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	<title>Niche Modeling &#187; Programming</title>
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	<description>The Power of Numeracy</description>
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		<title>Problem 1 of Climate Science</title>
		<link>http://landshape.org/enm/problem-1-of-climate-science/</link>
		<comments>http://landshape.org/enm/problem-1-of-climate-science/#comments</comments>
		<pubDate>Sun, 04 Apr 2010 07:03:24 +0000</pubDate>
		<dc:creator>david stockwell</dc:creator>
				<category><![CDATA[Climate]]></category>
		<category><![CDATA[Programming]]></category>
		<category><![CDATA[Statistics]]></category>
		<category><![CDATA[Theory]]></category>

		<guid isPermaLink="false">http://landshape.org/enm/?p=4081</guid>
		<description><![CDATA[Problem 1. If temperature is adequately represented by a deterministic trend due to increasing GHGs, why be concerned with the presence of a unit root? Rather than bloviate over the implications of a unit root (integrative behavior) in the global temperature series, a more productive approach is to formulate an hypothesis, and test it. A deterministic model of global temperature (y) and anthropogenic forcing (g) with random errors e is: yt=a+b.gt+&#949; An autoregressive model of changes in Read more [...]]]></description>
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		<slash:comments>119</slash:comments>
		</item>
		<item>
		<title>Australian Temperature Adjustments</title>
		<link>http://landshape.org/enm/australian-temperature-adjustments/</link>
		<comments>http://landshape.org/enm/australian-temperature-adjustments/#comments</comments>
		<pubDate>Mon, 30 Nov 2009 11:07:59 +0000</pubDate>
		<dc:creator>david stockwell</dc:creator>
				<category><![CDATA[All]]></category>
		<category><![CDATA[Climate]]></category>
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		<category><![CDATA[Statistics]]></category>

		<guid isPermaLink="false">http://landshape.org/enm/?p=3310</guid>
		<description><![CDATA[If you have seen the articles on the NZ temperature adjustments and Nordic temperature adjustments you might be interested in the Australian data. The issue with NZ and Nordic data that the raw temperature data for weather stations do not show the temperature increases indicated by the IPCC, raising the question of how the data have been adjusted. As Prof. Karlen states in the ClimateGate email #1221683947, temperature at many stations has not exceeded early 20th century temperatures: .. data Read more [...]]]></description>
		<wfw:commentRss>http://landshape.org/enm/australian-temperature-adjustments/feed/</wfw:commentRss>
		<slash:comments>19</slash:comments>
		</item>
		<item>
		<title>Is OHC Accelerating?</title>
		<link>http://landshape.org/enm/is-ohc-accelerating/</link>
		<comments>http://landshape.org/enm/is-ohc-accelerating/#comments</comments>
		<pubDate>Wed, 14 Oct 2009 20:38:44 +0000</pubDate>
		<dc:creator>david stockwell</dc:creator>
				<category><![CDATA[All]]></category>
		<category><![CDATA[Climate]]></category>
		<category><![CDATA[Programming]]></category>
		<category><![CDATA[Statistics]]></category>

		<guid isPermaLink="false">http://landshape.org/enm/?p=3048</guid>
		<description><![CDATA[Code and figures to quantify the answer to the question "Is ocean heat content is accelerating?" are below. The idea is that 'acceleration' is synonymous with the significance of a quadratic term in a regression: 1. Annual OHC data from NODC. 2. Fit a regression model (M1) incorporating linear and periodic terms of period 60 years (to account for Pacific Decadal Oscillation): x=time(OHC); f=x*pi*2/60; M1 = lm(OHC~x+sin(f)+cos(f)) 3. Fit another regression model with the addition of a quadratic Read more [...]]]></description>
		<wfw:commentRss>http://landshape.org/enm/is-ohc-accelerating/feed/</wfw:commentRss>
		<slash:comments>81</slash:comments>
		</item>
		<item>
		<title>Comment on McLean et al Submitted</title>
		<link>http://landshape.org/enm/comment-on-mclean-submitted/</link>
		<comments>http://landshape.org/enm/comment-on-mclean-submitted/#comments</comments>
		<pubDate>Tue, 11 Aug 2009 21:24:06 +0000</pubDate>
		<dc:creator>david stockwell</dc:creator>
				<category><![CDATA[All]]></category>
		<category><![CDATA[Climate]]></category>
		<category><![CDATA[Programming]]></category>
		<category><![CDATA[Reviews]]></category>
		<category><![CDATA[Theory]]></category>

