Changes

{{Show badges| Climate change}}The [[Fraser Institute]]'s '''Independent Summary for Policymakers''' (ISPM) was published on Feb. 5, 2007, just after the release of the [[Intergovernmental Panel on Climate Change]] (IPCC) Summary for Policy Makers, part of the Fourth Assessment Report on Climate Change (AR4). Economist and Fraser Institute Senior Fellow [[Ross McKitrick]] served as co-ordinator of the ISPM. The Fraser Institute's [http://www.fraserinstitute.org/commerce.web/publication_details.aspx?pubID=3184 ISPM overview page] contains an executive summary as well as a link to [http://www.fraserinstitute.org/COMMERCE.WEB/product_files/Independent%20Summary5.pdf download the current version of the ISPM]. The [http://www.fraserinstitute.org/COMMERCE.WEB/product_files/Independent%20Summary2.pdf original version of the ISPM] is also available (see section on errors and discrepancies below). For comparison, the various chapters of the IPCC WG1 AR4 report are available at the [http://ipcc-wg1.ucar.edu/wg1/wg1-report.html IPCC AR4 download page]. The full citation of this IPCC report is: Climate Change 2007: The Physical Science Basis. Contribution of Working Group I to the Fourth Assessment Report of the Intergovernmental Panel on Climate Change [Solomon, S., D. Qin, M. Manning, Z. Chen, M. Marquis, K.B. Averyt, M. Tignor and H.L. Miller (eds.)]. Cambridge University Press, Cambridge, United Kingdom and New York, NY, USA.

The ISPM also states: "Adjusting T2 data to remove an estimated contribution from the stratosphere yields tropospheric trend coefficients ranging from about 0.12 oC to 0.19 oC per decade, '''depending on the method.'''" [ISPM 2.1c] In fact, But the method employed makes little difference. The difference between UAH and RSS results is almost entirely appears to be mainly due to the different T2 differing tropospheric data filtering and adjustments calibrations '''priorindependent''' to of adjustments to remove spurious stratospheric cooling, as seen in ; a comparison of the "Troposphere" T2 and TMT (RSS stratospheric removal methodmid-troposphere) trends also show similar differences in trends between the UAH and "Lower troposphere" (UAH removal method) panelsRSS. [AR4 Fig. 3.18] For example, RSS adjusted trend is 0.19 if the RSS method is employed, and 0.18 if the UAH method is employed.

[[categoryCategory:Global warmingClimate change]]