Articles | Volume 12, issue 1
Development and technical paper
16 Jan 2019
Development and technical paper |  | 16 Jan 2019

Independent perturbations for physics parametrization tendencies in a convection-permitting ensemble (pSPPT)

Clemens Wastl, Yong Wang, Aitor Atencia, and Christoph Wittmann


Interactive discussion

Status: closed
Status: closed
AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment
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Peer-review completion

AR: Author's response | RR: Referee report | ED: Editor decision
AR by Anna Wenzel on behalf of the Authors (27 Nov 2018)  Author's response    Manuscript
ED: Publish as is (03 Jan 2019) by Richard Neale
Short summary
Ensemble forecasting at the convection-permitting scale (< 3 km) requires new methodologies in representing model uncertainties. In this paper a new stochastic scheme is proposed and tested in the complex terrain of the Alps. In this scheme the tendencies of the physical parametrizations are perturbed separately, which sustains a physically consistent relationship between the processes. This scheme increases the stability of the model and leads to improvements in the probabilistic performance.