Weather and Climate Dynamics
Weather and Climate Dynamics
WCD
Articles | Volume 7, issue 2
Articles | Volume 7, issue 2
https://doi.org/10.5194/wcd-7-805-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/wcd-7-805-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 7, issue 2
Research article
 | 
19 May 2026
Research article |  | 19 May 2026

A cyclone phase space dedicated to extratropical cyclones

Myriam Besson, Gwendal Rivière, and Sébastien Fromang

Related authors

Modeling the coupled and decoupled states of polar boundary-layer mixed-phase clouds
Étienne Vignon, Lea Raillard, Audran Borella, Gwendal Rivière, and Jean-Baptiste Madeleine
Atmos. Chem. Phys., 26, 1847–1865, https://doi.org/10.5194/acp-26-1847-2026,https://doi.org/10.5194/acp-26-1847-2026, 2026
Short summary
Intercomparison of four algorithms for detecting tropical cyclones using ERA5
Stella Bourdin, Sébastien Fromang, William Dulac, Julien Cattiaux, and Fabrice Chauvin
Geosci. Model Dev., 15, 6759–6786, https://doi.org/10.5194/gmd-15-6759-2022,https://doi.org/10.5194/gmd-15-6759-2022, 2022
Short summary

Cited articles

Aizawa, T. and Tanaka, H. L.: Axisymmetric structure of the long lasting summer Arctic cyclones, Polar Sci., 10, 192–198, https://doi.org/10.1016/j.polar.2016.02.002, 2016. a, b
Azad, R. and Sorteberg, A.: A diagnosis of warm-core and cold-core extratropical cyclone development using the Zwack–Okossi equation, Atmos. Sci. Lett., 10, 220–225, https://doi.org/10.1002/asl.244, 2009. a
Bjerknes, J. and Solberg, H.: Life cycle of cyclones and the polar front theory of atmospheric circulation, Cammermeyers Bogh., https://doi.org/10.1175/1520-0493(1922)50<468:JBAHSO>2.0.CO;2, 1922. a
Bourdin, S.: CPyS: A package for efficient computation of the Cyclone Phase Space parameters, GitHub [code], https://github.com/stella-bourdin/CPyS (last access: 4 May 2026), 2024. a
Cai, M. and Mak, M.: On the basic dynamics of regional cyclogenesis, J. Atmos. Sci., 47, 1417–1442, 1990. a
More articles (45)
Download
Short summary
Extratropical cyclones are key weather features that often lead to strong wind and precipitations. We focus on those formed in the northern midlatitudes through the prism of their core temperature, thermal asymmetry and baroclinic growth rate. With these variables is built a new cyclone phase space that allows a distinction between warm-core cyclones, that fit with the classical baroclinic wave models and are the most common in the midlatitudes, and cold-core cyclones, that are more intriguing.
Read more
Share