Questions Surrounding the 'hockey Stick' Temperature Studies: Implications for Climate Change Assessments : Hearings Before the Subcommittee on Oversight and Investigations of the Committee on Energy and Commerce, House of Representatives, One Hundred Ninth Congress, Second Session, July 19 and July 27, 2006U.S. Government Printing Office, 2006 - 872 pages |
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Page 9
... significant issues concerning the reliability of some of the climate change work that is transmitted to policymakers and characterized as well scrutinized . The Wegman Committee report will be the centerpiece of today's hearing . These ...
... significant issues concerning the reliability of some of the climate change work that is transmitted to policymakers and characterized as well scrutinized . The Wegman Committee report will be the centerpiece of today's hearing . These ...
Page 37
... significant difference in the reconstruction , and as you see , while the top panel illustrates the temperature rise or purported temperature rise in the last 100 years or so , the bottom panel when properly centered does not have this ...
... significant difference in the reconstruction , and as you see , while the top panel illustrates the temperature rise or purported temperature rise in the last 100 years or so , the bottom panel when properly centered does not have this ...
Page 38
... significant interactions with mainstream statisticians . Because of this apparent isolation , we decided to attempt to understand the paleoclimate community by exploring the social network of authorships in the temperature ...
... significant interactions with mainstream statisticians . Because of this apparent isolation , we decided to attempt to understand the paleoclimate community by exploring the social network of authorships in the temperature ...
Page 43
... the de - centering . The bottom panel shows the result when the principal components are properly centered . Thus the centering does make a significant difference to the reconstruction . -v70 0.5 1 1.5 10 -05 0.0 0.5 -v70_0_1 PC1 43.
... the de - centering . The bottom panel shows the result when the principal components are properly centered . Thus the centering does make a significant difference to the reconstruction . -v70 0.5 1 1.5 10 -05 0.0 0.5 -v70_0_1 PC1 43.
Page 44
... significant interactions with mainstream statisticians . Because of this apparent isolation , we decided to attempt to understand the paleoclimate community by exploring the social network of authorships in temperature FUGURE 6 We found ...
... significant interactions with mainstream statisticians . Because of this apparent isolation , we decided to attempt to understand the paleoclimate community by exploring the social network of authorships in temperature FUGURE 6 We found ...
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aerosols analysis anthropogenic assessment atmosphere average borehole Briffa bristlecone pine calculations calibration carbon dioxide Center CH-blend CHAIRMAN BARTON climate change climate models climate variability CO₂ committee conclusions correlation Crowley data set decades Earth eigenvectors emissions energy error estimates evidence Figure Geophys global temperature global warming greenhouse gases hockey stick Hughes ice cores increase indicators IPCC Jones Journal late 20th century Little Ice Age Mann's McIntyre and McKitrick mean Medieval Warm Period methodology methods Michael Mann multiproxy National Academy natural North Northern Hemisphere Northern Hemisphere temperature ocean paleoclimate paleoclimatology paper peer review principal components proxy data questions R.S. Bradley radiative forcing red noise regions replicate response scientific scientists signal significant simulations social network solar statistical statisticians Storch studies STUPAK surface temperature reconstructions temperature patterns tree ring tree-ring trend uncertainty University variance variations volcanic Wegman WHITFIELD
Popular passages
Page 570 - The scientific understanding of climate change is now sufficiently clear to justify nations taking prompt action. It is vital that all nations identify costeffective steps that they can take now, to contribute to substantial and long-term reduction in net global greenhouse gas emissions.
Page 406 - IPCC assessment report notes that "an increasing body of observations gives a collective picture of a warming world and other changes in the climate system...
Page 756 - The IPCC's conclusion that most of the observed warming of the last 50 years is likely to have been due to the increase in greenhouse gas concentrations accurately reflects the current thinking of the scientific community on this issue.
Page 66 - Climate change' means a change of climate which is attributed directly or indirectly to human activity that alters the composition of the global atmosphere and which is in addition to natural climate variability observed over comparable time periods.
Page 251 - Hemisphere indicate that the increase in temperature in the 20th century is likely to have been the largest of any century during the past 1000 years. It is also likely that, in the Northern Hemisphere, the 1990s was the warmest decade and 1998 the warmest year.
Page 442 - Council, they were responsible for making certain that an independent examination of this report was vn carried out in accordance with institutional procedures and that all review comments were carefully considered. Responsibility for the final content of this report rests entirely with the authoring committee and the institution.
Page 422 - The A2 storyline and scenario family describes a very heterogeneous world. The underlying theme is self-reliance and preservation of local identities. Fertility patterns across regions converge very slowly, which results in continuously increasing population. Economic development is primarily regionally oriented and per capita economic growth and technological change more fragmented and slower than other storylines.
Page 408 - Hence, it is physically plausible to expect that over a short time period (eg, 20 years) there may be differences in temperature trends. In addition, spatial sampling techniques can also explain some of the differences in trends, but these differences are not fully resolved.
Page 66 - The Parties should protect the climate system for the benefit of present and future generations of humankind, on the basis of equity and in accordance with their common but differentiated responsibilities and respective capabilities.
Page 413 - Confidence In the ability of models to project future climate has Increased. Complex physically-based climate models are required to provide detailed estimates of feedbacks and of regional features. Such models cannot yet simulate all aspects of climate (eg, they...