Difference between revisions of "2008-10-30 Climate Science/analysis"
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...and more stuff I don't have time to parse... | ...and more stuff I don't have time to parse... | ||
| − | ===Part 3=== | + | ===Part 3 - SCIENCE IN THE SERVICE OF POLITICS=== |
* In response to the various pressures described above, scientists are "making special efforts to support the global warming hypothesis" | * In response to the various pressures described above, scientists are "making special efforts to support the global warming hypothesis" | ||
** Data that challenges the hypothesis are simply changed. | ** Data that challenges the hypothesis are simply changed. | ||
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* Two examples, both involving paleoclimate simulations (intended to show that current models are predictive of past history): | * Two examples, both involving paleoclimate simulations (intended to show that current models are predictive of past history): | ||
** [http://jgs.lyellcollection.org/cgi/content/abstract/138/2/153 Shackleton and Boersma, 1981] — fossil evidence showed much warmer temperatures in Minnesota and Spitzbergen, combined with colder equator; model showed uniform temperatures | ** [http://jgs.lyellcollection.org/cgi/content/abstract/138/2/153 Shackleton and Boersma, 1981] — fossil evidence showed much warmer temperatures in Minnesota and Spitzbergen, combined with colder equator; model showed uniform temperatures | ||
| + | *** Barron, 1987, assumed that the warming would be due to high levels of CO2, and using a climate GCM ([[General Circulation Model]]), he obtained relatively uniform warming at all latitudes | ||
| + | *** Huber, 2008, more recently obtained much the same results using a GCM, as have other GCM models in the interim; Huber now suggests that the climate data were wrong and maybe the equator was warmer after all | ||
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| + | * both of these examples may have involved legitimate corrections, but only corrections that sought to bring observations into agreement with models were initially considered ('''Query''': This doesn't seem like the whole story. Were there other models where the data ''did'' fit?) | ||
| + | * climate associated with ice ages is well described by the [[Milankovitch Hypothesis]] that does not call for any role for CO2 (discussed later) ('''Query''': Milankovitch, which is a general theory rather than a model, is a better fit for prehistoric climate data? How do you get data out of a theory without making a model?) | ||
| + | * IPCC, 1990 — the first [[IPCC]] assessment involved the "traditional" picture of the climate of the past 1100 years, whereing there was a [[medieval warm period]] that was somewhat warmer than the present as well as the little ice age that was cooler. This was an "embarrassment" for GW proponents (how did we get anything warmer than present without anthropogenic gases?)('''Comment''': It seems very unlikely that this would be seen as an embarrassment; the presence of other causes of global warming or cooling does not say anything about the existence or nonexistence of any other cause.) | ||
| + | ** "According to Demming, 2005, Jonathan Overpeck, in an email, remarked that one had to get rid of the medieval warm period. Overpeck is one of signators in Appendix 1." | ||
| + | ** Mann et al (1998, 1999) most infamously used primarily a few handfuls of tree ring records to obtain a reconstruction of Northern Hemisphere temperature going back eventually a thousand years that no longer showed a medieval warm period. | ||
| + | *** This became the famous [[global warming hockey stick]] graph. | ||
| + | ** '''Query''': is it really that terrible, if your model disagrees with your data, and your data is sketchy to begin with, to start looking for data which better supports the model? If you don't find any, that throws your model into doubt. | ||
| + | ** '''Query''': even the traditional climate reconstructions of the past 1100-2000 years which ''do'' clearly show the Medieval Warming also show the "hockey stick" jag starting in ~1900. GW theory is not all based on models, and this is one example. | ||
| + | |||
| + | ...article gives a few more examples of GW papers supposedly gone wrong... but I don't think he's making a good case against GW methodology. His case seems primarily based on the "fear" tactics that he claims GW proponents are using: in his case, fear that science has become corrupted, fear of being manipulated and controlled by bureaucrats, fear of looking stupid for being taken in by political dogma... | ||
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| + | This guy has wasted enough of my time for now. Maybe I (or someone else) will come back to this later and see if there's any meat in the rest of the article. --[[User:Woozle|Woozle]] 01:20, 8 May 2009 (UTC) | ||
| + | ===Part 4 - PRESSURES TO INHIBIT INQUIRY AND PROBLEM SOLVING=== | ||
| + | ===Part 5 - DANGERS FOR SCIENCE AND SOCIETY - CONCLUSION=== | ||