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@article{1315992,
author = {Trnka, Miroslav and Brázdil, Rudolf and Balek, J. and Semeradova, D. and Hlavinka, P. and Možný, M. and Štěpánek, Petr and Dobrovolný, Petr and Zahradníček, Pavel and Dubrovsky, M. and Eitzinger, Josef and Fuchs, B. and Svoboda, M. and Hayes, M. and Žalud, Zdeněk},
article_location = {HOBOKEN},
article_number = {9},
doi = {http://dx.doi.org/10.1002/joc.4167},
keywords = {pan evaporation; soil moisture; reference evapotranspiration; drought climatology; water balance; observed climate change},
language = {eng},
issn = {0899-8418},
journal = {International Journal of Climatology},
title = {Drivers of soil drying in the Czech Republic between 1961 and 2012},
volume = {35},
year = {2015}
}
TY - JOUR
ID - 1315992
AU - Trnka, Miroslav - Brázdil, Rudolf - Balek, J. - Semeradova, D. - Hlavinka, P. - Možný, M. - Štěpánek, Petr - Dobrovolný, Petr - Zahradníček, Pavel - Dubrovsky, M. - Eitzinger, Josef - Fuchs, B. - Svoboda, M. - Hayes, M. - Žalud, Zdeněk
PY - 2015
TI - Drivers of soil drying in the Czech Republic between 1961 and 2012
JF - International Journal of Climatology
VL - 35
IS - 9
SP - 2664-2675
EP - 2664-2675
PB - Wiley
SN - 08998418
KW - pan evaporation
KW - soil moisture
KW - reference evapotranspiration
KW - drought climatology
KW - water balance
KW - observed climate change
N2 - 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. These changes, in combination with the earlier end of snow cover and the earlier start of growing season (up to 20days in some regions), led to an increased actual evapotranspiration at the start of growing season that tends 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 the 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.
ER -
TRNKA, Miroslav, Rudolf BRÁZDIL, J. BALEK, D. SEMERADOVA, P. HLAVINKA, M. MOŽNÝ, Petr ŠTĚPÁNEK, Petr DOBROVOLNÝ, Pavel ZAHRADNÍČEK, M. DUBROVSKY, Josef EITZINGER, B. FUCHS, M. SVOBODA, M. HAYES a Zdeněk ŽALUD. Drivers of soil drying in the Czech Republic between 1961 and 2012. \textit{International Journal of Climatology}. HOBOKEN: Wiley, 2015, roč.~35, č.~9, s.~2664-2675. ISSN~0899-8418. Dostupné z: https://dx.doi.org/10.1002/joc.4167.
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