Transitions between dry and wet periods in Europe during 1950–2019

0542956 - ÚFA 2022 DE eng A - Abstract
Bešťáková, Zuzana - Máca, P. - Kyselý, Jan - Singh, U. - Markonis, Y. - Hanel, M.
Transitions between dry and wet periods in Europe during 1950–2019.
EGU General Assembly 2021 (vEGU21: Gather Online). Göttingen: European Geosciences Union, 2021.
[EGU General Assembly Conference 2021. 19.04.2021-30.04.2021, online]
Institutional support: RVO:68378289
Keywords : precipitation * evapotranspiration * aridity index * climate change * trend analysis * Northern Europe * Central Europe
OECD category: Climatic research
https://meetingorganizer.copernicus.org/EGU21/EGU21-9951.html

The study deals with probabilities of transitions from arid to humid environment and vice versa in
Europe. Aridity index, defined as a ratio of potential evapotranspiration and precipitation and
representing the ratio between energy availability and water availability, is used to characterize
humid
(wet) and arid (dry) regions and allows us to study transitions between individual periods (wet-wet,
wet-dry, dry-dry, dry-wet). Three gridded datasets – CRU (UEA, 2020), E-OBS (ECAD, 2020) and ERA5
(ECMWF, 2020) – are used for this purpose. The aim of the study is to compare the three datasets
as
to transitions between wet and dry conditions, which are determined according to the aridity
index,
and evaluate the variability in Europe over 1950–2019. The changes in the aridity index since 1950
are
found to be most pronounced in Northern and Central Europe.
references:
ECAD, 2020: E-OBS gridded dataset, available from
<https://www.ecad.eu/download/ensembles/download.php>.
UEA, 2020: University of East Anglia – Climatic Research Unit, available from
<https://lr1.uea.ac.uk/cru/data>.
ECMWF, 2020: European Centre for Medium-Range Weather Forecasts – ERA5, available from
<https://www.ecmwf.int/en/forecasts/datasets/reanalysis-datasets/era5>.

Permanent Link: http://hdl.handle.net/11104/0320276