Northern European summer temperature variations over the Common Era from integrated tree-ring density records

noaa-recon-16975 Northern European 2000 Year Summer Temperature Reconstruction Esper, J.; Düthorn, E.; Krusic, P.J.; Timonen, M.; Büntgen, U. Northern European 2000 Year Summer Temperature Reconstruction 2014-07-23 NCDC-Paleoclimatology ONLINE Files Pending https://www.ncdc.noaa.gov/paleo/study/16975 Investigator J. Esper Investigator E. Düthorn Investigator P.J. Krusic Investigator M. Timonen Investigator U. Büntgen earth science paleoclimate climate reconstructions|tree ring age,null,null,year Common Era,null,climate reconstructions|tree ring,null,null,N,null earth science paleoclimate climate reconstructions|tree ring surface temperature,ring density,null,degree Celsius,Jun-Aug,climate reconstructions|tree ring,anomalized,null,N,based on latewood density earth science paleoclimate reconstructions air temperature geoscientificInformation Air Temperature Reconstruction temperature PISY Pinus sylvestris L. Scots pine Scotch pine -17 AD 2006 AD 1967 cal yr BP -56 cal yr BP Complete 50 70 5 30 Continent Europe Northern Europe Northern Europe>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 Jan Esper, Elisabeth Düthorn, Paul J. Krusic, Mauri Timonen, and Ulf Büntgen 2014 Northern European summer temperature variations over the Common Era from integrated tree-ring density records Journal of Quaternary Science 29 5 487-494 10.1002/jqs.2726 http://onlinelibrary.wiley.com/doi/10.1002/jqs.2726/abstract

Tree-ring chronologies of maximum latewood density are most suitable to reconstruct annually resolved summer temperature variations of the late Holocene. The two longest such chronologies have been developed in northern Europe stretching back to the 2nd century BC, and the 5th century AD. We show where similarities between the two chronologies exist, and combine portions of both into a new summer temperature reconstruction for the Common Era. To minimize the transfer of potential biases, we assess the contribution of the candidate reconstructions' measurements, and exclude data (i) from exceptionally young and old trees, and (ii) produced by different laboratory technologies. Our new composite reconstruction reveals warmer conditions during Roman, Medieval and recent times, separated by prolonged cooling during the Migration period and Little Ice Age. Twentieth century warmth, as indicated in one of the existing density records, is reduced in the new reconstruction, also affecting the overall, millennial-scale, cooling trend over the late Holocene (-0.30C per 1000 years). Due to the reduced biological memory, typical for tree-ring density measurements, the new reconstruction is most suitable for evaluating the rate and speed of abrupt summer cooling following large volcanic eruptions. STUDY NOTES: Summer temperature reconstruction based on integrated tree-ring maximum density (MXD) data sets of Nscan (Esper et al. 2012) and Torneträsk (Schweingruber et al. 1988)

GET DATA https://www1.ncdc.noaa.gov/pub/data/paleo/treering/reconstructions/europe/northerneurope2014temperature.txt Data File; Northern European 2000 Year Summer Temperature Reconstruction USA/NOAA DIF Version 9.8.4 2018-12-11 2018-12-11