European warm-season temperature and hydroclimate since 850 CE

Ljungqvist, Fredrik Charpentier and Seim, Andrea and Krusic, Paul J. and Gonzalez-Rouco, Jesus Fidel and Werner, Johannes P. and Cook, Edward R. and Zorita, Eduardo and Luterbacher, Juerg and Xoplaki, Elena and Destouni, Georgia and Garcia-Bustainante, Elena and Aguilar, Camilo Andres Melo and Seftigen, Kristina and Wang, Jianglin and Gagen, Mary H. and Esper, Jan and Solomina, Olga and Fleitmann, Dominik and Buntgen, Ulf. (2019) European warm-season temperature and hydroclimate since 850 CE. ENVIRONMENTAL RESEARCH LETTERS, 14 (8). ARTN 084015.

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Official URL: https://edoc.unibas.ch/85379/

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The long-term relationship between temperature and hydroclimate has remained uncertain due to the short length of instrumental measurements and inconsistent results from climate model simulations. This lack of understanding is particularly critical with regard to projected drought and flood risks. Here we assess warm-season co-variability patterns between temperature and hydroclimate over Europe back to 850 CE using instrumental measurements, tree-ring based reconstructions, and climate model simulations. We find that the temperature-hydroclimate relationship in both the instrumental and reconstructed data turns more positive at lower frequencies, but less so in model simulations, with a dipole emerging between positive (warm and wet) and negative (warm and dry) associations in northern and southern Europe, respectively. Compared to instrumental data, models reveal a more negative co-variability across all timescales, while reconstructions exhibit a more positive co-variability. Despite the observed differences in the temperature-hydroclimate co-variability patterns in instrumental, reconstructed and model simulated data, we find that all data types share relatively similar phase-relationships between temperature and hydroclimate, indicating the common influence of external forcing. The co-variability between temperature and soil moisture in the model simulations is overestimated, implying a possible overestimation of temperature-driven future drought risks.
Faculties and Departments:05 Faculty of Science > Departement Umweltwissenschaften > Geowissenschaften > Quartärgeologie (Fleitmann)
UniBasel Contributors:Fleitmann, Dominik
Item Type:Article, refereed
Article Subtype:Research Article
Note:Publication type according to Uni Basel Research Database: Journal article
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Last Modified:25 Jan 2022 13:58
Deposited On:25 Jan 2022 13:58

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