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Climate sensitivity of Mediterranean pine growth reveals distinct east–west dipole

Seim, Andrea; Treydte, Kerstin; Trouet, Valerie; Frank, David; Fonti, Patrick; Tegel, Willy; Panayotov, Momchil; Fernández-Donado, Laura; Krusic, Paul and Büntgen, Ulf (2014) In International Journal of Climatology Epub ahead of print.
Abstract
The European Mediterranean region is governed by a characteristic climate of summer drought that is likely to increase in duration and intensity under predicted climate change. However, large-scale network analyses investigating spatial aspects of pre-instrumental drought variability for this biogeographic zone are still scarce. In this study we introduce 54 mid- to high-elevation tree-ring width (TRW) chronologies comprising 2186 individual series from pine trees (Pinus spp.). This compilation spans a 4000-km east–west transect from Spain to Turkey, and was subjected to quality control and standardization prior to the development of site chronologies. A principal component analysis (PCA) was applied to identify spatial growth patterns... (More)
The European Mediterranean region is governed by a characteristic climate of summer drought that is likely to increase in duration and intensity under predicted climate change. However, large-scale network analyses investigating spatial aspects of pre-instrumental drought variability for this biogeographic zone are still scarce. In this study we introduce 54 mid- to high-elevation tree-ring width (TRW) chronologies comprising 2186 individual series from pine trees (Pinus spp.). This compilation spans a 4000-km east–west transect from Spain to Turkey, and was subjected to quality control and standardization prior to the development of site chronologies. A principal component analysis (PCA) was applied to identify spatial growth patterns during the network’s common period 1862–1976, and new composite TRW chronologies were developed and investigated. The PCA reveals a common variance of 19.7% over the 54 Mediterranean pine chronologies. More interestingly, a dipole pattern in growth variability is found between the western (15% explained variance) and eastern (9.6%) sites, persisting back to 1330 AD. Pine growth on the Iberian Peninsula and Italy favours warm early growing seasons, but summer drought is most critical for ring width formation in the eastern Mediterranean region. Synoptic climate dynamics that have been in operation for the last seven centuries have been identified as the driving mechanism of a distinct east–west dipole in the growth variability of Mediterranean pines. (Less)
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author
publishing date
type
Contribution to journal
publication status
published
subject
keywords
climate dynamics, dendroclimatology, drought response, Mediterranean east-west dipole, palaeoclimatology, Pinus spp, principal component analysis, tree-ring width
in
International Journal of Climatology
volume
Epub ahead of print
publisher
John Wiley & Sons
external identifiers
  • scopus:84937073819
ISSN
1097-0088
DOI
10.1002/joc.4137
project
MERGE
language
English
LU publication?
no
id
6dba5422-7595-4c80-a991-ff1e51d56518 (old id 7515343)
date added to LUP
2015-07-08 14:55:23
date last changed
2017-11-19 04:18:58
@article{6dba5422-7595-4c80-a991-ff1e51d56518,
  abstract     = {The European Mediterranean region is governed by a characteristic climate of summer drought that is likely to increase in duration and intensity under predicted climate change. However, large-scale network analyses investigating spatial aspects of pre-instrumental drought variability for this biogeographic zone are still scarce. In this study we introduce 54 mid- to high-elevation tree-ring width (TRW) chronologies comprising 2186 individual series from pine trees (Pinus spp.). This compilation spans a 4000-km east–west transect from Spain to Turkey, and was subjected to quality control and standardization prior to the development of site chronologies. A principal component analysis (PCA) was applied to identify spatial growth patterns during the network’s common period 1862–1976, and new composite TRW chronologies were developed and investigated. The PCA reveals a common variance of 19.7% over the 54 Mediterranean pine chronologies. More interestingly, a dipole pattern in growth variability is found between the western (15% explained variance) and eastern (9.6%) sites, persisting back to 1330 AD. Pine growth on the Iberian Peninsula and Italy favours warm early growing seasons, but summer drought is most critical for ring width formation in the eastern Mediterranean region. Synoptic climate dynamics that have been in operation for the last seven centuries have been identified as the driving mechanism of a distinct east–west dipole in the growth variability of Mediterranean pines.},
  author       = {Seim, Andrea and Treydte, Kerstin and Trouet, Valerie and Frank, David and Fonti, Patrick and Tegel, Willy and Panayotov, Momchil and Fernández-Donado, Laura and Krusic, Paul and Büntgen, Ulf},
  issn         = {1097-0088},
  keyword      = {climate dynamics,dendroclimatology,drought response,Mediterranean east-west dipole,palaeoclimatology,Pinus spp,principal component analysis,tree-ring width},
  language     = {eng},
  publisher    = {John Wiley & Sons},
  series       = {International Journal of Climatology},
  title        = {Climate sensitivity of Mediterranean pine growth reveals distinct east–west dipole},
  url          = {http://dx.doi.org/10.1002/joc.4137},
  volume       = {Epub ahead of print},
  year         = {2014},
}