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How are extreme temperatures changing in Sweden

Petersson, Jakob LU (2014) FYSK01 20141
Department of Physics
Combustion Physics
Abstract
Global mean temperature has been observed to increase over the last hundred years; this increase is coupled with a global increase of warm extreme indices and a decrease in cold extreme indices. In this study, daily observations of mean and extreme temperatures from ten different weather stations in Sweden during the time period 1961-2010 were analyzed. A warming trend was identified for every data series for all stations at a statistical significance of 99.95% (with one exception at 99.9%). The tendencies differ between the stations where some show a higher increase in mean temperature while others a higher increase in extreme temperatures; the different rate of change is concluded to depend on local and regional weather effects. Northern... (More)
Global mean temperature has been observed to increase over the last hundred years; this increase is coupled with a global increase of warm extreme indices and a decrease in cold extreme indices. In this study, daily observations of mean and extreme temperatures from ten different weather stations in Sweden during the time period 1961-2010 were analyzed. A warming trend was identified for every data series for all stations at a statistical significance of 99.95% (with one exception at 99.9%). The tendencies differ between the stations where some show a higher increase in mean temperature while others a higher increase in extreme temperatures; the different rate of change is concluded to depend on local and regional weather effects. Northern Sweden is compared to Southern Sweden and the stations in Northern Sweden show a higher warming in cold extreme temperatures (0.04°C/y on average) than in the warm extreme temperatures (0.028°C/y on average). In Southern Sweden there is a higher warming in the warm temperature extremes (0.037°C/y on average) compared to the cold temperature extremes (0.028°C/y on average). During the time period, the stations show an increase of the warm extreme temperatures of 0.8-2.3°C and 0.7-2.5°C for the cold extremes. (Less)
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author
Petersson, Jakob LU
supervisor
organization
course
FYSK01 20141
year
type
M2 - Bachelor Degree
subject
keywords
Change, Extreme, Temperature, Climate, Sweden, Global, Warming
language
English
id
4612586
date added to LUP
2014-09-18 10:02:58
date last changed
2014-10-22 09:59:52
@misc{4612586,
  abstract     = {{Global mean temperature has been observed to increase over the last hundred years; this increase is coupled with a global increase of warm extreme indices and a decrease in cold extreme indices. In this study, daily observations of mean and extreme temperatures from ten different weather stations in Sweden during the time period 1961-2010 were analyzed. A warming trend was identified for every data series for all stations at a statistical significance of 99.95% (with one exception at 99.9%). The tendencies differ between the stations where some show a higher increase in mean temperature while others a higher increase in extreme temperatures; the different rate of change is concluded to depend on local and regional weather effects. Northern Sweden is compared to Southern Sweden and the stations in Northern Sweden show a higher warming in cold extreme temperatures (0.04°C/y on average) than in the warm extreme temperatures (0.028°C/y on average). In Southern Sweden there is a higher warming in the warm temperature extremes (0.037°C/y on average) compared to the cold temperature extremes (0.028°C/y on average). During the time period, the stations show an increase of the warm extreme temperatures of 0.8-2.3°C and 0.7-2.5°C for the cold extremes.}},
  author       = {{Petersson, Jakob}},
  language     = {{eng}},
  note         = {{Student Paper}},
  title        = {{How are extreme temperatures changing in Sweden}},
  year         = {{2014}},
}