Plinius Conference Abstracts
Vol. 17, Plinius17-69, 2022
https://doi.org/10.5194/egusphere-plinius17-69
17th Plinius Conference on Mediterranean Risks
© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.

Quantifying the contribution of diabatic processes in the intensification of Mediterranean tropical-like cyclones (Medicanes)

Stavros Dafis1,2, Emmanouil Flaounas3, Chantal Claud4, Vassiliki Kotroni1, and Konstantinos Lagouvardos1
Stavros Dafis et al.
  • 1National Observatory of Athens, Institute for Environmental Research and Sustainable Development, Vas. Pavlou & Metaxa, 15236 Athens, Greece
  • 2Data4Risk, Paris, France
  • 3Institute of Marine Biological Resources and Inland Waters, Hellenic Centre for Marine Research, HCMR, 19013 Anavyssos, Greece
  • 4LMD/IPSL, CNRS UMR 8539, École Polytechnique, Université Paris Saclay, ENS, PSL Research University, Sorbonne Universités, UPMC Univ Paris 06, Palaiseau, France

The classification of Mediterranean cyclones has always been a challenging task, especially when grouping warm-core and small-scale cyclones such as the Mediterranean tropical-like cyclones (Medicanes). The sudden intensity changes of Medicanes, the evolution of deep convection and the large spread of forecast tracks in numerical weather forecast models highlight the challenges in understanding the dynamics of these weather systems. In this study, numerical diagnostics are used to explain the evolution and contribution of diabatic processes in case studies of Medicanes. High-resolution simulations with WRF model are utilized and are evaluated against observations, before implementing the Pressure Tendency Equation (PTE). The decomposition of PTE shows interesting results about the contribution of diabatic processes and large-scale forcing during each Medicane. Moreover, an online Potential Vorticity (PV) tracer module is implemented in the WRF model, that provides another metric for the role of latent heating during the same Medicanes. Both approaches help to identify important differences among the case studies and shed a new light on a new pathway of Medicane development.

How to cite: Dafis, S., Flaounas, E., Claud, C., Kotroni, V., and Lagouvardos, K.: Quantifying the contribution of diabatic processes in the intensification of Mediterranean tropical-like cyclones (Medicanes), 17th Plinius Conference on Mediterranean Risks, Frascati, Rome, Italy, 12–15 Oct 2021, Plinius17-69, https://doi.org/10.5194/egusphere-plinius17-69, 2021.