Articles | Volume 4, issue 1
Research article
25 Jan 2023
Research article |  | 25 Jan 2023

Origin of low-tropospheric potential vorticity in Mediterranean cyclones

Alexander Scherrmann, Heini Wernli, and Emmanouil Flaounas

Related authors

Precipitation extremes in Ukraine from 1979 to 2019: climatology, large-scale flow conditions, and moisture sources
Ellina Agayar, Franziska Aemisegger, Moshe Armon, Alexander Scherrmann, and Heini Wernli
Nat. Hazards Earth Syst. Sci., 24, 2441–2459,,, 2024
Short summary
The upstream–downstream connection of North Atlantic and Mediterranean cyclones in semi-idealized simulations
Alexander Scherrmann, Heini Wernli, and Emmanouil Flaounas
Weather Clim. Dynam., 5, 419–438,,, 2024
Short summary

Related subject area

Dynamical processes in midlatitudes
Deepening mechanisms of cut-off lows in the Southern Hemisphere and the role of jet streams: insights from eddy kinetic energy analysis
Henri Rossi Pinheiro, Kevin Ivan Hodges, and Manoel Alonso Gan
Weather Clim. Dynam., 5, 881–894,,, 2024
Short summary
Large-scale perspective on extreme near-surface winds in the central North Atlantic
Aleksa Stanković, Gabriele Messori, Joaquim G. Pinto, and Rodrigo Caballero
Weather Clim. Dynam., 5, 821–837,,, 2024
Short summary
Divergent convective outflow in ICON deep-convection-permitting and parameterised deep convection simulations
Edward Groot, Patrick Kuntze, Annette Miltenberger, and Holger Tost
Weather Clim. Dynam., 5, 779–803,,, 2024
Short summary
Changes in the North Atlantic Oscillation over the 20th century
Stephen Outten and Richard Davy
Weather Clim. Dynam., 5, 753–762,,, 2024
Short summary
Life cycle dynamics of Greenland blocking from a potential vorticity perspective
Seraphine Hauser, Franziska Teubler, Michael Riemer, Peter Knippertz, and Christian M. Grams
Weather Clim. Dynam., 5, 633–658,,, 2024
Short summary

Cited articles

Aebischer, U. and Schär, C.: Low-level potential vorticity and cyclogenesis to the lee of the Alps, J. Atmos. Sci., 55, 186–207,<0186:LLPVAC>2.0.CO;2, 1998. a, b, c
Appenzeller, C. and Davies, H. C.: Structure of stratospheric intrusions into the troposphere, Nature, 358, 570–572,, 1992. a
Aragão, L. and Porcù, F.: Cyclonic activity in the Mediterranean region from a high-resolution perspective using ECMWF ERA5 dataset, Clim. Dynam., 58, 1293–1310,, 2022. a, b
Attinger, R.: Quantifying the diabatic modification of potential vorticity in extratropical cyclones, PhD thesis, ETH Zurich,, 2020. a
Attinger, R., Spreitzer, E., Boettcher, M., Forbes, R., Wernli, H., and Joos, H.: Quantifying the role of individual diabatic processes for the formation of PV anomalies in a North Pacific cyclone, Q. J. Roy. Meteor. Soc., 145, 2454–2476,, 2019. a, b, c, d
Short summary
We investigate the dynamical origin of the lower-atmospheric potential vorticity (PV; linked to the intensity of cyclones) in Mediterranean cyclones. We quantify the contribution of the cyclone and the environment by tracing PV backward in time and space and linking it to the track of the cyclone. We find that the lower-tropospheric PV is produced shortly before the cyclone's stage of highest intensity. We investigate the driving processes and use a global dataset and a process-resolving one.