeff Goodell and <i>Hacking the Planet</i> by Eli Kintisch. Both are good, but I prefer the Kintisch.</p>
<p>The authors talked to a lot of scientists, and most are united in saying that geoengineering methods should be considered a last resort.</p>
<p>* Yes, I&#8217;m being flippant here.</p>
]]></content:encoded>
	</item>
	<item>
		<title>By: Brian Too</title>
		<link>http://blogs.discovermagazine.com/badastronomy/2010/08/23/enormous-glacier-calves-in-largest-arctic-event-seen-in-48-years/#comment-250635</link>
		<dc:creator>Brian Too</dc:creator>
		<pubDate>Tue, 24 Aug 2010 23:53:27 +0000</pubDate>
		<guid isPermaLink="false">http://blogs.discovermagazine.com/badastronomy/?p=19987#comment-250635</guid>
		<description>@5. Romeo Vitelli,

There&#039;s a small island off Newfoundland (can&#039;t remember the name--it&#039;s small and relatively inconsequential).  This island serves as a bird breeding site because there are no mammals, no reptiles, no predators (except perhaps predatory birds).

Anyhow an Arctic Fox somehow made it&#039;s way there and has been living a pretty good life for the last couple of years.  Lonely I suppose, but lots of food!  They think the fox got there via an iceberg that drifted down from the Arctic and the fox happened to be on board.

There are biologists on the island studying the birds.  When I heard the report (just last week I think) they were trying, unsuccessfully, to trap the fox and relocate it.</description>
		<content:encoded><![CDATA[<p>@5. Romeo Vitelli,</p>
<p>There&#8217;s a small island off Newfoundland (can&#8217;t remember the name&#8211;it&#8217;s small and relatively inconsequential).  This island serves as a bird breeding site because there are no mammals, no reptiles, no predators (except perhaps predatory birds).</p>
<p>Anyhow an Arctic Fox somehow made it&#8217;s way there and has been living a pretty good life for the last couple of years.  Lonely I suppose, but lots of food!  They think the fox got there via an iceberg that drifted down from the Arctic and the fox happened to be on board.</p>
<p>There are biologists on the island studying the birds.  When I heard the report (just last week I think) they were trying, unsuccessfully, to trap the fox and relocate it.</p>
]]></content:encoded>
	</item>
	<item>
		<title>By: Steve in Dublin</title>
		<link>http://blogs.discovermagazine.com/badastronomy/2010/08/23/enormous-glacier-calves-in-largest-arctic-event-seen-in-48-years/#comment-250634</link>
		<dc:creator>Steve in Dublin</dc:creator>
		<pubDate>Tue, 24 Aug 2010 22:49:32 +0000</pubDate>
		<guid isPermaLink="false">http://blogs.discovermagazine.com/badastronomy/?p=19987#comment-250634</guid>
		<description>&lt;blockquote&gt;Ya know, in looking at the charts of CO2, Temperature, Ice Ages &amp; such….It looks all the world to me like Temps and CO2 reach this certain point, and SNAP…Something says “Enough!!”, maybe a CO2 sucking mutant, Pine Tree or warm ocean loving Algae, Bacteria, or Plankton goes nuts and just scours all the CO2 gone…Poof, Ice Age. Out of the frying pan into the freezer.&lt;/blockquote&gt;

According to ice core samples, a CO2 increase *follows* a temperature increase (by about 800 years) for hundreds of thousands of years now. And we think we have a good explanation for it:

&lt;a href=&quot;http://en.wikipedia.org/wiki/Milankovitch_cycles&quot; rel=&quot;nofollow&quot;&gt;Milankovitch cycles&lt;/a&gt;

These put the Earth into an ice age, but at the other end they help pull it out again. Melting of ice sheets and heating of the oceans caused by increased solar irradiation causes trapped CO2 to be released, which acts as a feedback to further warm the earth, which releases more CO2, until the system reaches a relative equilibrium again.

But since the industrial revolution, demonstrably for the first time in at least hundreds of thousands of years, increased CO2 *leads* temperature increase. And the CO2 concentration is also *way* higher than it has been from any of those ice core samples going back all that time. Simple physics tells us that that if (some) infrared radiation can&#039;t escape the atmosphere since it is blocked by a greenhouse gas like CO2, that the extra heat has to contribute to warming the planet (both the surface and the oceans). We have measured this warming, and we can observe the effects of it. To deny it is happening is basically saying that you don&#039;t trust scientists to have done their homework when it comes to AGW (but all the other science that brings you stuff like iPods, GPS, and modern medicine is somehow spot on).

