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Changes in the compound drought and extreme heat occurrence in the 1961–2018 period at the European scale
ID Bezak, Nejc (Author), ID Mikoš, Matjaž (Author)

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Abstract
Compound extreme weather events can cause large economic damage and endanger human lives. Therefore, identification of changes in such compound event frequency and magnitude is important information that could be useful for decision makers and practitioners in water management and agriculture sector. This is especially the case for dry hazards that can be significantly influenced by the increasing air temperature and can have significant impact on water availability and consumption as well as on agricultural production. This study investigated changes in the compound occurrence of drought and extreme heat at the European scale using Uncertainties in Ensembles of Regional Reanalyses (UERRA) regional reanalysis data for the 1961–2018 period. The effective drought index (EDI) and the air temperature percentile threshold were used for the identification of the compound events at the catchment scale where entire Europe was divided into more than 4000 catchments. The results revealed multiple hotspots of compound drought and extreme heat events such as parts of Western Europe, Italy, Balkan Peninsula and Northern and Eastern Europe. At the continental scale, no uniform trend pattern could be detected. However, multiple areas with either positive or negative changes were identified. A positive change was characteristic for parts of Western Europe, Italy, Balkan Peninsula, etc. In these cases, the trend was mostly driven by the decreasing total precipitation trend and was not directly affected by the increasing air temperature trend. Areas with negative changes include parts of Northern and Eastern Europe and British Isles. In these cases, the detected trend was mostly driven by an increasing total precipitation trend. However, local drivers could be different.

Language:English
Keywords:hydrology, drought, extreme heat, compound occurrence, Europa, UERRA, change, trend
Work type:Article
Typology:1.01 - Original Scientific Article
Organization:FGG - Faculty of Civil and Geodetic Engineering
Publication status:Published
Publication version:Version of Record
Year:2020
Number of pages:13 str.
Numbering:Vol. 12, iss. 12, art. 3543
PID:20.500.12556/RUL-124727 This link opens in a new window
UDC:502/504:556
ISSN on article:2073-4441
DOI:10.3390/w12123543 This link opens in a new window
COBISS.SI-ID:43271683 This link opens in a new window
Publication date in RUL:13.02.2021
Views:630
Downloads:161
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Record is a part of a journal

Title:Water
Shortened title:Water
Publisher:Molecular Diversity Preservation International - MDPI
ISSN:2073-4441
COBISS.SI-ID:36731653 This link opens in a new window

Licences

License:CC BY 4.0, Creative Commons Attribution 4.0 International
Link:http://creativecommons.org/licenses/by/4.0/
Description:This is the standard Creative Commons license that gives others maximum freedom to do what they want with the work as long as they credit the author.
Licensing start date:16.12.2020

Secondary language

Language:Slovenian
Keywords:hidrologija, suša, ekstremna vročina, sočasno pojavljanje, Evropa, UERRA, spremembe, trendi

Projects

Funder:ARRS - Slovenian Research Agency
Project number:P2-0180
Name:Vodarstvo in geotehnika

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