BüntgenAllenAnchukaitisEtAl2021

Référence

Büntgen, U., Allen, K., Anchukaitis, K.J., Arseneault, D., Boucher, É., Bräuning, A., Chatterjee, S., Cherubini, P., Churakova (Sidorova), O.V., Corona, C., Gennaretti, F., Grießinger, J., Guillet, S., Guiot, J., Gunnarson, B., Helama, S., Hochreuther, P., Hughes, M.K., Huybers, P., Kirdyanov, A.V., Krusic, P.J., Ludescher, J., Meier, W.J.-H., Myglan, V.S., Nicolussi, K., Oppenheimer, C., Reinig, F., Salzer, M.W., Seftigen, K., Stine, Alexander R., Stoffel, M., St. George, S., Tejedor, E., Trevino, A., Trouet, V., Wang, J., Wilson, R., Yang, B., Xu, G., Esper, J. (2021) The influence of decision-making in tree ring-based climate reconstructions. Nature Communications, 12(1):3411. (URL )

Résumé

Tree-ring chronologies underpin the majority of annually-resolved reconstructions of Common Era climate. However, they are derived using different datasets and techniques, the ramifications of which have hitherto been little explored. Here, we report the results of a double-blind experiment that yielded 15 Northern Hemisphere summer temperature reconstructions from a common network of regional tree-ring width datasets. Taken together as an ensemble, the Common Era reconstruction mean correlates with instrumental temperatures from 1794-2016 CE at 0.79 (p < 0.001), reveals summer cooling in the years following large volcanic eruptions, and exhibits strong warming since the 1980s. Differing in their mean, variance, amplitude, sensitivity, and persistence, the ensemble members demonstrate the influence of subjectivity in the reconstruction process. We therefore recommend the routine use of ensemble reconstruction approaches to provide a more consensual picture of past climate variability.

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@ARTICLE { BüntgenAllenAnchukaitisEtAl2021,
    AUTHOR = { Büntgen, U. and Allen, K. and Anchukaitis, K.J. and Arseneault, D. and Boucher, É. and Bräuning, A. and Chatterjee, S. and Cherubini, P. and Churakova (Sidorova), O.V. and Corona, C. and Gennaretti, F. and Grießinger, J. and Guillet, S. and Guiot, J. and Gunnarson, B. and Helama, S. and Hochreuther, P. and Hughes, M.K. and Huybers, P. and Kirdyanov, A.V. and Krusic, P.J. and Ludescher, J. and Meier, W.J.-H. and Myglan, V.S. and Nicolussi, K. and Oppenheimer, C. and Reinig, F. and Salzer, M.W. and Seftigen, K. and Stine, Alexander R. and Stoffel, M. and St. George, S. and Tejedor, E. and Trevino, A. and Trouet, V. and Wang, J. and Wilson, R. and Yang, B. and Xu, G. and Esper, J. },
    DATE = { 2021-06-09 },
    JOURNALTITLE = { Nature communication },
    TITLE = { The influence of decision-making in tree ring-based climate reconstructions },
    DOI = { 10.1038/s41467-021-23627-6 },
    ISSN = { 2041-1723 },
    NUMBER = { 1 },
    PAGES = { 3411 },
    URL = { https://doi.org/10.1038/s41467-021-23627-6 },
    VOLUME = { 12 },
    ABSTRACT = { Tree-ring chronologies underpin the majority of annually-resolved reconstructions of Common Era climate. However, they are derived using different datasets and techniques, the ramifications of which have hitherto been little explored. Here, we report the results of a double-blind experiment that yielded 15 Northern Hemisphere summer temperature reconstructions from a common network of regional tree-ring width datasets. Taken together as an ensemble, the Common Era reconstruction mean correlates with instrumental temperatures from 1794-2016 CE at 0.79 (p < 0.001), reveals summer cooling in the years following large volcanic eruptions, and exhibits strong warming since the 1980s. Differing in their mean, variance, amplitude, sensitivity, and persistence, the ensemble members demonstrate the influence of subjectivity in the reconstruction process. We therefore recommend the routine use of ensemble reconstruction approaches to provide a more consensual picture of past climate variability. },
    JOURNAL = { Nature Communications },
    OWNER = { Daniel Lesieur },
    REFID = { Büntgen2021 },
    TIMESTAMP = { 2021-06-09 },
    YEAR = { 2021 },
}

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