&lt;blockquote&gt;I’m selfish because I have an opinion that part of Florida may end up underwater and I prefer this to Michigan, New York, Pennsylvania, Minnesota, Illinois, Iowa, Wisconsin, Ohio, New England States, et cetera, being buried under snow permanently. OK, you can call me selfish.&lt;/blockquote&gt;

But that&#039;s an extremely implausible scenario, for reasons that have been explained. An ice age is just not gonna happen for a long, long time if we keep artificially warming the planet.</description>
		<content:encoded><![CDATA[<blockquote><p>Ya know, in looking at the charts of CO2, Temperature, Ice Ages &amp; such….It looks all the world to me like Temps and CO2 reach this certain point, and SNAP…Something says “Enough!!”, maybe a CO2 sucking mutant, Pine Tree or warm ocean loving Algae, Bacteria, or Plankton goes nuts and just scours all the CO2 gone…Poof, Ice Age. Out of the frying pan into the freezer.</p></blockquote>
<p>According to ice core samples, a CO2 increase *follows* a temperature increase (by about 800 years) for hundreds of thousands of years now. And we think we have a good explanation for it:</p>
<p><a href="http://en.wikipedia.org/wiki/Milankovitch_cycles" rel="nofollow">Milankovitch cycles</a></p>
<p>These put the Earth into an ice age, but at the other end they help pull it out again. Melting of ice sheets and heating of the oceans caused by increased solar irradiation causes trapped CO2 to be released, which acts as a feedback to further warm the earth, which releases more CO2, until the system reaches a relative equilibrium again.</p>
<p>But since the industrial revolution, demonstrably for the first time in at least hundreds of thousands of years, increased CO2 *leads* temperature increase. And the CO2 concentration is also *way* higher than it has been from any of those ice core samples going back all that time. Simple physics tells us that that if (some) infrared radiation can&#8217;t escape the atmosphere since it is blocked by a greenhouse gas like CO2, that the extra heat has to contribute to warming the planet (both the surface and the oceans). We have measured this warming, and we can observe the effects of it. To deny it is happening is basically saying that you don&#8217;t trust scientists to have done their homework when it comes to AGW (but all the other science that brings you stuff like iPods, GPS, and modern medicine is somehow spot on).</p>
<blockquote><p>I’m selfish because I have an opinion that part of Florida may end up underwater and I prefer this to Michigan, New York, Pennsylvania, Minnesota, Illinois, Iowa, Wisconsin, Ohio, New England States, et cetera, being buried under snow permanently. OK, you can call me selfish.</p></blockquote>
<p>But that&#8217;s an extremely implausible scenario, for reasons that have been explained. An ice age is just not gonna happen for a long, long time if we keep artificially warming the planet.</p>
]]></content:encoded>
	</item>
	<item>
		<title>By: Mike G</title>
		<link>http://blogs.discovermagazine.com/badastronomy/2010/08/23/enormous-glacier-calves-in-largest-arctic-event-seen-in-48-years/#comment-250633</link>
		<dc:creator>Mike G</dc:creator>
		<pubDate>Tue, 24 Aug 2010 21:51:21 +0000</pubDate>
		<guid isPermaLink="false">http://blogs.discovermagazine.com/badastronomy/?p=19987#comment-250633</guid>
		<description>Ross, see here: http://www.nature.com/ngeo/journal/v3/n8/abs/ngeo915.html and here: http://royalsociety.org/Geoengineering-the-climate/ for work on geoengineering (which includes pumping sulfates into the atmosphere). In short, the results are much more uncertain than the results of pumping lots of CO2 into the atmosphere, and it would be extremely hard to make everyone happy.</description>
		<content:encoded><![CDATA[<p>Ross, see here: <a href="http://www.nature.com/ngeo/journal/v3/n8/abs/ngeo915.html" rel="nofollow">http://www.nature.com/ngeo/journal/v3/n8/abs/ngeo915.html</a> and here: <a href="http://royalsociety.org/Geoengineering-the-climate/" rel="nofollow">http://royalsociety.org/Geoengineering-the-climate/</a> for work on geoengineering (which includes pumping sulfates into the atmosphere). In short, the results are much more uncertain than the results of pumping lots of CO2 into the atmosphere, and it would be extremely hard to make everyone happy.</p>
]]></content:encoded>
	</item>
	<item>
		<title>By: Mike G</title>
		<link>http://blogs.discovermagazine.com/badastronomy/2010/08/23/enormous-glacier-calves-in-largest-arctic-event-seen-in-48-years/#comment-250632</link>
		<dc:creator>Mike G</dc:creator>
		<pubDate>Tue, 24 Aug 2010 21:45:21 +0000</pubDate>
		<guid isPermaLink="false">http://blogs.discovermagazine.com/badastronomy/?p=19987#comment-250632</guid>
		<description>Chaz, pay attention to the time and temperature scales on those charts of ice age cycles. It takes about 120,000 years to change 12 deg and back again- ~100kyr of cooling and a 20kyr &quot;snap&quot; back to interglacial temps (Keep in mind that the entire history of agriculture only spans about 10,000 yrs).  That&#039;s a cooling rate of roughly 0.012 degrees/century. Assuming we&#039;re about to be plunged into another ice age, at that rate it will be almost 6,000 years from now before the warming that has &lt;b&gt;already&lt;/b&gt; occurred since pre-industrial times is offset by the natural cooling cycle. Given that crops grew just fine at the temps seen in the mid 1800s, it&#039;s a pretty safe bet that natural cooling cycles, even if they were the dominant forcing at the present (which they aren&#039;t), would not pose a threat to crops for several millennia. If you want to compare the risks from warming vs. cooling, at least compare them on similar timescales (e.g. 0.012 C cooling vs. 3 C warming by 2100).</description>
		<content:encoded><![CDATA[<p>Chaz, pay attention to the time and temperature scales on those charts of ice age cycles. It takes about 120,000 years to change 12 deg and back again- ~100kyr of cooling and a 20kyr &#8220;snap&#8221; back to interglacial temps (Keep in mind that the entire history of agriculture only spans about 10,000 yrs).  That&#8217;s a cooling rate of roughly 0.012 degrees/century. Assuming we&#8217;re about to be plunged into another ice age, at that rate it will be almost 6,000 years from now before the warming that has <b>already</b> occurred since pre-industrial times is offset by the natural cooling cycle. Given that crops grew just fine at the temps seen in the mid 1800s, it&#8217;s a pretty safe bet that natural cooling cycles, even if they were the dominant forcing at the present (which they aren&#8217;t), would not pose a threat to crops for several millennia. If you want to compare the risks from warming vs. cooling, at least compare them on similar timescales (e.g. 0.012 C cooling vs. 3 C warming by 2100).</p>
]]></content:encoded>
	</item>
	<item>
		<title>By: Phil A</title>
		<link>http://blogs.discovermagazine.com/badastronomy/2010/08/23/enormous-glacier-calves-in-largest-arctic-event-seen-in-48-years/#comment-250631</link>
		<dc:creator>Phil A</dc:creator>
		<pubDate>Tue, 24 Aug 2010 20:46:02 +0000</pubDate>
		<guid isPermaLink="false">http://blogs.discovermagazine.com/badastronomy/?p=19987#comment-250631</guid>
		<description>I agree.</description>
		<content:encoded><![CDATA[<p>I agree.</p>
]]></content:encoded>
	</item>
	<item>
		<title>By: ChazInMT</title>
		<link>http://blogs.discovermagazine.com/badastronomy/2010/08/23/enormous-glacier-calves-in-largest-arctic-event-seen-in-48-years/#comment-250630</link>
		<dc:creator>ChazInMT</dc:creator>
		<pubDate>Tue, 24 Aug 2010 19:59:30 +0000</pubDate>
		<guid isPermaLink="false">http://blogs.discovermagazine.com/badastronomy/?p=19987#comment-250630</guid>
		<description>This would be a scale image.

