Titre
Breaking Rossby waves drive extreme precipitation in the world's arid regions
Type
article
Institution
UNIL/CHUV/Unisanté + institutions partenaires
Périodique
Auteur(s)
de Vries, Andries Jan
Auteure/Auteur
Armon, Moshe
Auteure/Auteur
Klingmüller, Klaus
Auteure/Auteur
Portmann, Raphael
Auteure/Auteur
Röthlisberger, Matthias
Auteure/Auteur
Domeisen, Daniela I. V.
Auteure/Auteur
Liens vers les personnes
Liens vers les unités
ISSN
2662-4435
Statut éditorial
Publié
Date de publication
2024-09-20
Volume
5
Numéro
1
Peer-reviewed
Oui
Langue
anglais
Résumé
More than a third of the world's population lives in drylands and is disproportionately at risk from hydrometeorological hazards such as drought and flooding. While weather systems governing precipitation formation in humid regions have been widely explored, our understanding of the atmospheric processes generating precipitation in arid regions remains fragmented at best. Here we show, using a variety of precipitation datasets, that Rossby wave breaking is a key atmospheric driver of precipitation in arid regions worldwide. Rossby wave breaking contributes up to 90% of daily precipitation extremes and up to 80% of total precipitation amounts in arid regions equatorward and downstream of the midlatitude storm tracks. The relevance of Rossby wave breaking for precipitation increases with increasing land aridity. Contributions of wave breaking to precipitation dominate in the poleward and westward portions of arid subtropical regions during the cool season. Our findings imply that Rossby wave breaking plays a crucial role in projections and uncertainties of future precipitation changes in societally vulnerable regions that are exposed to both freshwater shortages and flood hazards.
PID Serval
serval:BIB_DD68AB623E6D
PMID
Open Access
Oui
Date de création
2024-09-30T13:25:47.714Z
Date de création dans IRIS
2025-05-21T06:54:39Z
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Nom
39309671_BIB_DD68AB623E6D.pdf
Version du manuscrit
published
Licence
https://creativecommons.org/licenses/by-nc-nd/4.0
Taille
22.43 MB
Format
Adobe PDF
PID Serval
serval:BIB_DD68AB623E6D.P001
URN
urn:nbn:ch:serval-BIB_DD68AB623E6D4
Somme de contrôle
(MD5):643db86a9dbc8789e0c6ae7de2ce3531