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Reconstructed drought variability in east-central Sweden since the 1650s

Seftigen, Kristina and Linderholm, Hans W. and Drobyshev, Igor and Niklasson, Mats (2013). Reconstructed drought variability in east-central Sweden since the 1650s. International journal of climatology. 33:11, 2449-2458
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Abstract

In this study, we present the first regional reconstruction of summer drought for southeastern Sweden. The June-July standardized precipitation index (SPI) was reconstructed over the period 1650-2002 based on Pinus sylvestris L. tree-ring width data, where the reconstruction could account for 41.6% of the total variance in the instrumental record over 1901-2002. Our reconstruction suggests an overall wet 18th century and a dry 19th century. The most outstanding pluvial phase in the pre-instrumental period took place in the mid-1720s and lasted over 50 years, while multi-decadal periods of below average moisture conditions were reconstructed in the 1660s-1720s, 1800s-early 30s, and in the 1840s-50s. Several of these dry spells have previously been found in reconstructions from Sweden and Finland, indicating that our reconstruction reflects large-scale moisture anomalies across eastern Fennoscandia. Comparison of the SPI estimates with mid-tropospheric pressure patterns suggests that summertime drought is associated with positive pressure anomalies over British Isles and the North Sea, while an eastward movement of the Icelandic low-pressure systems over the western part of central Fennoscandia results in wetter than normal June-July conditions over the region of interest.

Authors/Creators:Seftigen, Kristina and Linderholm, Hans W. and Drobyshev, Igor and Niklasson, Mats
Title:Reconstructed drought variability in east-central Sweden since the 1650s
Series/Journal:International journal of climatology (1097-0088)
Year of publishing :2013
Volume:33
Number:11
Page range:2449-2458
Number of Pages:9
Publisher:Wiley
ISSN:1097-0088
Language:English
Additional Information:Embargoed until September 2015 due to publisher's policy.
Publication Type:Journal article
Refereed:Yes
Article category:Scientific peer reviewed
Version:Published version
Full Text Status:Public
Subjects:(A) Swedish standard research categories 2011 > 1 Natural sciences > 106 Biological Sciences (Medical to be 3 and Agricultural to be 4) > Ecology
(A) Swedish standard research categories 2011 > 1 Natural sciences > 106 Biological Sciences (Medical to be 3 and Agricultural to be 4) > Other Biological Topics
(A) Swedish standard research categories 2011 > 1 Natural sciences > 105 Earth and Related Environmental Sciences > Climate Research
(A) Swedish standard research categories 2011 > 1 Natural sciences > 105 Earth and Related Environmental Sciences > Meteorology and Atmospheric Sciences
Keywords:Climatology, History, Ecology, Meteorology
URN:NBN:urn:nbn:se:slu:epsilon-e-1947
Permanent URL:
http://urn.kb.se/resolve?urn=urn:nbn:se:slu:epsilon-e-1947
Additional ID:
Type of IDID
DOI10.1002/joc.3592
ID Code:11194
Faculty:S - Faculty of Forest Sciences
Department:(S) > Southern Swedish Forest Research Centre
Deposited By: SLUpub Connector
Deposited On:03 Jun 2014 11:46
Metadata Last Modified:01 Oct 2015 23:15

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