+ Site Statistics
References:
52,654,530
Abstracts:
29,560,856
PMIDs:
28,072,755
+ Search Articles
+ Subscribe to Site Feeds
Most Shared
PDF Full Text
+ PDF Full Text
Request PDF Full Text
+ Follow Us
Follow on Facebook
Follow on Twitter
Follow on LinkedIn
+ Translate
+ Recently Requested

On the spatiotemporal characteristics of Fennoscandian tree-ring based summer temperature reconstructions



On the spatiotemporal characteristics of Fennoscandian tree-ring based summer temperature reconstructions



Theoretical and Applied Climatology 91(1-4): 1-25



We analyse the spatial representation of five previously published multi-century to millennial length dendroclimatological reconstructions of Fennoscandian summer temperatures. The reconstructions, ranging from local to regional scale, were based on either tree-ring width (TRW) or maximum latewood density (MXD) data or on a combination of the two. TRW chronologies are shown to provide reasonably good spatial information mainly for July temperatures, but a combination of TRW and MXD yields a better spatial representation for the whole summer season (June-August). A multiple-site reconstruction does not necessarily provide better spatial representation than a single site reconstruction, depending on the criterion for selecting data and also on the strength of the climate signal in the tree-ring data. In a new approach to analyse the potential for further developing Fennoscandian temperature reconstructions, we selected from a network of TRW and MXD chronologies those having the strongest temperature information a priori, to obtain a strong common climate signal suitable for a regional-scale reconstruction. Seven separate, but not independent, reconstructions based on progressively decreasing numbers of chronologies were created. We show that it is possible to improve the spatial representation of available reconstructions back to around AD 1700, giving high correlations (> 0.7) with observed summer temperatures for nearly the whole of Fennoscandia, and even higher correlations (> 0.85) over much of central-northern Fennoscandia. Further sampling of older trees (e.g. dry-dead and subfossil wood) would be needed to achieve the same high correlations prior to AD 1700. Our analysis suggests that it should be possible to select a few key sites for improving the reconstructions before AD 1700. Since tree-ring data from northern Fennoscandia are used in all available hemispheric-scale temperature reconstructions for the last millennium, there is also a potential for slightly improving the quality of the hemispheric-scale reconstructions, by including an improved reconstruction for Fennoscandia. However, adding new chronologies from previously unsampled regions would potentially improve hemispheric-scale temperature reconstructions more substantially.

(PDF emailed within 0-6 h: $19.90)

Accession: 021491103

Download citation: RISBibTeXText

DOI: 10.1007/s00704-007-0311-7


Related references

Tree-ring density reconstructions of summer temperature patterns across western North America since 1600. Journal of climate 5(7): 735-754, 1992

July mean temperature and annual precipitation trends during the Holocene in the Fennoscandian tree-line area: pollen-based climate reconstructions. Holocene 11(5): 527-539, 2001

Spatiotemporal drought variability for central and eastern Asia over the past seven centuries derived from tree-ring based reconstructions. Quaternary International 283: 107-116, 2013

Agreement of 19th century summer temperature reconstructions in interior Alaska from multiple tree-ring sites, techniques, and species and tree growth under 21st century climate scenarios. Arctic Science Conference Abstracts 53: 52, 2002

Ranking of tree-ring based temperature reconstructions of the past millennium. Quaternary Science Reviews 145: 134-151, 2016

Volcanic signals in temperature reconstructions based on tree-ring records for North and South America. Pages 141-154 2001, 2001

Pollen-based quantitative climate reconstructions from the Fennoscandian tree-line area. Turun Yliopiston Maantieteen Laitoksen Jukaisuja = Publicationes Instituti Geographici Universitatis Turkuensis 165: 49-50, 2002

Holocene climate reconstructions from the Fennoscandian tree-line area based on pollen data from Toskaljavri. Quaternary Research 57(2): 191-199, 2002

Tree ring density-based summer temperature reconstruction for the central Hengduan Mountains in southern China. Global and Planetary Change 65(1-2): 0-11, 2009

Long-term summer AD 751-2008 temperature fluctuation in the French Alps based on tree-ring data. Boreas 40.2, 2011

Tree-ring based summer temperature reconstruction for the source region of the Yangtze River on the Tibetan Plateau. Global and Planetary Change 61(3-4): 313-320, 2008

Late-summer temperature reconstruction of the Eastern Himalayan region based on tree-ring data of Abies densa. Arctic Antarctic & Alpine Research 35(2): 196-202, 2003

Reconstructions of spring/ summer precipitation for the eastern Mediterranean from tree-ring widths and its connection to large-scale atmospheric circulation. Climate Dynamics 25(1): 75-98, 2005

Tree-ring and summer-temperature response to volcanic aerosol forcing at the northern tree-line, Kola Peninsula, Russia. Holocene 11(4): 499-505, 2001

Temperature reconstructions and comparisons with instrumental data from a tree-ring network for the European Alps. International Journal of Climatology 25(11): 1437-1454, 2005