Global Database of Borehole Temperatures and Climate Reconstructions

Huang, Shaopeng; Pollack, HN; Shen, P-Y

doi:10.22498/pages.7.2.18

Cited by 20 publications

(28 citation statements)

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“…Long-term effects of Holocene warming following the last glacial maximum have been examined by Cull (1979Cull ( , 1980, and more recent climate change in southwestern Australia by Appleyard (2005). Here we examine 57 temperature profiles measured in boreholes distributed across Australia, drawn from a global database of borehole temperatures assembled for the purpose of climate reconstruction over the past five centuries (Huang and Pollack, 1998). Profiles in this global database satisfy certain quality control criteria related to smoothness, depth range and sampling density.…”

Section: Geothermal Studies In Australiamentioning

confidence: 99%

“…Reconstruction of ground surface temperature history (GSTH) over the past five centuries at each of the sites listed in Table 1 was accomplished by Huang and Pollack (1998) using the Few Parameter Estimation (FPE) technique ; a variant of the Bayesian inversion scheme of Shen and Beck (1991)), in which the GSTH is parameterised in terms of five concatenated century-long trends. Such reconstructions emphasise only the low-frequency variability of the GSTH, and serve as a complement to traditional proxy reconstructions that often display annual resolution.…”

Section: Inversion Of Borehole Temperature Profilesmentioning

confidence: 99%

“…The link between depth and time is through the thermal diffusivity, a thermophysical property of the rock through which the climate signal is propagating. The borehole temperatures measured at each site, and the fivecentury-long trends recovered from the inversion of the borehole temperature profile are tabulated in the publicly accessible website http://www.ncdc.noaa.gov/paleo/borehole/ borehole.html (Huang and Pollack, 1998).…”

Section: Inversion Of Borehole Temperature Profilesmentioning

confidence: 99%

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Five centuries of climate change in Australia: the view from underground

Pollack

Huang

Smerdon

2006

J Quaternary Science

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Fifty-seven borehole temperature profiles from across Australia are analysed to reconstruct a ground surface temperature history for the past five centuries. The five-hundred-year reconstruction is characterised by a temperature increase of approximately 0.5 K, with most of the warming occurring in the 19th and 20th centuries. The 17th century was the coolest interval of the five-century reconstruction. Comparison of the geothermal reconstruction to the Australian annual surface air temperature time series in their period of overlap shows excellent agreement. The full geothermal reconstruction also agrees well with the low-frequency component of dendroclimatic reconstructions from Tasmania and New Zealand. The warming of Australia over the past five centuries is only about half that experienced by the continents of the Northern Hemisphere in the same time interval.

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Section: Geothermal Studies In Australiamentioning

confidence: 99%

Section: Inversion Of Borehole Temperature Profilesmentioning

confidence: 99%

Section: Inversion Of Borehole Temperature Profilesmentioning

confidence: 99%

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Five centuries of climate change in Australia: the view from underground

Pollack

Huang

Smerdon

2006

J Quaternary Science

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“…We used the temperature-depth profiles recorded in the Urals [Demezhko and Golovanova, 2007] and European boreholes [Huang and Pollack, 1998] as the initial data for analysis of climatic changes. Location of boreholes is introduced in Fig.…”

Section: Data and Analysesmentioning

confidence: 99%

Recovery From the Little Ice Age: Geothermal Evidences

Gornostayeva

Demezhko

2013

Geogr. environ. sustain.

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“…This is further evidence that the groundwater bias is quantitatively small in borehole-based temperature reconstructions on larger scales. The borehole temperature database has been screened to eliminate other sorts of groundwater influences that are more readily apparent (Huang and Pollack 1998).…”

Section: Limits On Borehole-based Reconstructionsmentioning

confidence: 99%

Surface Temperature Reconstructions for the Last 2,000 Years

North¹

2006

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Our understanding of climate and how it has varied over time is advancing rapidly as new data are acquired and new investigative instruments and methods are employed. Thus in 2005, I suggested to the U.S. Congress that the National Research Council (NRC) could help answer questions about the data and methods that have been used in constructing records of Earth's surface temperatures from times when there were no scientific instruments, using proxy indicators. How has temperature varied over the last 2,000 years? How certain is the answer to this question? Subsequently, this study was requested by Representative Sherwood Boehlert, chairman of the Committee on Science, U.S. House of Representatives. Chairman Boehlert asked for a clear and concise report in a relatively short period of time, and the NRC agreed to undertake the study quickly. An ad hoc committee was formed, with the group carefully composed to include the breadth and depth of expertise and perspectives needed to analyze all aspects of how surface temperatures are estimated and interpreted and to comment generally on climate science. The NRC asked the committee to summarize current scientific information on the temperature record for the past two millennia, describe the main areas of uncertainty and how significant they are, describe the principal methodologies used and any problems with these approaches, and explain how central is the debate over the paleoclimate temperature record to the state of scientific knowledge on global climate change.The committee has prepared a report that, in my view, provides policy makers and the scientific community with a critical view of surface temperature reconstructions and how they are evolving over time, as well as a good sense of how important our understanding of the paleoclimate temperature record is within the overall state of scientific knowledge on global climate change. The report does not make policy recommendations.I thank the members of the committee, who worked intensely to produce this careful report in a short period of time and contributed much personal time, insight, and energy. ForewordCopyright © National Academy of Sciences. All rights reserved.Surface Temperature Reconstructions for the Last 2,000 Years http://www.nap.edu/catalog/11676.htmlThe NRC staff and all those who contributed papers, data, graphics, and other information, as well as the independent experts who participated in the rigorous review process, were essential participants. Surface Temperature Reconstructions for the Last 2,000 Years http://www.nap.edu/catalog/11676.html ix This committee was asked to describe and assess the state of scientific efforts to reconstruct surface temperature records for the Earth over approximately the last 2,000 years. (The full Statement of Task appears in Appendix A.) Normally, a technical issue such as surface temperature reconstructions might not generate widespread attention, but this case brings interesting lessons about how science works and how science, especially climate science, is commun...

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Global Database of Borehole Temperatures and Climate Reconstructions

Cited by 20 publications

References 0 publications

Five centuries of climate change in Australia: the view from underground

Five centuries of climate change in Australia: the view from underground

Recovery From the Little Ice Age: Geothermal Evidences

Surface Temperature Reconstructions for the Last 2,000 Years

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