noaa-recon-13544 Global and Hemispheric 400 Year Glacier Length Temperature Reconstructions Leclercq, P.W.; Oerlemans, J.H. Global and Hemispheric 400 Year Glacier Length Temperature Reconstructions 2012-11-30 NCDC-Paleoclimatology ONLINE Files Pending https://www.ncdc.noaa.gov/paleo/study/13544 Investigator P.W. Leclercq Investigator J.H. Oerlemans earth science paleoclimate climate reconstructions|historical|other collections age,null,null,year Common Era,null,climate reconstructions|historical|other collections,null,null,N,null earth science paleoclimate climate reconstructions|historical|other collections surface temperature,null,95% confidence interval margin of error,degree Celsius,annual,climate reconstructions|historical|other collections,anomalized,null,N,based on glacier length; 1961-1990 reference period earth science paleoclimate climate reconstructions|historical|other collections surface temperature,null,null,degree Celsius,annual,climate reconstructions|historical|other collections,anomalized,null,N,based on glacier length; 1961-1990 reference period earth science paleoclimate reconstructions air temperature geoscientificInformation Air Temperature Reconstruction temperature 1600 AD 2000 AD 350 cal yr BP -50 cal yr BP Complete -90 90 -180 180 Geographic Region Global Global>LATITUDE >LONGITUDE Geographic Region Southern Hemisphere Southern Hemisphere>LATITUDE >LONGITUDE Geographic Region Northern Hemisphere Northern Hemisphere>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 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 Paul Willem Leclercq and Johannes Oerlemans. 2012. Global and hemispheric temperature reconstruction from glacier length fluctuations. Climate Dynamics, Vol. 38, Issue 5-6, pp. 1065-1079. DOI: 10.1007/s00382-011-1145-7

Temperature reconstructions for recent centuries provide a historical context for the warming over the twentieth century. We reconstruct annual averaged surface temperatures of the past 400 years on hemispherical and global scale from glacier length fluctuations. We use the glacier length records of 308 glaciers. The reconstruction is a temperature proxy with decadal resolution that is completely independent of other temperature records. Temperatures are derived from glacier length changes using a linear response equation and an analytical glacier model that is calibrated on numerical model results. The global and hemispherical temperatures reconstructed from glacier length fluctuations are in good agreement with the instrumental record of the last century. Furthermore our results agree with existing multi-proxy reconstructions of temperature in the pre-instrumental period. The temperature record obtained from glacier fluctuations confirms the pronounced warming of the twentieth century, giving a global cumulative warming of 0.94 ± 0.31 K over the period 1830-2000 and a cumulative warming of 0.84 ± 0.35 K over the period 1600-2000. STUDY NOTES: Global, Northern hemisphere, and Southern hemisphere temperature reconstructions for period 1600 to 2000, based on world-wide glacier length changes. Data are the reconstructed temperature anomaly w.r.t. the 1961-1990 average temperature, plus the uncertainty at 95% confidence interval.

GET DATA https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/leclercq2012/leclercq2012nh.txt GET DATA https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/leclercq2012/leclercq2012global.txt GET DATA https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/leclercq2012/leclercq2012sh.txt USA/NOAA DIF Version 9.8.4 2018-12-11 2018-12-11