TEMPERATURE TRENDS IN SURFACE AND GROUNDWATERS IN SLOVENIA UP TO 2015
Abstract
Water temperature is one of the most important characteristics of water, and one of the key indicators of climate change impacts. An analysis of water temperature trends was conducted on the basis of long-term data sets gathered from gauging stations on surface waters, lakes, groundwater and the sea. The first part of the analysis comprised assessments of the adequacy of the data, the gauging stations, and the time series of data sets. Sixty-six stations were selected, of which 48 were located in surface waters (including two in lakes and one in the sea) and 18 in groundwater. Homogenisation of the data was carried out, which is essential for the elimination of measurement anomalies and extreme data deviations. The homogenisation periods were 1953-2015 for surface waters, lakes and the sea, and 1969-2015 for groundwater. An analysis of the linear trends and the statistical characteristics of the trends for the entire period was also carried out. The results of the analysis of average annual water temperature show upward trends, which are all statistically typical and in line with climate change analyses indicating global warming.
References
ARSO – Agencija RS za okolje, 2016: Projekt Ocena podnebnih sprememb v 21. stoletju. Interno gradivo. Ljubljana.
ARSO – Agencija RS za okolje, 2017: Baza hidroloških podatkov.
Baron, J. S., LeRoy Poff, N., Angermeier P. L., Dahm C. N., Gleick P. H., Hairston N. G., Jackson, R. B., Johnston, C. A., Richter B. D., Steinman A. D., 2003. Sustaining Healthy Freshwater Ecosystems. Issues in Ecology, Number 10, Winter 2003. Ecological Society of America. Watershed Academy Web, US Environmental Protection Agency. Medmrežje: http://www.epa.gov/watertrain (6/1/2005).
Draksler, A., 2016. Poročilo izvedbe 5. sklopa nalog v okviru »Homogenizacije podatkovnih nizov temperatur vode ter analize trendov na površinskih vodah, podzemnih vodah in morju«, interno poročilo. Agencija RS za okolje, Ljubljana.
Draksler, A., Frantar, P., Savić, V., Vertačnik, G., 2017. Trendi temperatur vode v Sloveniji. V: Drugi slovenski kongres o vodah 2017, zbornik, ur.: Globevnik L., Širca, A., str. 285–290. http://www.kongresvode2017.si/zbornik/zbornik_sklop_2.pdf (10/2/2018)
Essig, D. A., 1998. The dilemma of applying uniform temperature criteria in a diverse environment: an issue analysis. Idaho Division of Environmental Water Quality. Boise. Medmrež je: http://www.deq.ida– ho.gov/water/data_reports/surface_water/monitoring/temp_criteria_analysis.pdf (15. 5. 2008).
Frantar, P., 2004. Analiza temperaturnega režima in pojava ledu na Bohinjskem jezeru. Ujma 17–18. Ljubljana. http://www.sos112.si/slo/tdocs/ujma/2004/analiza.pdf
Frantar, P., 2012. Temperaturni režimi rek v Sloveniji v obdobju 1976–1990 in spremembe režimov v obdobju 1991–2005. V: Geografski vestnik 84–2, 2012, str. 11–28. http://zgs.zrc-sazu.si/Portals/8/Geografski_vestnik/gv_84-2_frantar.pdf.
Houghton, J. T., Ding, Y., Griggs, D. J., Noguer, M., van der Linden, P. J., Dai, X., Maskell, K., Johnson, C. A., 2001. Climate Change 2001: The Scientific Basis. Cambridge, Cambridge University Press. Povzeto po: http://www.grida.no/climate/ipcc_tar/ (21. 2. 2003)
Leize, C. L. R., Meredith, C. B., Dunbar, M. J., Hannah, D. M., 2017. Climate and basin drivers of seasonal river water temperature dynamics. Hydrol. Earth Syst. Sci., 21, 3231–3247, 2017. DOI: https://doi.org/10.5194/hess-21-3231-2017.
Richter, B. D., Baumgartner, J. V., Wigington, R., Braun, D. P., 1997. How much water does a river need? Freshwater Biology 37. Oxford. DOI: 10.1046/j.1365-2427.1997.00153.x
Rivers-Moore, N. A., Jewitt, G. P. W., 2004. Intra-annual thermal patterns in the main rivers of the Sabie Catchment, Mpumalanga, South Africa. Water SA 30. http://www.ajol.info/index.php/wsa/article/viewFile/5096/12686 (17. 3. 2009).
Vertačnik, G., Vičar, Z., Bertalanič R., 2015. Podnebna spremenljivost Slovenije v obdobju 1961–2011. 2. Kontrola in homogenizacija podnebnih podatkov. Ljubljana: Ministrstvo za okolje in prostor, Agencija RS za okolje.
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