Flash droughts in Central Europe and their circulation drivers

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F86652079%3A_____%2F24%3A00577267" target="_blank" >RIV/86652079:_____/24:00577267 - isvavai.cz</a>

Alternative codes found

RIV/00216224:14310/24:00135206 RIV/62156489:43210/24:43924056

Result on the web

<a href="https://link.springer.com/article/10.1007/s00382-023-06964-8" target="_blank" >https://link.springer.com/article/10.1007/s00382-023-06964-8</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1007/s00382-023-06964-8" target="_blank" >10.1007/s00382-023-06964-8</a>

Result language

angličtina

Original language name

Flash droughts in Central Europe and their circulation drivers

Original language description

Flash droughts, defined as events with unusually rapid onset and intensification, are emerging into the spotlight as dangerous subseasonal climatic phenomena capable of causing substantial socioenvironmental impacts. However, research on their spatiotemporal variability and major drivers in Central Europe has been limited thus far. This study used gridded soil moisture data from the SoilClim model for the region consisting of the Czech Republic, Slovakia and northern part of Austria in the 1961-2021 period. Established methods of flash drought detection were implemented and adapted to conduct their comprehensive spatiotemporal analysis. The gridded flash drought results were divided into four clusters using the Ward's hierarchical agglomerative method. Individual flash drought episodes were delimited for each cluster, divided into three phases (onset, course, end) and investigated separately in terms of drivers, represented by three meteorological variables (precipitation, actual evapotranspiration, maximum temperature) and atmospheric circulation types based on the objective classification (derived from flow strength, direction and vorticity). The frequency of flash droughts slightly decreased in the winter half-year and slightly increased in the summer half-year, with substantial amplification in the April-June season. The increase was slower than in the case of seasonal droughts, being driven by the longer-term accumulation of water deficit. Circulation drivers exhibited much stronger and more direct influence in the summer half-year, particularly causing the onset of flash drought episodes during the predominance of anticyclonic types and absence of cyclonic types, while the course of flash drought episodes was also connected to increased temperatures and often connected to warm airflow.

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

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OECD FORD branch

10510 - Climatic research

Project

<a href="/en/project/EF16_019%2F0000797" target="_blank" >EF16_019/0000797: SustES - Adaptation strategies for sustainable ecosystem services and food security under adverse environmental conditions</a><br>

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2024

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Climate Dynamics

ISSN

0930-7575

e-ISSN

1432-0894

Volume of the periodical

62

Issue of the periodical within the volume

2

Country of publishing house

DE - GERMANY

Number of pages

15

Pages from-to

1107-1121

UT code for WoS article

001072227100001

EID of the result in the Scopus database

2-s2.0-85172797038