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	<title>October 2015 &#8211; Greg Laden&#039;s Blog</title>
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	<title>October 2015 &#8211; Greg Laden&#039;s Blog</title>
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		<title>NASA Reports Astonishing Uptick In Surface Temperature</title>
		<link>https://gregladen.com/blog/2015/11/16/nasa-reports-astonishing-uptick-in-surface-temperature/</link>
					<comments>https://gregladen.com/blog/2015/11/16/nasa-reports-astonishing-uptick-in-surface-temperature/#comments</comments>
		
		<dc:creator><![CDATA[Greg Laden]]></dc:creator>
		<pubDate>Tue, 17 Nov 2015 02:00:09 +0000</pubDate>
				<category><![CDATA[Climate Change]]></category>
		<category><![CDATA[Global Warming]]></category>
		<category><![CDATA[October 2015]]></category>
		<category><![CDATA[Warmest Month]]></category>
		<guid isPermaLink="false">http://scienceblogs.com/gregladen/?p=21809</guid>

					<description><![CDATA[We knew October was going to be hot. Only hours ago the Japanese Meteorological Agency came out with their data showing October 2015 to be the hottest October in their database. I&#8217;ve not checked yet to see if it was the hottest month in their database. October 2015 was the hottest month in that entire &#8230; <a href="https://gregladen.com/blog/2015/11/16/nasa-reports-astonishing-uptick-in-surface-temperature/" class="more-link">Continue reading <span class="screen-reader-text">NASA Reports Astonishing Uptick In Surface Temperature</span> <span class="meta-nav">&#8594;</span></a>]]></description>
										<content:encoded><![CDATA[<p>We knew October was going to be hot. Only hours ago the <a href="http://scienceblogs.com/gregladen/2015/11/16/global-warming-record-breaking-october-heat/">Japanese Meteorological Agency came out with their data showing October 2015</a> to be the hottest October in their database.  <del>I&#8217;ve not checked yet to see if it was the hottest month in their database.</del> October 2015 was the hottest month in that entire database, which goes back to 1891.</p>
<p><H2>October 2015 was the Warmest Month in the Entire NASA Dabase</H2></p>
<p>Now, NASA GISS, which also keeps track of these things, has come out with their numbers.  The predictions from experts like John Abraham indicated that October 2015 might be in the 90s (that&#8217;s the anomaly value used by them, and that I use in the graphs here).  If the temperature anomaly were to be high enough in the 90s, it would equal or break the record for warmest month ever in the entire direct temperature measurement database.</p>
<p>But it didn&#8217;t do that, exactly. Nope. The temperature of the Earth&#8217;s surface as measured by thermometers at heat height over land, combined with the sea surface temperature, was not in the 90s. It was 104.</p>
<p>SO, we are one full degree warmer than the NASA baseline, which is NOT the proper pre-industrial baseline.  NASA uses 1951-1980 as their baseline, and that includes global warming that has already happened.</p>
<p>So here is the global average temperature anomaly for the entire NASA GISS database expressed as a running 12 month average, though October 2015:</p>
<p><a href="https://i0.wp.com/scienceblogs.com/gregladen/files/2015/11/giss_12-month_moving_average1.png"><img fetchpriority="high" decoding="async" src="https://i0.wp.com/scienceblogs.com/gregladen/files/2015/11/giss_12-month_moving_average1-610x457.png?resize=604%2C453" alt="giss_12-month_moving_average" width="604" height="453" class="alignleft size-large wp-image-21815" data-recalc-dims="1" /></a></p>
<p>And, here is the NASA GISS surface temperature anomaly for January through October, for all the years in the database, so you can see how 2015 stacks up so far:</p>
<p><a href="https://i0.wp.com/scienceblogs.com/gregladen/files/2015/11/giss_FirstMonthsOnly1.png"><img decoding="async" src="https://i0.wp.com/scienceblogs.com/gregladen/files/2015/11/giss_FirstMonthsOnly1-610x457.png?resize=604%2C453" alt="giss_FirstMonthsOnly" width="604" height="453" class="alignleft size-large wp-image-21816" data-recalc-dims="1" /></a></p>
<p>The graphic at the top of the post is for all the Octobers only.  If you want to use any of the graphs somewhere else, consider <a href="https://gregladen.com/blog/2015/11/2015-october-nasa-giss-global-surface-temperature-graphics/">GOING HERE</a> to get a higher resolution (just click on the graphic at that post and a higher res version will pop up).</p>
<p>Here are the warmest 20 months in the NASA GISS record of monthly temperature anomalies. Note that October 2015 is the warmest, and it beats out the previous warmest month, January &#8217;07, which was during a strong El Nino year:</p>
<p>2015    OCT 104<br />
2007    JAN 97<br />
2010    MAR 93<br />
2002    MAR 91<br />
2015    MAR 90<br />
2014    SEP 89<br />
1998    FEB 88<br />
2015    FEB 87<br />
2010    APR 87<br />
2014    OCT 86<br />
2014    MAY 86<br />
2015    JAN 81<br />
2014    AUG 81<br />
2013    NOV 81<br />
2015    SEP 80<br />
2005    OCT 80<br />
2015    AUG 79<br />
2014    DEC 79<br />
2014    APR 79<br />
2012    OCT 79</p>
<p>(Note that these are temerature anomalies, not temperatures. Boreal summers tend to be the warmest months globally, so the warmest month in actual temperatures is probably June or July. But climate <em>change</em> is tracked with anomalies for obvious reasons.)</p>
<p>Sou at HotWhopper has more, including the graph she makes every month showing surface temperatures in yet another way, <a href="http://blog.hotwhopper.com/2015/11/watching-global-thermometer-year-to.html">HERE</a>.</p>
<p>Andy Skuce has a post discussing October&#8217;s temperature reading, with another graph showing temperature anomalies across the months for several years, <a href="http://critical-angle.net/2015/11/16/nasa-october-temperature-update-a-new-monthly-record/">HERE</a>.</p>
<p>And, R. Stefan Rahmstorf has posted the following graph <a href="https://www.facebook.com/photo.php?fbid=919154048150852&#038;set=a.102796336453298.4005.100001687960349&#038;type=3">here</a> and <a href="https://twitter.com/rahmstorf/status/666425550097924096">here</a>, for yet another look.<br />
<a href="https://i0.wp.com/scienceblogs.com/gregladen/files/2015/11/CT-egYtUwAAcDzC.jpg"><img decoding="async" src="https://i0.wp.com/scienceblogs.com/gregladen/files/2015/11/CT-egYtUwAAcDzC-610x450.jpg?resize=604%2C446" alt="CT-egYtUwAAcDzC" width="604" height="446" class="alignleft size-large wp-image-21814" data-recalc-dims="1" /></a></p>
<p>Eli Rabett has taken Rahmstorf&#8217;s graphs for the last several months and turned them into a<a href="http://rabett.blogspot.com/2015/11/the-surge-surge.html"> moving GIF, HERE. </a></p>
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