Journal article

The consequences of a local approach in statistical models of convection on its large-scale coherence

Jackson Tan, Christian Jakob, Todd P Lane

Journal of Geophysical Research: Atmospheres | American Geophysical Union | Published : 2015

Abstract

Organized tropical convection is a crucial mechanism in the climate system, but its representation in climate models through parametrization schemes has numerous shortcomings. One of these shortcomings is that they are deterministic despite the statistical nature of the relationship they are representing. Several attempts at devising a stochastic parametrization scheme have been made, many of which assume a local approach, that is, one in which the convection in a grid box is determined without consideration of the previous time steps and the surrounding boxes. This study seeks to explore the effect of this assumption on the coherence of convection using cloud regimes, which represent variou..

View full abstract

University of Melbourne Researchers

Grants

Awarded by Australian Research Council Centre of Excellence for Climate System Science


Funding Acknowledgements

The authors thank Kais Hamza and Karsten Peters for discussions on the study and three anonymous reviewers for their helpful comments. This project is funded under the Australian Research Council Centre of Excellence for Climate System Science (CE110001028). J. T. acknowledges support from Monash University Postgraduate Publication Award. Data and codes pertaining to this paper can be obtained by contacting the corresponding author (jackson.tan@nasa.gov).