		<guid isPermaLink="false">http://landshape.org/enm/?p=2863</guid>
		<description><![CDATA[Here is the abstract for our comment submitted to Geophysical Research Letters today. Bob Tisdale is acknowledged as the source of the idea in the first paragraph. Lets see how it goes. If you would like a copy, contact me via the form above. Update: Now available from arXiv Comment on "Influence of the Southern Oscillation on tropospheric temperature" by J. D. McLean, C. R. de Freitas, and R. M. Carter David R.B. Stockwell and Anthony Cox Abstract We demonstrate an alternative correlation Read more [...]]]></description>
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		<slash:comments>35</slash:comments>
		</item>
		<item>
		<title>Weekly Roundup</title>
		<link>http://landshape.org/enm/weekly-roundup/</link>
		<comments>http://landshape.org/enm/weekly-roundup/#comments</comments>
		<pubDate>Sun, 02 Aug 2009 20:50:33 +0000</pubDate>
		<dc:creator>david stockwell</dc:creator>
				<category><![CDATA[Climate]]></category>
		<category><![CDATA[Programming]]></category>
		<category><![CDATA[Statistics]]></category>

		<guid isPermaLink="false">http://landshape.org/enm/?p=2843</guid>
		<description><![CDATA[Last week I prepared a comment defending McLean's SOI paper. I shall send it in shortly. Basically, I extend their analysis a little and show that the majority of variation in a linear regression model predicting global temperature (not differences) can be accounted for using SOI-related terms. The sorry-state of Dr. Hathaway's prediction record is in the news. For example, in 2006, Dr. Hathaway looked at disturbances in the Earth's magnetic field that are caused by the Sun, and they were strong. Read more [...]]]></description>
		<wfw:commentRss>http://landshape.org/enm/weekly-roundup/feed/</wfw:commentRss>
		<slash:comments>16</slash:comments>
		</item>
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		<title>Influence of the Southern Oscillation on tropospheric temperature</title>
		<link>http://landshape.org/enm/influence-of-the-southern-oscillation-on-tropospheric-temperature/</link>
		<comments>http://landshape.org/enm/influence-of-the-southern-oscillation-on-tropospheric-temperature/#comments</comments>
		<pubDate>Thu, 23 Jul 2009 19:47:21 +0000</pubDate>
		<dc:creator>david stockwell</dc:creator>
				<category><![CDATA[All]]></category>
		<category><![CDATA[Climate]]></category>
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		<guid isPermaLink="false">http://landshape.org/enm/?p=2815</guid>
		<description><![CDATA[A potential AGW buster, attributing decadal temperature variation largely to internal oceanic effects, ENSO and over the longer term the 1976 Great Pacific Climate Shift, as we did here, is a new paper by Australian John McLean, with New Zealander Chris de Freitas, and Australian ex-pat Kiwi Bob Carter. That mean global tropospheric temperature has for the last 50 years fallen and risen in close accord with the SOI of 5â€“7 months earlier shows the potential of natural forcing mechanisms Read more [...]]]></description>
		<wfw:commentRss>http://landshape.org/enm/influence-of-the-southern-oscillation-on-tropospheric-temperature/feed/</wfw:commentRss>
		<slash:comments>110</slash:comments>
		</item>
		<item>
		<title>A semi-empirical approach to sea level rise</title>
		<link>http://landshape.org/enm/a-semi-empirical-approach-to-sea-level-rise/</link>
		<comments>http://landshape.org/enm/a-semi-empirical-approach-to-sea-level-rise/#comments</comments>
		<pubDate>Sat, 11 Jul 2009 21:03:01 +0000</pubDate>
		<dc:creator>david stockwell</dc:creator>
				<category><![CDATA[All]]></category>
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		<category><![CDATA[Theory]]></category>

