Articles | Volume 4, issue 1
https://doi.org/10.5194/wcd-4-115-2023
https://doi.org/10.5194/wcd-4-115-2023
Research article
 | 
19 Jan 2023
Research article |  | 19 Jan 2023

Cloud-radiative impact on the dynamics and predictability of an idealized extratropical cyclone

Behrooz Keshtgar, Aiko Voigt, Corinna Hoose, Michael Riemer, and Bernhard Mayer

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Cited articles

Albern, N., Voigt, A., and Pinto, J. G.: Cloud-Radiative Impact on the Regional Responses of the Midlatitude Jet Streams and Storm Tracks to Global Warming, J. Adv. Model. Earth Sy., 11, 1940–1958, https://doi.org/10.1029/2018MS001592, 2019. a
Balasubramanian, G. and Garner, S. T.: The Role of Momentum Fluxes in Shaping the Life Cycle of a Baroclinic Wave, J. Atmos. Sci., 54, 510–533, https://doi.org/10.1175/1520-0469(1997)054<0510:TROMFI>2.0.CO;2, 1997. a
Barekzai, M. and Mayer, B.: Broadening of the Cloud Droplet Size Distribution due to Thermal Radiative Cooling: Turbulent Parcel Simulations, J. Atmos. Sci., 77, 1993–2010, https://doi.org/10.1175/JAS-D-18-0349.1, 2020. a
Baumgart, M., Riemer, M., Wirth, V., Teubler, F., and Lang, S. T.: Potential vorticity dynamics of Forecast errors: A quantitative case study, Mon. Weather Rev., 146, 1405–1425, https://doi.org/10.1175/MWR-D-17-0196.1, 2018. a, b, c, d, e
Baumgart, M., Ghinassi, P., Wirth, V., Selz, T., Craig, G. C., and Riemer, M.: Quantitative view on the processes governing the upscale error growth up to the planetary scale using a stochastic convection scheme, Mon. Weather Rev., 147, 1713–1731, https://doi.org/10.1175/MWR-D-18-0292.1, 2019. a, b, c, d, e, f, g, h, i, j, k, l
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Short summary
Forecasting extratropical cyclones is challenging due to many physical factors influencing their behavior. One such factor is the impact of heating and cooling of the atmosphere by the interaction between clouds and radiation. In this study, we show that cloud-radiative heating (CRH) increases the intensity of an idealized cyclone and affects its predictability. We find that CRH affects the cyclone mostly via increasing latent heat release and subsequent changes in the synoptic circulation.