A tree-ring field reconstruction of Fennoscandian summer hydroclimate variability for the last millennium

Verfasser / Beitragende:
[Kristina Seftigen, Jesper Björklund, Edward Cook, Hans Linderholm]
Ort, Verlag, Jahr:
2015
Enthalten in:
Climate Dynamics, 44/11-12(2015-06-01), 3141-3154
Format:
Artikel (online)
ID: 605474540
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024 7 0 |a 10.1007/s00382-014-2191-8  |2 doi 
035 |a (NATIONALLICENCE)springer-10.1007/s00382-014-2191-8 
245 0 2 |a A tree-ring field reconstruction of Fennoscandian summer hydroclimate variability for the last millennium  |h [Elektronische Daten]  |c [Kristina Seftigen, Jesper Björklund, Edward Cook, Hans Linderholm] 
520 3 |a Hydroclimatological extremes, such as droughts and floods, are expected to increase in frequency and intensity with global climate change. An improved knowledge of its natural variability and the underlying physical mechanisms for changes in the hydrological cycle will help understand the response of extreme hydroclimatic events to climate warming. This study presents the first gridded hydroclimatic reconstruction (0.5°×0.5° grid resolution), as expressed by the warm season Standardized Precipitation Evapotranspiration Index (SPEI), for most of Fennoscandia. A point-by-point regression approach is used to develop the reconstruction from a network of moisture sensitive tree-ring chronologies spanning over the past millennium. The reconstruction gives a unique opportunity to examine the frequency, severity, persistence, and spatial characteristics of Fennoscandian hydroclimatic variability in the context of the last 1,000years. The full SPEI reconstruction highlights the seventeenth century as a period of frequent severe and widespread hydroclimatic anomalies. Although some severe extremes have occurred locally throughout the domain over the fifteenth and sixteenth centuries, the period is surprisingly free from any spatially extensive anomalies. The twentieth century is not anomalous in terms of the number of severe and spatially extensive hydro climatic extremes in the context of the last millennium. Principle component analysis reveals that there are two dominant modes of spatial moisture variability across Fennoscandia. The same patterns are evident in the observational record and in the reconstructed dataset over the instrumental era and two paleoperiods. The 500mb pressure patterns associated with the two modes suggests the importance of the summer North Atlantic Oscillation. 
540 |a Springer-Verlag Berlin Heidelberg, 2014 
690 7 |a Hydroclimate  |2 nationallicence 
690 7 |a Tree-ring  |2 nationallicence 
690 7 |a Standardized precipitation evapotranspiration index  |2 nationallicence 
690 7 |a Field reconstruction  |2 nationallicence 
690 7 |a Fennoscandia  |2 nationallicence 
690 7 |a North Atlantic Oscillation  |2 nationallicence 
700 1 |a Seftigen  |D Kristina  |u Regional Climate Group, Department of Earth Sciences, University of Gothenburg, Box 460, 405 30, Gothenburg, Sweden  |4 aut 
700 1 |a Björklund  |D Jesper  |u Regional Climate Group, Department of Earth Sciences, University of Gothenburg, Box 460, 405 30, Gothenburg, Sweden  |4 aut 
700 1 |a Cook  |D Edward  |u Lamont-Doherty Earth Observatory, 10964, Palisades, NY, USA  |4 aut 
700 1 |a Linderholm  |D Hans  |u Regional Climate Group, Department of Earth Sciences, University of Gothenburg, Box 460, 405 30, Gothenburg, Sweden  |4 aut 
773 0 |t Climate Dynamics  |d Springer Berlin Heidelberg  |g 44/11-12(2015-06-01), 3141-3154  |x 0930-7575  |q 44:11-12<3141  |1 2015  |2 44  |o 382 
856 4 0 |u https://doi.org/10.1007/s00382-014-2191-8  |q text/html  |z Onlinezugriff via DOI 
898 |a BK010053  |b XK010053  |c XK010000 
900 7 |a Metadata rights reserved  |b Springer special CC-BY-NC licence  |2 nationallicence 
908 |D 1  |a research-article  |2 jats 
949 |B NATIONALLICENCE  |F NATIONALLICENCE  |b NL-springer 
950 |B NATIONALLICENCE  |P 856  |E 40  |u https://doi.org/10.1007/s00382-014-2191-8  |q text/html  |z Onlinezugriff via DOI 
950 |B NATIONALLICENCE  |P 700  |E 1-  |a Seftigen  |D Kristina  |u Regional Climate Group, Department of Earth Sciences, University of Gothenburg, Box 460, 405 30, Gothenburg, Sweden  |4 aut 
950 |B NATIONALLICENCE  |P 700  |E 1-  |a Björklund  |D Jesper  |u Regional Climate Group, Department of Earth Sciences, University of Gothenburg, Box 460, 405 30, Gothenburg, Sweden  |4 aut 
950 |B NATIONALLICENCE  |P 700  |E 1-  |a Cook  |D Edward  |u Lamont-Doherty Earth Observatory, 10964, Palisades, NY, USA  |4 aut 
950 |B NATIONALLICENCE  |P 700  |E 1-  |a Linderholm  |D Hans  |u Regional Climate Group, Department of Earth Sciences, University of Gothenburg, Box 460, 405 30, Gothenburg, Sweden  |4 aut 
950 |B NATIONALLICENCE  |P 773  |E 0-  |t Climate Dynamics  |d Springer Berlin Heidelberg  |g 44/11-12(2015-06-01), 3141-3154  |x 0930-7575  |q 44:11-12<3141  |1 2015  |2 44  |o 382