On the role of antecedent meteorological conditions on flash drought initialization in Europe
Identifikátory výsledku
Kód výsledku v 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>
Výsledek na webu
<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>
Alternativní jazyky
Jazyk výsledku
angličtina
Název v původním jazyce
On the role of antecedent meteorological conditions on flash drought initialization in Europe
Popis výsledku v původním jazyce
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.
Název v anglickém jazyce
On the role of antecedent meteorological conditions on flash drought initialization in Europe
Popis výsledku anglicky
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.
Klasifikace
Druh
J<sub>imp</sub> - Článek v periodiku v databázi Web of Science
CEP obor
—
OECD FORD obor
10511 - Environmental sciences (social aspects to be 5.7)
Návaznosti výsledku
Projekt
<a href="/cs/project/GA23-08056S" target="_blank" >GA23-08056S: Sledování dynamiky vývoje suchých epizod a jejich klasifikace v globálním měřítku - DynamicDrought</a><br>
Návaznosti
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Ostatní
Rok uplatnění
2023
Kód důvěrnosti údajů
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Údaje specifické pro druh výsledku
Název periodika
Environmental Research Letters
ISSN
1748-9326
e-ISSN
1748-9326
Svazek periodika
18
Číslo periodika v rámci svazku
6
Stát vydavatele periodika
CZ - Česká republika
Počet stran výsledku
10
Strana od-do
1-11
Kód UT WoS článku
001005096200001
EID výsledku v databázi Scopus
2-s2.0-85162133055