On the role of antecedent meteorological conditions on flash drought initialization in Europe

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60460709%3A41330%2F23%3A97228" target="_blank" >RIV/60460709:41330/23:97228 - isvavai.cz</a>

Result on the web

<a href="http://dx.doi.org/10.1088/1748-9326/acd8d3" target="_blank" >http://dx.doi.org/10.1088/1748-9326/acd8d3</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1088/1748-9326/acd8d3" target="_blank" >10.1088/1748-9326/acd8d3</a>

Result language

angličtina

Original language name

On the role of antecedent meteorological conditions on flash drought initialization in Europe

Original language description

The fast depletion of soil moisture in the top soil layers characterizes flash drought events. Due to their rapid onset and intensification, flash droughts severely impact ecosystem productivity. Thus understanding their initialization mechanisms is essential for improving the skill of drought forecasting systems. Here, we examine the role of antecedent meteorological conditions that lead to flash droughts across Europe over the last 70 years (1950-2019) using ERA5 dataset. We find two major flash-drought types based on a sequence of development of antecedent hydro-meteorological conditions. The first type is characterized by a joint occurrence of two mechanisms, a decline of precipitation in conjunction with an increase of the evaporative demand, both occurring before the onset of a flash drought event. The second type, on the contrary, is characterized by high precipitation preceding the event's start, followed by a sudden precipitation deficit combined with an increase in evaporative demand at the onset of the drought. Both drought types showed increased occurrence and higher spatial coverage over the last 70 years; the second drought type has increased at a much faster rate compared to the first one specifically, over Central Europe and the Mediterranean region. Overall our study highlights the differences between the two types of flash droughts, related to varying antecedent meteorological conditions, and their changes under recent climate warming.

Czech name

—

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

—

OECD FORD branch

10511 - Environmental sciences (social aspects to be 5.7)

Project

<a href="/en/project/GA23-08056S" target="_blank" >GA23-08056S: Dynamic tracking of drought events and their classification on the global scale - DynamicDrought</a><br>

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2023

Confidentiality

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

Name of the periodical

Environmental Research Letters

ISSN

1748-9326

e-ISSN

1748-9326

Volume of the periodical

18

Issue of the periodical within the volume

6

Country of publishing house

CZ - CZECH REPUBLIC

Number of pages

10

Pages from-to

1-11

UT code for WoS article

001005096200001

EID of the result in the Scopus database

2-s2.0-85162133055