Počet záznamů: 1  

European summer temperature response to annually dated volcanic eruptions over the past nine centuries

  1. 1.
    0482118 - ÚVGZ 2018 RIV US eng J - Článek v odborném periodiku
    Esper, J. - Schneider, L. - Krusic, P. J. - Luterbacher, J. - Büntgen, Ulf - Timonen, M. - Sirocko, F. - Zorita, E.
    European summer temperature response to annually dated volcanic eruptions over the past nine centuries.
    Bulletin of Volcanology. Roč. 75, č. 7 (2013), s. 1-14. ISSN 0258-8900. E-ISSN 1432-0819
    Institucionální podpora: RVO:67179843
    Klíčová slova: Climate * Europe * Instrumental stations * Maximum latewood density * Tree-rings * Volcanic forcing
    Obor OECD: Geology
    Impakt faktor: 2.667, rok: 2013

    The drop in temperature following large volcanic eruptions has been identified as an important component of natural climate variability. However, due to the limited number of large eruptions that occurred during the period of instrumental observations, the precise amplitude of post-volcanic cooling is not well constrained. Here we present new evidence on summer temperature cooling over Europe in years following volcanic eruptions. We compile and analyze an updated network of tree-ring maximum latewood density chronologies, spanning the past nine centuries, and compare cooling signatures in this network with exceptionally long instrumental station records and state-of-the-art general circulation models. Results indicate post-volcanic June-August cooling is strongest in Northern Europe 2 years after an eruption (-0.52 ± 0.05 °C), whereas in Central Europe the temperature response is smaller and occurs 1 year after an eruption (-0.18 ± 0.07 °C). We validate these estimates by comparison with the shorter instrumental network and evaluate the statistical significance of post-volcanic summer temperature cooling in the context of natural climate variability over the past nine centuries. Finding no significant post-volcanic temperature cooling lasting longer than 2 years, our results question the ability of large eruptions to initiate long-term temperature changes through feedback mechanisms in the climate system. We discuss the implications of these findings with respect to the response seen in general circulation models and emphasize the importance of considering well-documented, annually dated eruptions when assessing the significance of volcanic forcing on continental-scale temperature variations. © 2013 Springer-Verlag Berlin Heidelberg.
    Trvalý link: http://hdl.handle.net/11104/0277526

     
     
Počet záznamů: 1  

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