EXTREME MAXIMUM AND MINIMUM AIR TEMPERATURE IN MEDİTERRANEAN COASTS IN TURKEY
Abstract
In this study, we determined extreme maximum and minimum temperatures in both summer and winter seasons at the stations in the Mediterranean coastal areas of Turkey.
In the study, the data of 24 meteorological stations for the daily maximum and minimum
temperatures of the period from 1970–2010 were used. From this database, a set of four extreme temperature indices applied warm (TX90) and cold (TN10) days and warm spells (WSDI) and cold spell duration (CSDI). The threshold values were calculated for each station to determine the temperatures that were above and below the seasonal norms in winter and summer. The TX90 index displays a positive statistically significant trend, while TN10 display negative nonsignificant trend. The occurrence of warm spells shows statistically significant increasing trend while the cold spells shows significantly decreasing trend over the Mediterranean coastline in Turkey.
In the study, the data of 24 meteorological stations for the daily maximum and minimum
temperatures of the period from 1970–2010 were used. From this database, a set of four extreme temperature indices applied warm (TX90) and cold (TN10) days and warm spells (WSDI) and cold spell duration (CSDI). The threshold values were calculated for each station to determine the temperatures that were above and below the seasonal norms in winter and summer. The TX90 index displays a positive statistically significant trend, while TN10 display negative nonsignificant trend. The occurrence of warm spells shows statistically significant increasing trend while the cold spells shows significantly decreasing trend over the Mediterranean coastline in Turkey.
About the Authors
Barbaros Gönençgil
İstanbul University
Turkey
Faculty of Letters, Department of Geography
Turkey
Faculty of Letters, Department of Geography
Zahide Acar Deniz
Çanakkale Onsekiz Mart University
Turkey
Faculty of Arts and Sciences, Department of Geography
Turkey
Faculty of Arts and Sciences, Department of Geography
References
1. Acar Deniz, Z. (2013). Influences of The monsoon circulation in summer temperatures of the Eastern Mediterranean and Turkey. Canakkale Onsekiz Mart University, Graduate School of Social Sciences, Unpublished PhD Thesis, Canakkale, Turkey.
2. Acar Deniz, Z., Gonencgil, B. (2015). Trends of summer daily maximum temperature extremes in Turkey. Physical Geography, Vol. 36, No. 4, 268–281.
3. Alexander, L.V., Zhang, X., Peterson T.C., Caeser, J., Gleason, B., Klein Tank, AMG., Haylock, M., Collins, D., Trewin, B., Rahimzadeg, F., Tagipour, A., Rupa Kumar, K., Revadekar, J., Griffiths, G., Vincent, L., Stephenson, D.B., Burn, J., Aguilar, E., Brunet, M., Taylor, M., New, M., Zhai, P., Rusticucci, M., Vazquez-Aguirre, J.L. (2006). Global observed changes in daily climate extremes of temperature and precipitation. Journal of Geophysical Research, 111: D05109, doi: 10.1029/2005JD006290
4. Baldi, M., Dalu, G., Maracchi, G., Pasqui, I., & Cesarone, F. (2006). Heat waves in the Mediterranean: a local feature or o larger-scale effect? International Journal of Climatology, 26: 1477–1487.
5. Barripedro, D., Fischer, E.M., Luterbacher, J., Trigo, R.M., Garcia-Herrera, R. (2011). The hot summer of 2010: Redrawing the temperature record map of Europe. Science, 332: 220–224.
6. Beniston, M., Diaz, H.F. (2004). The 2003 heat wave as an example of summers in a greenhouse climate? Observations and climate model simulations for Baseli Switzerland. Global Planetary Change, 44: 73–81.
7. Beniston, M., Stephenson, D.B., Christensen, O.B., Ferro, C.A.T., Frei, C., Goyette, S., et al. (2007). Future extreme events in European climate: an exploration of regional climate model projections, Climate Change, 81: 71–95.
8. Busuioc, A., Dumitrescu, A., Soare, E.,Orzan, A. (2007). Summer anomalies in 2007 in the context of extremely hot and dry summers in Romania, Romania Journal of Meteorology, 9: 1–17.
9. Frich, P., Alexander, L.V., Della-Marta, P., Gleason, B., Haylock, M., Klein Tank, A.M. G., Peterson
10. T. (2002). Observed coherent changes in climatic extremes during the second half of the twentieth century, Clim. Res., 19, 193–212.
11. Hertig, E., Seubert, S., Jaccobeit, J. (2010). Temperature extremes in the Mediterranean area: trends in the past and assessments for the future. Natural Hazards and Earth System Sciences, 10: 2039–2050.
12. Klein Tank, A.M.G., Konnen, G.P. (2003). Trends in indices of daily temperature and precipitation extremes in Europe 1946–99. Journal of Climate, 16: 3665–3680.
13. Kendall M.G. (1975). Rank correlation methods. Charles Griffin: London.
14. Kostopoulou, E., & Jones, P.D. (2005). Assessment of climate extremes in the eastern Mediterranean. Meteorology and Atmospheric Physics. 89: 69–85.
15. Kukla, G.J., Angell, J.K., Korshover, J., Dronia, H., Hoshiai, M., Namias, J., Rodewald, M., Yamamoto, R. and Iwsahima, T. (1977). New data on climatic trends, Nature 270, 573–580.
16. Luterbacher, J., Dietrich, D., Xoplaki, E., Grosjean, M., Wanner, H. (2004). European Seasonal and Annual Temperature Variability, Trends, and Extremes Since 1500, SCIENCE, 303: 1499–1503.
17. Mann H.B. (1945). Nonparametric tests against trend. Econometrica, 13: 245–259.
18. Parry ML (ed.) (2000) Assessment of potential effects and adaptations for climate change in Europe: The Europe ACACIA Project. Norwich: Jackson Environment Institute, University of East Anglia, 320 pp.
19. Perkins, S.E., Alexander, L.V., Nairn, J.R. (2012). Increasing frequency, intensity and duration of observed global heatwaves and warm spells. Geophysical Research Letters, 39: L20714, DOI: 10.1029/2012GL053361.
20. Rohli, R.V., Vega, A.J. (2012). Climatology. Jones & Bartlett Learning LLC, 2th edition, ISBN 978-0-7637-9101-8.
21. Unkasevic, M., Tosic, I. (2013). Trends in temperature indices over Serbia: relationships to large-scale circulation patterns. International Journal of Climatology, 33: 3152–3161.
22. Unkasevic, M., Tosic, I. (2009). An analysis of heat waves in Serbia. Global and Planetary Change, 65: 17–26.
23. Unal, Y.S., Tan, E., Menteş, S. (2012). Summer heatwave over western Turkey between 1965 and 2006. Theoretical and Applied Climatology, 2012, DOI 10.1007/s00704-012-0704-0.
24. Schar, C., Vidale, P.L., Luthi, D., Frei, C., Haberli, C., Liniger, & M., Appenzeller, C., (2004). The role of increasing temperature variability in European summer heatwaves. Nature: 427, 332–336.
25. Watson R.T., Zinyowera R.H., Moss H. (1997). The regional impacts of climate change: an assessment of vulnerability. IPCC Spec Rep Working Group II. Cambridge University Press, UK.
Review
For citation:
Gönençgil B., Deniz Z.A. EXTREME MAXIMUM AND MINIMUM AIR TEMPERATURE IN MEDİTERRANEAN COASTS IN TURKEY. GEOGRAPHY, ENVIRONMENT, SUSTAINABILITY. 2016;9(1):59-70. https://doi.org/10.15356/2071-9388_01v09_2016_05
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