&lt;a href=&quot;http://tinypic.com?ref=4htxxv&quot; target=&quot;_blank&quot; rel=&quot;nofollow&quot;&gt;&lt;img src=&quot;http://i38.tinypic.com/4htxxv.jpg&quot; border=&quot;0&quot; alt=&quot;Image and video hosting by TinyPic&quot;&gt;&lt;/a&gt;</description>
		<content:encoded><![CDATA[<p>This would be a scale image.</p>
<p><a href="http://tinypic.com?ref=4htxxv" target="_blank" rel="nofollow"><img src="http://i38.tinypic.com/4htxxv.jpg" border="0" alt="Image and video hosting by TinyPic"/></a></p>
]]></content:encoded>
	</item>
	<item>
		<title>By: ChazInMT</title>
		<link>http://blogs.discovermagazine.com/badastronomy/2010/08/23/enormous-glacier-calves-in-largest-arctic-event-seen-in-48-years/#comment-250629</link>
		<dc:creator>ChazInMT</dc:creator>
		<pubDate>Tue, 24 Aug 2010 17:03:46 +0000</pubDate>
		<guid isPermaLink="false">http://blogs.discovermagazine.com/badastronomy/?p=19987#comment-250629</guid>
		<description>All I asked is for consequences more dire than an Ice Age, I get &quot;Crop Failures (Maybe)&quot; Hmm looking at my list of Ice Age problems....lets see, Oh yeah, right here under mile thick glaciers covering large chunks of North America and Europe, Crop Failures...It&#039;s on my list too. And I like the personal attacks from someone who couldn&#039;t possibly know anything about me, I&#039;m selfish because I have an opinion that part of Florida may end up underwater and I prefer this to Michigan, New York, Pennsylvania, Minnesota, Illinois, Iowa, Wisconsin, Ohio, New England States, et cetera, being buried under snow permanently. OK, you can call me selfish.

