Portal, Alice; Martius, Olivia; Raveh-Rubin, Shira; Catto L., Jennifer (8 March 2024). A climatology of Mediterranean cyclones and compound weather extremes. In: EGU General Assembly 2024. Copernicus Publications 10.5194/egusphere-egu24-5188
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Mediterranean cyclones are the main driver of surface weather extremes in the Mediterranean region. In this work we establish a new procedure for the attribution of different types of meteorological extremes to Mediterranean cyclones, where we also distinguish the presence of different airflows (warm conveyor belts, dry intrusions) and fronts composing the structure of a cyclone. We apply the procedure to a dataset of rain-wind and wave-wind compound extremes extracted from ERA5 reanalysis in a recent climatological period, and show that the majority of weather compounds occurring in the Mediterranean area is indeed linked to the presence of a nearby cyclone. The association of compound rain-wind events with Mediterranean cyclones locally surpasses an 80% level, while interesting differences between transition seasons and winter are detected. Winter cyclones - generally stronger, larger and distinctively baroclinic - are associated with a higher compound density. The de-construction of the cyclone in airflows and fronts evidences a strong association of rain-wind compounds with regions of warm conveyor belt ascent, and of wave-wind compounds with regions of dry intrusion outflow.
Item Type: |
Conference or Workshop Item (Abstract) |
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Division/Institute: |
10 Strategic Research Centers > Oeschger Centre for Climate Change Research (OCCR) > MobiLab 08 Faculty of Science > Institute of Geography > Physical Geography > Unit Impact 10 Strategic Research Centers > Oeschger Centre for Climate Change Research (OCCR) 08 Faculty of Science > Institute of Geography 08 Faculty of Science > Institute of Geography > Physical Geography |
UniBE Contributor: |
Portal, Alice, Romppainen-Martius, Olivia |
Subjects: |
000 Computer science, knowledge & systems 900 History > 910 Geography & travel |
Publisher: |
Copernicus Publications |
Language: |
English |
Submitter: |
Lara Maude Zinkl |
Date Deposited: |
08 Aug 2024 08:03 |
Last Modified: |
08 Aug 2024 08:03 |
Publisher DOI: |
10.5194/egusphere-egu24-5188 |
BORIS DOI: |
10.48350/199569 |
URI: |
https://boris.unibe.ch/id/eprint/199569 |
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