Articles | Volume 7, issue 2
https://doi.org/10.5194/wcd-7-567-2026
https://doi.org/10.5194/wcd-7-567-2026
Research article
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08 Apr 2026
Research article | Highlight paper |  | 08 Apr 2026

Contrasting impact of different Mediterranean cyclones on the hydrological cycle and ocean heat content

Yonatan Givon, Douglas Keller Jr., Philippe Drobinski, and Shira Raveh-Rubin

Data sets

ERA5 hourly data on single levels from 1940 to present Hans Hersbach et al. https://doi.org/10.24381/cds.adbb2d47

Video supplement

Mediterranean cyclones: induced evaporation year 2019 Yonatan Givon https://doi.org/10.5446/72785

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Editorial statement
This study details the contribution of different Mediterranean cyclone types (obtained using a potential-vorticity based classification) to the Mediterranean hydrological cycle. The approach allows attributing trends in evaporation E, precipitation P and the net freshwater flux (E-P) to the different frequency and intensity changes of each cyclone category. Of particular interest is the finding that the impact of Mediterranean cyclones on P, E, and E-P substantially varies according to the cyclone type. Therefore, understanding trends in the hydrological cycle in the Mediterranean must go beyond counting cyclones and also look at cyclone types and their specific frequency trends.
Short summary
We examine the impact of differently driven Mediterranean cyclones on the regional water cycle and ocean heat content based on a process-based classification. Opposing effects of different cyclone drivers are revealed, stemming from variations in both cyclone frequency and intensity. Mediterranean cyclones offset ~quarter of the precipitation-evaporation deficit, steadily shifting towards evaporation-dominated states.
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