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Observed temperature evolution in the City of Sfax (Middle Eastern Tunisia) for the period 1950–2007

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  • S. Dahech

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  • G. Beltrando

Abstract

This paper studies temperature evolution in the city of Sfax (Middle Eastern Tunisia, with more than 600 000 people) from 1950 to 2007. Daily maximum and minimum temperatures recorded at Sfax observatory from 1950 to 2007 are analysed by studying their homogeneity, possible trends and their statistical significance. Linear regression, Student and Mann–Kendall trend test were applied to annual mean minimum and maximum temperature data to determine the existence and significance of trends. Using a number of statistical tests, it is found that the data measured at the surface station represent a non homogenous time-series. Furthermore, mean annual and monthly temperatures are evaluated and a statistically significant trend starting from year 1950 was found. Important increase of the surface temperature in the City of Sfax was found after 1984. The increase in the surface temperature in the city of Sfax is further associated with global, regional (e.g. Mediterranean area) and meso-scale temperature increase. In addition, the spatial pattern of surface temperature in the city of Sfax from 1982 to 2007 shows that the overall land surface temperature increased with the expansion of Urban Heat Island (UHI) from urban areas to suburban districts. Copyright Springer Science+Business Media B.V. 2012

Suggested Citation

  • S. Dahech & G. Beltrando, 2012. "Observed temperature evolution in the City of Sfax (Middle Eastern Tunisia) for the period 1950–2007," Climatic Change, Springer, vol. 114(3), pages 689-706, October.
  • Handle: RePEc:spr:climat:v:114:y:2012:i:3:p:689-706
    DOI: 10.1007/s10584-012-0420-x
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    File URL: http://hdl.handle.net/10.1007/s10584-012-0420-x
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    1. Henri Caussinus & Olivier Mestre, 2004. "Detection and correction of artificial shifts in climate series," Journal of the Royal Statistical Society Series C, Royal Statistical Society, vol. 53(3), pages 405-425.
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