Last millennium northern hemisphere summer temperatures from tree rings: Part I: The long term context

QUATERNARY SCIENCE REVIEWS

卷:134

Review

Wilson, Rob^1,2  Anchukaitis, Kevin^2,3,4  Briffa, Keith R.⁵  Buentgen, Ulf^6,8,9  Cook, Edward²  D'Arrigo, Rosanne²  Davi, Nicole^2,10  Esper, Jan¹¹  Frank, Dave⁶  Gunnarson, Bjoern¹²  Hegerl, Gabi¹³  Helama, Samuli¹⁴  Klesse, Stefan⁶  Krusic, Paul J.^7,12  Linderholm, Hans W.¹⁵  Myglan, Vladimir¹⁶  Osborn, Timothy J.⁵  Rydval, Milos^1,17  Schneider, Lea¹¹  Schurer, Andrew¹³  Wiles, Greg^2,18  Zhang, Peng¹⁵  Zorita, Eduardo¹⁹ 

[1] Univ St Andrews, Sch Geog & Geosci, St Andrews KY16 9AL, Fife, Scotland

[2] Columbia Univ, Lamont Doherty Earth Observ, Palisades, NY 10964 USA

[3] Univ Arizona, Sch Geog & Dev, Tucson, AZ USA

[4] Univ Arizona, Tree Ring Res Lab, Tucson, AZ 85721 USA

[5] Univ E Anglia, Sch Environm Sci, Climat Res Unit, Norwich NR4 7TJ, Norfolk, England

[6] Swiss Fed Res Inst WSL, CH-8903 Birmensdorf, Switzerland

[7] Navarino Environm Obs, Messinia, Greece

[8] Oeschger Ctr Climate Change Res, CH-3012 Bern, Switzerland

[9] Global Change Res Ctr AS CR, Brno 61300, Czech Republic

[10] William Paterson Univ, Wayne, NJ USA

[11] Johannes Gutenberg Univ Mainz, Dept Geog, D-55099 Mainz, Germany

[12] Stockholm Univ, Dept Phys Geog & Quaternary Geol, SE-10691 Stockholm, Sweden

[13] Univ Edinburgh, Grant Inst, Sch GeoSci, Edinburgh, Midlothian, Scotland

[14] Nat Resources Inst Finland, Rovaniemi, Finland

[15] Univ Gothenburg, Dept Earth Sci, SE-40530 Gothenburg, Sweden

[16] Siberian Fed Univ, Krasnoyarsk, Russia

[17] Czech Univ Life Sci Prague, Fac Forestry & Wood Sci, Prague, Czech Republic

[18] Coll Wooster, Dept Geol, Wooster, OH USA

[19] Helmholtz Zentrum Geesthacht, Inst Coastal Res, D-21502 Geesthacht, Germany

关键词: Tree-rings;    Northern hemisphere;    Last millennium;    Summer temperatures;    Reconstruction;    CMIP5 models;   

DOI  :  10.1016/j.quascirev.2015.12.005

来源: Elsevier

【 摘 要 】

Large-scale millennial length Northern Hemisphere (NH) temperature reconstructions have been progressively improved over the last 20 years as new datasets have been developed. This paper, and its companion (Part II, Anchukaitis et al. in prep), details the latest tree-ring (TR) based NH land air temperature reconstruction from a temporal and spatial perspective. This work is the first product of a consortium called N-TREND (Northern Hemisphere Tree-Ring Network Development) which brings together dendroclimatologists to identify a collective strategy for improving large-scale summer temperature reconstructions. The new reconstruction, N-TREND2015, utilises 54 records, a significant expansion compared with previous TR studies, and yields an improved reconstruction with stronger statistical calibration metrics. N-TREND2015 is relatively insensitive to the compositing method and spatial weighting used and validation metrics indicate that the new record portrays reasonable coherence with large scale summer temperatures and is robust at all time-scales from 918 to 2004 where at least 3 TR records exist from each major continental mass. N-TREND2015 indicates a longer and warmer medieval period (similar to 900 1170) than portrayed by previous TR NH reconstructions and by the CMIP5 model ensemble, but with better overall agreement between records for the last 600 years. Future dendroclimatic projects should focus on developing new long records from data-sparse regions such as North America and eastern Eurasia as well as ensuring the measurement of parameters related to latewood density to complement ring-width records which can improve local based calibration substantially. (C) 2015 Elsevier Ltd. All rights reserved.

【 授权许可】

Free