Extreme rainfall events in Morocco: Spatial dependence and climate drivers
The history of Morocco is replete with tragic natural disasters related to floods that led to numerous casualties and significant material losses. An important driver of these floods is extreme precipitation. Understanding the spatial characteristics of extreme precipitation events is critical to ac...
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ftunivbern:oai:boris.unibe.ch:183214 2023-08-20T04:06:56+02:00 Extreme rainfall events in Morocco: Spatial dependence and climate drivers Chaqdid, Abdelaziz Tuel, Alexandre El Fatimy, Abdelouahad El Moçayd, Nabil 2023-03-16 application/pdf https://boris.unibe.ch/183214/1/1-s2.0-S2212094723000099-main.pdf https://boris.unibe.ch/183214/ eng eng Elsevier https://boris.unibe.ch/183214/ info:eu-repo/semantics/openAccess Chaqdid, Abdelaziz; Tuel, Alexandre; El Fatimy, Abdelouahad; El Moçayd, Nabil (2023). Extreme rainfall events in Morocco: Spatial dependence and climate drivers. Weather and climate extremes, 40, p. 100556. Elsevier 10.1016/j.wace.2023.100556 <http://dx.doi.org/10.1016/j.wace.2023.100556> 550 Earth sciences & geology 910 Geography & travel 500 Science info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion PeerReviewed 2023 ftunivbern https://doi.org/10.1016/j.wace.2023.100556 2023-07-31T22:21:51Z The history of Morocco is replete with tragic natural disasters related to floods that led to numerous casualties and significant material losses. An important driver of these floods is extreme precipitation. Understanding the spatial characteristics of extreme precipitation events is critical to accurately predicting, assessing, and mitigating the risks they pose. Yet, the physical drivers of extreme precipitation events (EPEs) in Morocco remain poorly known. To address this gap, we apply a clustering method to divide Morocco into regions that are spatially consistent in terms of extreme precipitation. We then determine the drivers of extreme precipitation by analyzing atmospheric circulation anomalies during the occurrence of some well chosen EPEs in each region. Our findings suggest that Morocco can be subdivided into 5 spatially coherent regions. Extreme precipitation in the northwestern regions is associated with patterns similar to the negative phase of the North Atlantic Oscillation (NAO) with strong upper-level flow anomalies enhanced by Greenland blocking and/or Rossby wave breaking (RWB) episodes. By contrast, the southern regions are associated with relatively weak upper air troughs but strong water vapor transport anomalies from the tropics. Article in Journal/Newspaper Greenland North Atlantic North Atlantic oscillation BORIS (Bern Open Repository and Information System, University of Bern) Greenland Weather and Climate Extremes 40 100556 |
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Open Polar |
collection |
BORIS (Bern Open Repository and Information System, University of Bern) |
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ftunivbern |
language |
English |
topic |
550 Earth sciences & geology 910 Geography & travel 500 Science |
spellingShingle |
550 Earth sciences & geology 910 Geography & travel 500 Science Chaqdid, Abdelaziz Tuel, Alexandre El Fatimy, Abdelouahad El Moçayd, Nabil Extreme rainfall events in Morocco: Spatial dependence and climate drivers |
topic_facet |
550 Earth sciences & geology 910 Geography & travel 500 Science |
description |
The history of Morocco is replete with tragic natural disasters related to floods that led to numerous casualties and significant material losses. An important driver of these floods is extreme precipitation. Understanding the spatial characteristics of extreme precipitation events is critical to accurately predicting, assessing, and mitigating the risks they pose. Yet, the physical drivers of extreme precipitation events (EPEs) in Morocco remain poorly known. To address this gap, we apply a clustering method to divide Morocco into regions that are spatially consistent in terms of extreme precipitation. We then determine the drivers of extreme precipitation by analyzing atmospheric circulation anomalies during the occurrence of some well chosen EPEs in each region. Our findings suggest that Morocco can be subdivided into 5 spatially coherent regions. Extreme precipitation in the northwestern regions is associated with patterns similar to the negative phase of the North Atlantic Oscillation (NAO) with strong upper-level flow anomalies enhanced by Greenland blocking and/or Rossby wave breaking (RWB) episodes. By contrast, the southern regions are associated with relatively weak upper air troughs but strong water vapor transport anomalies from the tropics. |
format |
Article in Journal/Newspaper |
author |
Chaqdid, Abdelaziz Tuel, Alexandre El Fatimy, Abdelouahad El Moçayd, Nabil |
author_facet |
Chaqdid, Abdelaziz Tuel, Alexandre El Fatimy, Abdelouahad El Moçayd, Nabil |
author_sort |
Chaqdid, Abdelaziz |
title |
Extreme rainfall events in Morocco: Spatial dependence and climate drivers |
title_short |
Extreme rainfall events in Morocco: Spatial dependence and climate drivers |
title_full |
Extreme rainfall events in Morocco: Spatial dependence and climate drivers |
title_fullStr |
Extreme rainfall events in Morocco: Spatial dependence and climate drivers |
title_full_unstemmed |
Extreme rainfall events in Morocco: Spatial dependence and climate drivers |
title_sort |
extreme rainfall events in morocco: spatial dependence and climate drivers |
publisher |
Elsevier |
publishDate |
2023 |
url |
https://boris.unibe.ch/183214/1/1-s2.0-S2212094723000099-main.pdf https://boris.unibe.ch/183214/ |
geographic |
Greenland |
geographic_facet |
Greenland |
genre |
Greenland North Atlantic North Atlantic oscillation |
genre_facet |
Greenland North Atlantic North Atlantic oscillation |
op_source |
Chaqdid, Abdelaziz; Tuel, Alexandre; El Fatimy, Abdelouahad; El Moçayd, Nabil (2023). Extreme rainfall events in Morocco: Spatial dependence and climate drivers. Weather and climate extremes, 40, p. 100556. Elsevier 10.1016/j.wace.2023.100556 <http://dx.doi.org/10.1016/j.wace.2023.100556> |
op_relation |
https://boris.unibe.ch/183214/ |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1016/j.wace.2023.100556 |
container_title |
Weather and Climate Extremes |
container_volume |
40 |
container_start_page |
100556 |
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1774718304339886080 |