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Statistical properties of cloud lifecycles in cloud-resolving models

Plant, R.S. (2008) Statistical properties of cloud lifecycles in cloud-resolving models. Atmospheric Chemistry and Physics Discussions, 8. pp. 20537-20564. ISSN 1680-7375

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Official URL: http://www.atmos-chem-phys-discuss.net/8/20537/200...

Abstract/Summary

A new technique is described for the analysis of cloud-resolving model simulations, which allows one to investigate the statistics of the lifecycles of cumulus clouds. Clouds are tracked from timestep-to-timestep within the model run. This allows for a very simple method of tracking, but one which is both comprehensive and robust. An approach for handling cloud splits and mergers is described which allows clouds with simple and complicated time histories to be compared within a single framework. This is found to be important for the analysis of an idealized simulation of radiative-convective equilibrium, in which the moist, buoyant, updrafts (i.e., the convective cores) were tracked. Around half of all such cores were subject to splits and mergers during their lifecycles. For cores without any such events, the average lifetime is 30min, but events can lengthen the typical lifetime considerably.

Item Type:Article
Refereed:Yes
Divisions:Faculty of Science > School of Mathematical and Physical Sciences > Department of Meteorology
ID Code:1232
Publisher:Copernicus Publications

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