Articles | Volume 2, issue 4
Weather Clim. Dynam., 2, 1011–1031, 2021
Weather Clim. Dynam., 2, 1011–1031, 2021

Research article 29 Oct 2021

Research article | 29 Oct 2021

The impact of deep convection representation in a global atmospheric model on the warm conveyor belt and jet stream during NAWDEX IOP6

Gwendal Rivière et al.

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Cited articles

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Bauer, P., Thorpe, A., and Brunet, G.: The quiet revolution of numerical weather prediction, Nature, 525, 47–55,, 2015. a
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Bechtold, P., Bazile, E., Guichard, F., Mascart, P., and Richard, E.: A mass flux convection scheme for regional and global models, Q. J. Roy. Meteor. Soc., 127, 869–886,, 2001. a, b
Belamari, S.: Report on uncertainty estimates of an optimal bulk formulation for surface turbulent fluxes, (Deliverable No. D.4.1.2), Toulouse, France, Marine environment and security for the European area – Integrated Project (MERSEA IP), 2005. a, b
Short summary
Inacurracies in representing processes occurring at spatial scales smaller than the grid scales of the weather forecast models are important sources of forecast errors. This is the case of deep convection representation in models with 10 km grid spacing. We performed simulations of a real extratropical cyclone using a model with different representations of deep convection. These forecasts lead to different behaviors in the ascending air masses of the cyclone and the jet stream aloft.