noaa-recon-6347 Huang and Pollack Global Database of Borehole Temperatures and Climate Reconstructions Huang, S.; Pollack, H.N. Huang and Pollack Global Database of Borehole Temperatures and Climate Reconstructions 1998-12-30 NCDC-Paleoclimatology ONLINE Files Pending https://www.ncdc.noaa.gov/paleo/study/6347 Investigator S. Huang Investigator H.N. Pollack earth science paleoclimate borehole|climate reconstructions surface temperature,null,null,degree Celsius,annual,borehole|climate reconstructions,anomalized,null,N,null earth science paleoclimate borehole|climate reconstructions age,null,null,year Common Era,null,borehole|climate reconstructions,null,null,N,null earth science paleoclimate reconstructions geoscientificInformation Air Temperature Reconstruction 1500 AD 2000 AD 450 cal yr BP -50 cal yr BP Complete -90 90 -180 180 Geographic Region Global Global>LATITUDE >LONGITUDE None Please cite original publication, online resource, dataset and publication DOIs (where available), and date accessed when using downloaded data. If there is no publication information, please cite investigator, title, online resource, and date accessed. The appearance of external links associated with a dataset does not constitute endorsement by the Department of Commerce/National Oceanic and Atmospheric Administration of external Web sites or the information, products or services contained therein. For other than authorized activities, the Department of Commerce/NOAA does not exercise any editorial control over the information you may find at these locations. These links are provided consistent with the stated purpose of this Department of Commerce/NOAA Web site. English https://www.ncdc.noaa.gov/cdo/f?p=226:1000:1572423995450401::NO::STUDY_ID,IS_NEW:6347,0#R142847279555883471-tab-R142848573452891261 DOC/NOAA/NESDIS/NCEI National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce https://www.ncdc.noaa.gov/data-access/paleoclimatology-data DATA Center Contact Bruce Bauer bruce.a.bauer@noaa.gov paleo@noaa.gov 303-497-6280 303-497-6513

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Boulder CO 80305-3328 USA online ASCII Huang, S. and Pollack, H.N. 1998. Global Borehole Temperature Database for Climate Reconstruction. IGBP PAGES/World Data Center-A for Paleoclimatology Data Contribution Series: #1998-044. NOAA/NGDC Paleoclimatology Program, Boulder CO, USA.

This project has as its goal the design, assembly, analysis and interpretation of geothermal observations on continents relevant to understanding the nature and causes of climate change over the past five centuries. The project was inititated by the Geothermal Laboratory of the University of Michigan, USA. Important collaborations have been developed with the Geophysical Institute of the Czech Academy of Sciences, and with a working group of the International Heat Flow Commission of IASPEI. Funding for this project has come from the U.S. National Science Foundation, the U.S. National Oceanic and Atmospheric Administration, the Intenational Geological Correlation Program, and the Czech - U.S. Science and Technology Program. The principal components of the database are: Basic geothermal observations from field surveys and laboratory measurements, principally comprising borehole temperature logs and thermophysical properties. This section includes data only from boreholes at least 200 m deep. The data listed are restricted to the range 20-600 meters. Data above 20 m have been omitted because they include annual variability, and data below 600 m have not been included because they contain no information about the past 500 years. Quality control measures have occasionally required the deletion of other data within the 20-600 m range. A five-century ground surface temperature history derived for each site by a standardized inversion procedure operating on the basic observations. The derived history is presented as century-long temperature trends for each of the past five centuries. This representation emphasizes longer term variations of the climate history, and thus is complementary to high resolution proxies such as tree rings, ice cores, corals and lake sediments. The name of the person who can be contacted to learn more about the data and the site. This is either the name of the original investigator who made the observations, or the name of a regional or national data compiler. Some data remain proprietary, and therefore are not accessible directly from this database. Database users desiring access to these data should request the data directly from the person listed as the data contact. A list of investigators engaged in climate studies involving geothermal data can be found at the original web site of this database at the University of Michigan. Additional citations for this database are: Huang, S., Pollack, H. N., and Shen, P.Y., 2000. Temperature trends over the past five centuries reconstructed from borehole temperatures. Nature, 403: 756-758. Pollack, H.N., Huang, S., and Shen, P.Y., 1998. Climate Change Record in Subsurface Temperatures A Global Perspective. Science, 282 279-281. STUDY NOTES: This project has as its goal the design, assembly, analysis and interpretation of geothermal observations on continents relevant to understanding the nature and causes of climate change over the past five centuries. The project was inititated by the Geothermal Laboratory of the University of Michigan, USA. Important collaborations have been developed with the Geophysical Institute of the Czech Academy of Sciences, and with a working group of the International Heat Flow Commission of IASPEI. Funding for this project has come from the U.S. National Science Foundation, the U.S. National Oceanic and Atmosphereic Administration, and the Czech - U.S. Science and Technology Program. The principal components of the database are Basic geothermal observations from field surveys and laboratory measurements, principally comprising borehole temperature logs and thermophysical properties. This section includes data only from boreholes at least 200 m deep. The data listed are restricted to the range 20-600 meters. Data above 20 m have been omitted because they include annual variability, and data below 600 m have not been included because they contain no information about the past 500 years. Quality control measures have occasionally required the deletion of other data within the 20-600 m range. A five-century ground surface temperature history derived for each site by a standardized inversion procedure operating on the basic observations. The derived history is presented as century-long temperature trends for each of the past five centuries. This representation emphasizes longer term variations of the climate history, and thus is complementary to high resolution proxies such as tree rings, ice cores, corals and lake sediments. The name of the person who can be contacted to learn more about the data and the site. This is either the name of the original investigator who made the observations, or the name of a regional or national data compiler. Some data remain proprietary, and therefore are not accessible directly from this database. Database users desiring access to these data should request the data directly from the person listed as the data contact. Reference: Huang, S., Pollack, H. N., and Shen, P.Y., 2000. Temperature trends over the past five centuries reconstructed from borehole temperatures. Nature, 403: 756-758.

GET DATA https://www1.ncdc.noaa.gov/pub/data/paleo/borehole/readme_borehole.txt Data Desrciption; Global Borehole Temperature Database Readme File GET DATA https://www1.ncdc.noaa.gov/pub/data/paleo/borehole/huang2000/ Data Folder; Global Borehole Temperature Database Files USA/NOAA DIF Version 9.8.4 2019-03-06 2019-03-06