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A new climate era in the sub-Arctic: Accelerating climate changes and multiple impacts

Callaghan, Terry V.; Bergholm, Fredrik; Christensen, Torben LU ; Jonasson, Christer; Kokfelt, Ulla LU and Johansson, Margareta LU (2010) In Geophysical Research Letters 37. p.14705-14705
Abstract
Climate warming in the Swedish sub-Arctic since 2000 has reached a level at which statistical analysis shows for the first time that current warming has exceeded that in the late 1930' s and early 1940' s, and has significantly crossed the 0 degrees C mean annual temperature threshold which causes many cryospheric and ecological impacts. The accelerating temperature increase trend has driven similar trends in the century-long increase in snow thickness, loss of lake ice, increases in active layer thickness, lake water TOC (total organic carbon) concentrations and the assemblages of diatoms, and changes in tree-line location and plant community structure. Some of these impacts were not evident in the first warm period of the 20th Century.... (More)
Climate warming in the Swedish sub-Arctic since 2000 has reached a level at which statistical analysis shows for the first time that current warming has exceeded that in the late 1930' s and early 1940' s, and has significantly crossed the 0 degrees C mean annual temperature threshold which causes many cryospheric and ecological impacts. The accelerating temperature increase trend has driven similar trends in the century-long increase in snow thickness, loss of lake ice, increases in active layer thickness, lake water TOC (total organic carbon) concentrations and the assemblages of diatoms, and changes in tree-line location and plant community structure. Some of these impacts were not evident in the first warm period of the 20th Century. Changes in climate are associated with reduced temperature variability, particularly loss of cold winters and cool summers, and an increase in extreme precipitation events that cause mountain slope instability and infrastructure failure. The long term records of multiple, local environmental factors compiled here for the first time provide detailed information for adaptation strategy development while dramatic changes in an environment particularly vulnerable to climate change highlight the need to adopt global mitigation strategies. Citation: Callaghan, T. V., F. Bergholm, T. R. Christensen, C. Jonasson, U. Kokfelt, and M. Johansson (2010), A new climate era in the sub-Arctic: Accelerating climate changes and multiple impacts, Geophys. Res. Lett., 37, L14705, doi:10.1029/2009GL042064. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Geophysical Research Letters
volume
37
pages
14705 - 14705
publisher
American Geophysical Union
external identifiers
  • wos:000280584900001
  • scopus:77955284559
ISSN
1944-8007
DOI
10.1029/2009GL042064
project
MERGE
BECC
language
English
LU publication?
yes
id
f3161954-c102-4756-9454-1ae1da0c92d3 (old id 1678300)
date added to LUP
2010-09-21 10:01:16
date last changed
2018-07-15 03:41:33
@article{f3161954-c102-4756-9454-1ae1da0c92d3,
  abstract     = {Climate warming in the Swedish sub-Arctic since 2000 has reached a level at which statistical analysis shows for the first time that current warming has exceeded that in the late 1930' s and early 1940' s, and has significantly crossed the 0 degrees C mean annual temperature threshold which causes many cryospheric and ecological impacts. The accelerating temperature increase trend has driven similar trends in the century-long increase in snow thickness, loss of lake ice, increases in active layer thickness, lake water TOC (total organic carbon) concentrations and the assemblages of diatoms, and changes in tree-line location and plant community structure. Some of these impacts were not evident in the first warm period of the 20th Century. Changes in climate are associated with reduced temperature variability, particularly loss of cold winters and cool summers, and an increase in extreme precipitation events that cause mountain slope instability and infrastructure failure. The long term records of multiple, local environmental factors compiled here for the first time provide detailed information for adaptation strategy development while dramatic changes in an environment particularly vulnerable to climate change highlight the need to adopt global mitigation strategies. Citation: Callaghan, T. V., F. Bergholm, T. R. Christensen, C. Jonasson, U. Kokfelt, and M. Johansson (2010), A new climate era in the sub-Arctic: Accelerating climate changes and multiple impacts, Geophys. Res. Lett., 37, L14705, doi:10.1029/2009GL042064.},
  author       = {Callaghan, Terry V. and Bergholm, Fredrik and Christensen, Torben and Jonasson, Christer and Kokfelt, Ulla and Johansson, Margareta},
  issn         = {1944-8007},
  language     = {eng},
  pages        = {14705--14705},
  publisher    = {American Geophysical Union},
  series       = {Geophysical Research Letters},
  title        = {A new climate era in the sub-Arctic: Accelerating climate changes and multiple impacts},
  url          = {http://dx.doi.org/10.1029/2009GL042064},
  volume       = {37},
  year         = {2010},
}