Drivers of soil drying in the Czech Republic between 1961 and 2012

0433406 - ÚFA 2016 RIV GB eng J - Článek v odborném periodiku
Trnka, M. - Brázdil, R. - Balek, J. - Semerádová, D. - Hlavinka, P. - Možný, M. - Štepánek, P. - Dobrovolný, P. - Zahradníček, P. - Dubrovský, Martin - Eitzinger, J. - Fuchs, B. - Svoboda, M. - Hayes, M. - Žalud, Z.
Drivers of soil drying in the Czech Republic between 1961 and 2012.
International Journal of Climatology. Roč. 35, č. 9 (2015), s. 2664-2675. ISSN 0899-8418. E-ISSN 1097-0088
Institucionální podpora: RVO:68378289
Klíčová slova: pan evaporation * soil moisture * reference evapotranspiration * drought climatology * water balance * observed climate change
Obor OECD: Climatic research
Impakt faktor: 3.609, rok: 2015
http://onlinelibrary.wiley.com/doi/10.1002/joc.4167/abstract

Soil moisture dynamics and their temporal trends in the Czech Republic are forced by various drivers. The methodology of applying remotely sensed data with both high temporal and spatial resolutions provides detailed insight and objective quantification of the causes of changes in soil moisture patterns. Our analysis of temporal trends indicates that shifts in drought severity between 1961 and 2012 (especially in the April, May, and June period, which displayed a 50% increase in drought probability between 1961–1980 and 2001–2012) are alarming. We found that increased global radiation and air temperature together with decreased relative humidity (all statistically significant at the 0.05 level) led to increases in the reference evapotranspiration in all months of the growing season; this trend was particularly evident in April, May, and August, when more than 80% of the territory displayed an increased demand for soil water. This finding was shown to be consistent with the measured pan evaporation (1968–2012) that was characterized by increasing trends, particularly during the April–June period.
Trvalý link: http://hdl.handle.net/11104/0239404