		<guid isPermaLink="false">http://landshape.org/enm/?p=2618</guid>
		<description><![CDATA[Published in Science, this Rahmstorf 2007 article provides a high-end estimate of sea level rise of over a meter by the end of the century (rate of 10mm/yr). Linear extrapolation puts the rate of increase at only 1.4mm and 1.7mm per year depending on start date (1860 or 1950). The paper was followed by two critical comments, both bashing the statistics, and these are attached to the link above. Rahmstorf replied to those comments. The issues raised are familiar to readers of this, CA, Lucia, Read more [...]]]></description>
		<wfw:commentRss>http://landshape.org/enm/a-semi-empirical-approach-to-sea-level-rise/feed/</wfw:commentRss>
		<slash:comments>21</slash:comments>
		</item>
		<item>
		<title>Preprint on climatic regime shifts</title>
		<link>http://landshape.org/enm/preprint-on-climatic-regime-shifts/</link>
		<comments>http://landshape.org/enm/preprint-on-climatic-regime-shifts/#comments</comments>
		<pubDate>Thu, 09 Jul 2009 20:41:16 +0000</pubDate>
		<dc:creator>david stockwell</dc:creator>
				<category><![CDATA[All]]></category>
		<category><![CDATA[Climate]]></category>
		<category><![CDATA[Programming]]></category>
		<category><![CDATA[Reviews]]></category>
		<category><![CDATA[Statistics]]></category>
		<category><![CDATA[Theory]]></category>

		<guid isPermaLink="false">http://landshape.org/enm/?p=2594</guid>
		<description><![CDATA[Download: Structural break models of climatic regime-shifts: claims and forecasts Anthony asked if it would be difficult to statistically justify the breaks in temperature between 1976 and 1979 proposed by Quirk (2009) for Australian temperature. He has an interest in oceanographic regime-shifts and climate change. Sure, I said, a simple Chow test. We ended up rebutting the Easterling &#38; Wehner (2009) claim that describing temperatures since 1998 as declining is 'cherry picking', finding a Read more [...]]]></description>
		<wfw:commentRss>http://landshape.org/enm/preprint-on-climatic-regime-shifts/feed/</wfw:commentRss>
		<slash:comments>49</slash:comments>
		</item>
		<item>
		<title>Recent Climate Observations: Disagreement With  Projections</title>
		<link>http://landshape.org/enm/recent-climate-observations-disagreement-with-projections/</link>
		<comments>http://landshape.org/enm/recent-climate-observations-disagreement-with-projections/#comments</comments>
		<pubDate>Mon, 29 Jun 2009 10:41:21 +0000</pubDate>
		<dc:creator>david stockwell</dc:creator>
				<category><![CDATA[All]]></category>
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		<guid isPermaLink="false">http://landshape.org/enm/?p=2526</guid>
		<description><![CDATA[Appearing in Energy and Environment (ee-20-4_7-stockwell2) is a note by myself on a paper by IPCC lead authors Rahmstorf, S., Cazenave A., Church J.A., Hansen J.E., Keeling R.F., Parker D.E., and R.C.J. Somerville, Recent climate observations compared to projections published in Science in 2007. As shown by 102 citations in Google Scholar already, Rahmstorf et al 2007 has been one of the main references for alarmist calls to action because the "climate system is responding more quickly than the Read more [...]]]></description>
		<wfw:commentRss>http://landshape.org/enm/recent-climate-observations-disagreement-with-projections/feed/</wfw:commentRss>
		<slash:comments>36</slash:comments>
		</item>
		<item>
		<title>Proof of AGW</title>
		<link>http://landshape.org/enm/proof-of-agw/</link>
		<comments>http://landshape.org/enm/proof-of-agw/#comments</comments>
		<pubDate>Sun, 28 Jun 2009 14:01:14 +0000</pubDate>
		<dc:creator>david stockwell</dc:creator>
				<category><![CDATA[All]]></category>
		<category><![CDATA[Climate]]></category>
		<category><![CDATA[Programming]]></category>
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		<guid isPermaLink="false">http://landshape.org/enm/?p=2514</guid>
		<description><![CDATA[Given the way the components of the surface temperature record extracted from the SSA (singular spectrum analysis) line up with various potential causes of climate change in the previous post here, the temptation is to latch onto series 2, and say, aha, there is the forcing due to increase in CO2. It's the right shape, exponential. Its the right size, about 0.6C. But looking into fractal data is like seeing pictures in clouds. Be suspicious of magic methods that pull explanations out of the air. Read more [...]]]></description>
		<wfw:commentRss>http://landshape.org/enm/proof-of-agw/feed/</wfw:commentRss>
		<slash:comments>26</slash:comments>
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