Semi-prognostic tests of a new cumulus parameterization scheme for mesoscale modeling
نویسندگان
چکیده
منابع مشابه
The Use of Cloud-Resolving Simulations of Mesoscale Convective Systems to Build a Mesoscale Parameterization Scheme
A method is described for parameterizing thermodynamic forcing by the mesoscale updrafts and downdrafts of mesoscale convective systems (MCSs) in models with resolution too coarse to resolve these drafts. The parameterization contains improvements over previous schemes, including a more sophisticated convective driver and inclusion of the vertical distribution of various physical processes obta...
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Observations from the International Winter Monsoon Experiment (Winter MONEX) have been used to determine temperature changes in the lower troposphere beneath the stratiform components of tropical mesoscale convective systems. It is found that while the apparent heat source Q1 in the lower troposphere beneath the stratiform cloud systems is negative (due to hydrometeor melting and evaporation), ...
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A new microphysical scheme that uses lognormal basis functions to represent cloud and drizzle Ž . drop spectra is presented. The scheme is incorporated in a two-dimensional 2-D eddy-resolving model and applied to the simulation of a stratocumulus cloud deck based on a sounding from the Atlantic Stratocumulus Transition Experiment. Firstly, the philosophy behind the design of the scheme is discu...
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This paper prototypes a method for calibrating a cumulus parameterization against a cumulus ensemble model. The key to this technique is to run the cumulus model and the parameterization in identical test cells which provide forcing typical of that seen over tropical oceans. In particular, the mean temperature pro le is relaxed to a reference pro le which is assumed to be characteristic of the ...
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There is evidence from observations that evaporation of precipitation falling from widespread thick masses of middle-and high-cloud cumulonimbus debris is of vital importance to the dynamics of some tropical disturbances. A numerical model suitable for testing this idea has been designed and run. Dynamics of the large-scale flow are governed by the hydrostatic unfiltered equations specialized t...
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ژورنال
عنوان ژورنال: Tellus A: Dynamic Meteorology and Oceanography
سال: 1996
ISSN: 1600-0870
DOI: 10.3402/tellusa.v48i2.12060