Ya know, in looking at the charts of CO2, Temperature, Ice Ages &amp; such....It looks all the world to me like Temps and CO2 reach this certain point, and SNAP...Something says “Enough!!”, maybe a CO2 sucking mutant, Pine Tree or warm ocean loving Algae, Bacteria, or Plankton goes nuts and just scours all the CO2 gone...Poof, Ice Age. Out of the frying pan into the freezer.

Another funny thought I have, we figure out a way to moderate temperatures, get everything &quot;Juuuuuust Right&quot; and BAM Tambora explodes, or we get smacked by an asteroid...and God says Ha!

Bottom Line here, the CO2 level changes and Global Warming/Cooling periods have been occurring without mans intervention for millions of years, if the Earth decides it; we are all just bugs in the path of an 18 wheeler, deal with it.</description>
		<content:encoded><![CDATA[<p>All I asked is for consequences more dire than an Ice Age, I get &#8220;Crop Failures (Maybe)&#8221; Hmm looking at my list of Ice Age problems&#8230;.lets see, Oh yeah, right here under mile thick glaciers covering large chunks of North America and Europe, Crop Failures&#8230;It&#8217;s on my list too. And I like the personal attacks from someone who couldn&#8217;t possibly know anything about me, I&#8217;m selfish because I have an opinion that part of Florida may end up underwater and I prefer this to Michigan, New York, Pennsylvania, Minnesota, Illinois, Iowa, Wisconsin, Ohio, New England States, et cetera, being buried under snow permanently. OK, you can call me selfish.</p>
<p>Ya know, in looking at the charts of CO2, Temperature, Ice Ages &amp; such&#8230;.It looks all the world to me like Temps and CO2 reach this certain point, and SNAP&#8230;Something says “Enough!!”, maybe a CO2 sucking mutant, Pine Tree or warm ocean loving Algae, Bacteria, or Plankton goes nuts and just scours all the CO2 gone&#8230;Poof, Ice Age. Out of the frying pan into the freezer.</p>
<p>Another funny thought I have, we figure out a way to moderate temperatures, get everything &#8220;Juuuuuust Right&#8221; and BAM Tambora explodes, or we get smacked by an asteroid&#8230;and God says Ha!</p>
<p>Bottom Line here, the CO2 level changes and Global Warming/Cooling periods have been occurring without mans intervention for millions of years, if the Earth decides it; we are all just bugs in the path of an 18 wheeler, deal with it.</p>
]]></content:encoded>
	</item>
	<item>
		<title>By: Colombia</title>
		<link>http://blogs.discovermagazine.com/badastronomy/2010/08/23/enormous-glacier-calves-in-largest-arctic-event-seen-in-48-years/#comment-250628</link>
		<dc:creator>Colombia</dc:creator>
		<pubDate>Tue, 24 Aug 2010 14:31:36 +0000</pubDate>
		<guid isPermaLink="false">http://blogs.discovermagazine.com/badastronomy/?p=19987#comment-250628</guid>
		<description>&lt;i&gt;The likelihood is that if we continue business as usual, the changing precipitation patterns brought on by GW will be causing crop failures around the world at a time when the world population is nudging the 9 billion mark. Not a pretty picture by any means.&lt;/i&gt;

Or something completely different may occur.

I love how there hasn&#039;t really been anyone in history who has accurately predicted the future (beyond the occasional lucky guess about some specefic item) and yet random blog posters around the Internet are so sure of themselves on all manner of things decades or even centuries away.</description>
		<content:encoded><![CDATA[<p><i>The likelihood is that if we continue business as usual, the changing precipitation patterns brought on by GW will be causing crop failures around the world at a time when the world population is nudging the 9 billion mark. Not a pretty picture by any means.</i></p>
<p>Or something completely different may occur.</p>
<p>I love how there hasn&#8217;t really been anyone in history who has accurately predicted the future (beyond the occasional lucky guess about some specefic item) and yet random blog posters around the Internet are so sure of themselves on all manner of things decades or even centuries away.</p>
]]></content:encoded>
	</item>
</channel>
</rss>

<!-- Performance optimized by W3 Total Cache. Learn more: http://www.w3-edge.com/wordpress-plugins/

Page Caching using disk: basic

Served from: blogs.discovermagazine.com @ 2013-05-24 00:35:50 -->