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@article{2346658,
author = {Řehoř, Jan and Trnka, Miroslav and Brázdil, Rudolf and Fischer, Milan and Balek, Jan and van der Schrier, Gerard and Feng, Song},
article_number = {1},
doi = {http://dx.doi.org/10.1088/1748-9326/ad0f01},
keywords = {soil drought; soil moisture; SoilClim model; ERA5-land reanalysis; spatiotemporal variability; climate change},
language = {eng},
issn = {1748-9326},
journal = {Environmental Research Letters},
title = {Global hotspots in soil moisture-based drought trends},
url = {https://doi.org/10.1088/1748-9326/ad0f01},
volume = {19},
year = {2024}
}
TY - JOUR
ID - 2346658
AU - Řehoř, Jan - Trnka, Miroslav - Brázdil, Rudolf - Fischer, Milan - Balek, Jan - van der Schrier, Gerard - Feng, Song
PY - 2024
TI - Global hotspots in soil moisture-based drought trends
JF - Environmental Research Letters
VL - 19
IS - 1
SP - 1-10
EP - 1-10
PB - IOP Publishing Ltd
SN - 17489326
KW - soil drought
KW - soil moisture
KW - SoilClim model
KW - ERA5-land reanalysis
KW - spatiotemporal variability
KW - climate change
UR - https://doi.org/10.1088/1748-9326/ad0f01
N2 - Decreasing soil moisture and increasing frequency and intensity of soil drought episodes are among the frequently discussed consequences of ongoing global climate change. To address this topic, a water balance model SoilClim forced by climate reanalysis ERA5-Land was applied on a global scale to analyze the spatiotemporal variability of changes in soil moisture anomalies. The results revealed that the soil relative available water (AWR) significantly decreased on 31.1% of global non-glaciated land and significantly increased on 5.3% of such global non-glaciated land in 1981–2021. Decreasing AWR trends were detected over all continents and were particularly pronounced in South America, which experienced significant drying on more than half of the continent. The main drought 'hotspots' were identified in equatorial Africa, a large part of South America, the Midwest United States, and in a belt extending from eastern Europe to eastern Asia. A seasonal analysis of region-specific patterns further suggested drying in Europe in summer but an absence of a drying trend in winter. These results were supported by an analysis of the area affected by percentile-based drought on individual continents, revealing statistically significant increasing trends of 5th- and 10th-percentile droughts on all continents except Australia at an annual scale. Nevertheless, summer and autumn drought frequency increases were also detected in Australia. The seasonal trends were the most rapid in South America and Europe (except in winter). The distributions of AWR values, evaluated by Z scores, shifted remarkably toward drier conditions during the 2001–2021 period, particularly in South America and Asia. These results underscore the alarming increase in soil drought on a global scale, highlighting the need for effective drought management strategies.
ER -
ŘEHOŘ, Jan, Miroslav TRNKA, Rudolf BRÁZDIL, Milan FISCHER, Jan BALEK, Gerard VAN DER SCHRIER a Song FENG. Global hotspots in soil moisture-based drought trends. \textit{Environmental Research Letters}. IOP Publishing Ltd, 2024, roč.~19, č.~1, s.~1-10. ISSN~1748-9326. Dostupné z: https://dx.doi.org/10.1088/1748-9326/ad0f01.
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