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THE EVALUATION OF GLOBAL WARMING’S EFFECTS ON SOIL TEMPERATURE OF TURKEY BY 3.5D GEOGRAPHYCAL INFORMATION SYSTEM MODELS

AUTHOR/S: O. CORUMLUOGLU, M. E. AYDIN, I. ASRI, S. OZCAN, F. BEDUK
Sunday 1 August 2010 by Libadmin2010

10th International Multidisciplinary Scientific GeoConference - SGEM2010, www.sgem.org, SGEM2010 Conference Proceedings/ ISBN 10: 954-91818-1-2, June 20-26, 2010, Vol. 2, 285-292 pp

ABSTRACT

In this study, global warming’s effects on soil temperature of Turkey was evaluated by
analysis of the spatial and temporal variations of the soil temperature data with the help
of 3.5D Geographical Information System (GIS) Models. Soil temperature data in 5 cm,
10 cm, 20 cm, 50 cm and 100 cm depths in 74 city centers since 1975 were used. These
data were compared with 34 years mean temperature of each city and deviations were
shown by using GIS on the map. It is determined that soil temperature values in Turkey
have risen about +4 oC in all months since 1998 except November, December and
January. In deeper soil parts, temperature changes are not evident in the models. Data of
5 cm depth soil temperature in the periods of February and November 1977, April 1989,
March 2001, January, March, April, July and August 2008 show an upward trend up to
5 oC in whole country. Semi-arid lands of Turkey are quite susceptible to temperature
increases. As a result of global warming, higher temperature and lower precipitation
cause higher soil temperatures in the region and this trouble results with reduction in
crop quantity and quality.

Keywords: Global warming; soil temperature; drought; GIS, 3.5D Model; Turkey