An assessment of actual evapotranspiration and soil water deficit in agricultural regions in Europe
Changes in agricultural droughts were investigated using simulations of soil water deficit (SWD) and actual evapotranspiration (ETA) from a distributed semi-empirical soil water balance model – swbEWA. At European scale, both SWD and ETA did not change significantly between 1951 and 2011. However, s...
Published in: | International Journal of Climatology |
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ftcopenhagenunip:oai:pure.atira.dk:publications/bf952a20-c3f1-4a2a-887a-f60be613f8de 2023-05-15T17:29:41+02:00 An assessment of actual evapotranspiration and soil water deficit in agricultural regions in Europe Kurnik, Blaž Kajfež-Bogataj, Lučka Horion, Stéphanie Marie Anne F 2015 https://curis.ku.dk/portal/da/publications/an-assessment-of-actual-evapotranspiration-and-soil-water-deficit-in-agricultural-regions-in-europe(bf952a20-c3f1-4a2a-887a-f60be613f8de).html https://doi.org/10.1002/joc.4154 eng eng info:eu-repo/semantics/closedAccess Kurnik , B , Kajfež-Bogataj , L & Horion , S M A F 2015 , ' An assessment of actual evapotranspiration and soil water deficit in agricultural regions in Europe ' , International Journal of Climatology , vol. 35 , no. 9 , pp. 2451–2471 . https://doi.org/10.1002/joc.4154 article 2015 ftcopenhagenunip https://doi.org/10.1002/joc.4154 2022-02-24T00:19:26Z Changes in agricultural droughts were investigated using simulations of soil water deficit (SWD) and actual evapotranspiration (ETA) from a distributed semi-empirical soil water balance model – swbEWA. At European scale, both SWD and ETA did not change significantly between 1951 and 2011. However, significant increases in SWD were found in southern Europe, except in western Turkey, whereas in northern Europe changes in SWD remain small. ETA increased significantly as a joint response to increased air temperature and precipitation in northern Europe. Using the Empirical Orthogonal Function (EOF) analysis and the Pearson correlation coefficients (RPearson), we showed that large-scale agricultural droughts are influenced by the recurrence of the North Atlantic Oscillation (NAO) and by the atmospheric blocking. Atmospheric blocking in different months throughout the year and extreme NAO index (mainly in winter months) contribute to the severity of agricultural droughts. During a negative phase of NAO, storms over the North Atlantic and Europe are less frequent and as a consequence dry weather in Europe is observed. Positive NAO influences agricultural drought in Europe by shifting storms tracks from the North Atlantic onto European continent to more northerly paths, which in turn decreases the amount of precipitation over central Europe. Large SWDs are mainly influenced by atmospheric blocking. Notably, winter blocking increases severity of agricultural droughts in southwestern Europe, while summer blocking influences agricultural droughts in southeastern Europe. Notwithstanding, the first three EOFs contribute to less than 40% of the total spatial variability of SWD. This shows that agricultural droughts are complex phenomena that can be only partly explained by extreme NAO or by intensive atmospheric blocking. Article in Journal/Newspaper North Atlantic North Atlantic oscillation University of Copenhagen: Research Eta ENVELOPE(-62.917,-62.917,-64.300,-64.300) International Journal of Climatology 35 9 2451 2471 |
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Open Polar |
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University of Copenhagen: Research |
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ftcopenhagenunip |
language |
English |
description |
Changes in agricultural droughts were investigated using simulations of soil water deficit (SWD) and actual evapotranspiration (ETA) from a distributed semi-empirical soil water balance model – swbEWA. At European scale, both SWD and ETA did not change significantly between 1951 and 2011. However, significant increases in SWD were found in southern Europe, except in western Turkey, whereas in northern Europe changes in SWD remain small. ETA increased significantly as a joint response to increased air temperature and precipitation in northern Europe. Using the Empirical Orthogonal Function (EOF) analysis and the Pearson correlation coefficients (RPearson), we showed that large-scale agricultural droughts are influenced by the recurrence of the North Atlantic Oscillation (NAO) and by the atmospheric blocking. Atmospheric blocking in different months throughout the year and extreme NAO index (mainly in winter months) contribute to the severity of agricultural droughts. During a negative phase of NAO, storms over the North Atlantic and Europe are less frequent and as a consequence dry weather in Europe is observed. Positive NAO influences agricultural drought in Europe by shifting storms tracks from the North Atlantic onto European continent to more northerly paths, which in turn decreases the amount of precipitation over central Europe. Large SWDs are mainly influenced by atmospheric blocking. Notably, winter blocking increases severity of agricultural droughts in southwestern Europe, while summer blocking influences agricultural droughts in southeastern Europe. Notwithstanding, the first three EOFs contribute to less than 40% of the total spatial variability of SWD. This shows that agricultural droughts are complex phenomena that can be only partly explained by extreme NAO or by intensive atmospheric blocking. |
format |
Article in Journal/Newspaper |
author |
Kurnik, Blaž Kajfež-Bogataj, Lučka Horion, Stéphanie Marie Anne F |
spellingShingle |
Kurnik, Blaž Kajfež-Bogataj, Lučka Horion, Stéphanie Marie Anne F An assessment of actual evapotranspiration and soil water deficit in agricultural regions in Europe |
author_facet |
Kurnik, Blaž Kajfež-Bogataj, Lučka Horion, Stéphanie Marie Anne F |
author_sort |
Kurnik, Blaž |
title |
An assessment of actual evapotranspiration and soil water deficit in agricultural regions in Europe |
title_short |
An assessment of actual evapotranspiration and soil water deficit in agricultural regions in Europe |
title_full |
An assessment of actual evapotranspiration and soil water deficit in agricultural regions in Europe |
title_fullStr |
An assessment of actual evapotranspiration and soil water deficit in agricultural regions in Europe |
title_full_unstemmed |
An assessment of actual evapotranspiration and soil water deficit in agricultural regions in Europe |
title_sort |
assessment of actual evapotranspiration and soil water deficit in agricultural regions in europe |
publishDate |
2015 |
url |
https://curis.ku.dk/portal/da/publications/an-assessment-of-actual-evapotranspiration-and-soil-water-deficit-in-agricultural-regions-in-europe(bf952a20-c3f1-4a2a-887a-f60be613f8de).html https://doi.org/10.1002/joc.4154 |
long_lat |
ENVELOPE(-62.917,-62.917,-64.300,-64.300) |
geographic |
Eta |
geographic_facet |
Eta |
genre |
North Atlantic North Atlantic oscillation |
genre_facet |
North Atlantic North Atlantic oscillation |
op_source |
Kurnik , B , Kajfež-Bogataj , L & Horion , S M A F 2015 , ' An assessment of actual evapotranspiration and soil water deficit in agricultural regions in Europe ' , International Journal of Climatology , vol. 35 , no. 9 , pp. 2451–2471 . https://doi.org/10.1002/joc.4154 |
op_rights |
info:eu-repo/semantics/closedAccess |
op_doi |
https://doi.org/10.1002/joc.4154 |
container_title |
International Journal of Climatology |
container_volume |
35 |
container_issue |
9 |
container_start_page |
2451 |
op_container_end_page |
2471 |
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1766124466999394304 |