Plant, R.S. and Craig, G.C. (2008) A Stochastic Parameterization for Deep Convection Based on Equilibrium Statistics. Journal of the Atmospheric Sciences, 65, pp. 87-105. American Meteorological Society. doi: 10.1175/2007JAS2263.1.
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Official URL: http://ams.allenpress.com/perlserv/?request=get-archive&issn=1520-0469
Abstract
A stochastic parameterization scheme for deep convection is described, suitable for use in both climate and NWP models. Theoretical arguments and the results of cloud-resolving models are discussed in order to motivate the form of the scheme. In the deterministic limit, it tends to a spectrum of entraining/detraining plumes and is similar to other current parameterizations. The stochastic variability describes the local fluctuations about a large-scale equilibrium state. Plumes are drawn at random from a probability distribution function (PDF) that defines the chance of finding a plume of given cloud-base mass flux within each model grid box. The normalization of the PDF is given by the ensemble-mean mass flux, and this is computed with a CAPE closure method. The characteristics of each plume produced are determined using an adaptation of the plume model from the Kain–Fritsch parameterization. Initial tests in the single-column version of the Unified Model verify that the scheme is effective in producing the desired distributions of convective variability without adversely affecting the mean state.
Item URL in elib: | https://elib.dlr.de/53655/ | |||||||||
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Document Type: | Article | |||||||||
Title: | A Stochastic Parameterization for Deep Convection Based on Equilibrium Statistics | |||||||||
Authors: |
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Date: | 2008 | |||||||||
Journal or Publication Title: | Journal of the Atmospheric Sciences | |||||||||
Refereed publication: | Yes | |||||||||
Open Access: | Yes | |||||||||
Gold Open Access: | No | |||||||||
In SCOPUS: | Yes | |||||||||
In ISI Web of Science: | Yes | |||||||||
Volume: | 65 | |||||||||
DOI: | 10.1175/2007JAS2263.1 | |||||||||
Page Range: | pp. 87-105 | |||||||||
Publisher: | American Meteorological Society | |||||||||
Status: | Published | |||||||||
Keywords: | convection, stochastic parameterization | |||||||||
HGF - Research field: | Aeronautics, Space and Transport (old) | |||||||||
HGF - Program: | Space (old) | |||||||||
HGF - Program Themes: | W EO - Erdbeobachtung | |||||||||
DLR - Research area: | Space | |||||||||
DLR - Program: | W EO - Erdbeobachtung | |||||||||
DLR - Research theme (Project): | W - Vorhaben Atmosphären- und Klimaforschung (old) | |||||||||
Location: | Oberpfaffenhofen | |||||||||
Institutes and Institutions: | Institute of Atmospheric Physics > Cloud Physics and Traffic Meteorology | |||||||||
Deposited By: | Freund, Jana | |||||||||
Deposited On: | 05 Mar 2008 | |||||||||
Last Modified: | 06 Sep 2019 15:27 |
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