Comments on: Is James Hansen the Largest Source of Global Warming? http://www.climate-skeptic.com/2007/09/is-james-hansen.html Sat, 11 Feb 2012 16:51:39 +0000 hourly 1 http://wordpress.org/?v=3.0.3 By: TCO http://www.climate-skeptic.com/2007/09/is-james-hansen.html/comment-page-1#comment-51 TCO Tue, 25 Sep 2007 16:48:35 +0000 http://climate-movie.com/wordpress/2007/09/is-james-hansen.html#comment-51 <p>There seem to be two sources of different slopes:</p> <p>a. The "adjustment down" in mid century (increasing, in magnitude, linearly from 1975 back to 1939).</p> <p>b. The truncation of the series "back at" 1939. </p> <p>Just eying it, it looks like at least half of the slope delta is from the truncation. </p> <p>Understanding what elements drive truncation and what elements drive the linear (is it really, or does it just look that way?) adjustment over time, would be additive.</p> <p>Also, while looking at this, one should NOT get too wrapped up in an individual station or get into promotion of a general effect, based on a single case. Look at the Y2K error. It was bimodal.</p> There seem to be two sources of different slopes:

a. The “adjustment down” in mid century (increasing, in magnitude, linearly from 1975 back to 1939).

b. The truncation of the series “back at” 1939.

Just eying it, it looks like at least half of the slope delta is from the truncation.

Understanding what elements drive truncation and what elements drive the linear (is it really, or does it just look that way?) adjustment over time, would be additive.

Also, while looking at this, one should NOT get too wrapped up in an individual station or get into promotion of a general effect, based on a single case. Look at the Y2K error. It was bimodal.

]]> By: TCO http://www.climate-skeptic.com/2007/09/is-james-hansen.html/comment-page-1#comment-50 TCO Tue, 25 Sep 2007 03:10:58 +0000 http://climate-movie.com/wordpress/2007/09/is-james-hansen.html#comment-50 <p>You should not expect every single site to show an adjustment that is as expected (UHI correction in recent times). A perceptive reader already pointed out on Steve's site that the method of adjustment, corrects IN GENERAL for urbanization by comparison to nearby rural sites. Since there are some random variations, just by chance, it is possible that some urban stations may get corrected up, rather than down. This (should be) made up for by that subset of stations which are overcorrected up for random reasons. If you have a problem with THAT procedure, state it. </p> You should not expect every single site to show an adjustment that is as expected (UHI correction in recent times). A perceptive reader already pointed out on Steve’s site that the method of adjustment, corrects IN GENERAL for urbanization by comparison to nearby rural sites. Since there are some random variations, just by chance, it is possible that some urban stations may get corrected up, rather than down. This (should be) made up for by that subset of stations which are overcorrected up for random reasons. If you have a problem with THAT procedure, state it.

]]> By: peter whale http://www.climate-skeptic.com/2007/09/is-james-hansen.html/comment-page-1#comment-49 peter whale Mon, 24 Sep 2007 18:07:07 +0000 http://climate-movie.com/wordpress/2007/09/is-james-hansen.html#comment-49 <p>I think Hansen is a lying bastard </p> I think Hansen is a lying bastard

]]> By: dearieme http://www.climate-skeptic.com/2007/09/is-james-hansen.html/comment-page-1#comment-48 dearieme Mon, 24 Sep 2007 17:46:36 +0000 http://climate-movie.com/wordpress/2007/09/is-james-hansen.html#comment-48 <p>His "statistical methods (of very dubious quality)" are merely arbitrary adjustments, as far as I can see: what undergraduates used rudely to call fiddle-factors or fudge-factors. Of course, undergraduates rarely reflect that if the fiddle is added or subtracted it is a "term" not a "factor".</p> His “statistical methods (of very dubious quality)” are merely arbitrary adjustments, as far as I can see: what undergraduates used rudely to call fiddle-factors or fudge-factors. Of course, undergraduates rarely reflect that if the fiddle is added or subtracted it is a “term” not a “factor”.

]]> By: Dale http://www.climate-skeptic.com/2007/09/is-james-hansen.html/comment-page-1#comment-47 Dale Mon, 24 Sep 2007 17:17:43 +0000 http://climate-movie.com/wordpress/2007/09/is-james-hansen.html#comment-47 <p>Just like his buddy Al Gore (with the internet), Hansen has invented something...Anthroprogenic Global Warming.</p> Just like his buddy Al Gore (with the internet), Hansen has invented something…Anthroprogenic Global Warming.

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