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Drivers of soil moisture trends in the Czech Republic between 1961 and 2012
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SYSNO ASEP 0464337 Document Type C - Proceedings Paper (int. conf.) R&D Document Type Conference Paper Title Drivers of soil moisture trends in the Czech Republic between 1961 and 2012 Author(s) Trnka, M. (CZ)
Brázdil, R. (CZ)
Balek, J. (CZ)
Semerádová, D. (CZ)
Hlavinka, P. (CZ)
Možný, M. (CZ)
Štěpánek, P. (CZ)
Dobrovolný, P. (CZ)
Zahradníček, P. (CZ)
Dubrovský, Martin (UFA-U) RID, ORCID
Eitzinger, J. (CZ)
Fuchs, B. (US)
Svoboda, M. (US)
Hayes, M. (US)
Žalud, Z. (CZ)Number of authors 15 Source Title Global Change: A Complex Challenge : Conference Proceedings. - Brno : Global Change Research Centre, The Czech Academy of Sciences, v. v. i., 2015 / Urban Otmar ; Šprtová Mirka ; Klem Karel - ISBN 978-80-87902-10-3 Pages s. 34-37 Number of pages 4 s. Publication form Print - P Action Global Change: A Complex Challenge /4th/ Event date 23.03.2015-24.03.2015 VEvent location Brno Country CZ - Czech Republic Event type WRD Language eng - English Country CZ - Czech Republic Keywords soil moisture ; Czech Republic ; climate change Subject RIV DG - Athmosphere Sciences, Meteorology OECD category Meteorology and atmospheric sciences Institutional support UFA-U - RVO:68378289 UT WOS 000381161600007 Annotation Soil moisture dynamics and their temporal trends in the Czech Republic are forced by various drivers. Our analysis of temporal trends indicates that shifts in drought severity between 1961 and 2012 and especially in the April, May, and June period, which displayed such results as a 50% increase in drought probability during 1961–1980 in comparison to 2001–2012. We found that increased global radiation and air temperature together with decreased relative humidity (all statistically significant at p < 0.05) 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. These changes, in combination with the earlier end of snow cover and the earlier start of the growing season (up to 20 days in some regions), led to increased actual evapotranspiration at the start of the growing season that tended to deplete the soil moisture earlier, leaving the soil more exposed to the impacts of rainfall variability. These results support concerns related to the potentially increased severity of drought events in Central Europe. The reported trend patterns are of particular importance with respect to expected climate change, given the robustness and consistency of the trends shown and the fact that they can be aligned with the existing climate model projections. Introduction Workplace Institute of Atmospheric Physics Contact Kateřina Adamovičová, adamovicova@ufa.cas.cz, Tel.: 272 016 012 ; Kateřina Potužníková, kaca@ufa.cas.cz, Tel.: 272 016 019 Year of Publishing 2017
Number of the records: 1