Adaptive detrainment in a convective parametrization

被引：81

作者：

Derbyshire, S. H. ^{[1
]}

Maidens, A. V. ^{[1
]}

Milton, S. F. ^{[1
]}

Stratton, R. A. ^{[1
]}

Willett, M. R. ^{[1
]}

机构：

[1] Met Off, Exeter EX1 3PB, Devon, England

来源：

QUARTERLY JOURNAL OF THE ROYAL METEOROLOGICAL SOCIETY | 2011年 / 137卷 / 660期

关键词：

Unified Model; humidity; entrainment; HIGH-RESOLUTION SIMULATION; MASS-FLUX SCHEME; CLOUD ENSEMBLE; CUMULUS; SHALLOW; PARAMETERIZATION; ENTRAINMENT; TRANSITION; WEATHER; MODEL;

D O I：

10.1002/qj.875

中图分类号：

P4 [大气科学（气象学）];

学科分类号：

0706 ; 070601 ;

摘要：

Mass-flux convection schemes continue to play key roles in large-scale atmospheric modelling. Currently, however, the specification of detrainment seems a potential weakness. Using cloud-resolving model results from the European Cloud Systems (EUROCS) humidity case, we consider how detrainment adapts to its environment and formulate a minimal-complexity description of partial detrainment in convective cloud fields. This can be viewed as an approximation to the behaviour of a multi-plume scheme. The algorithm is straightforwardly implemented within the Gregory-Rowntree convection scheme as an extension of its original partial-detrainment scheme. Numerical weather prediction tests in the Met Office Unified Model show significant benefits in full-model performance. (C) 2011 Crown Copyright, the Met Office. Published by John Wiley & Sons Ltd.

引用

页码：1856 / 1871

页数：16

共 34 条

[1] Evaluation of the Met Office global forecast model using Geostationary Earth Radiation Budget (GERB) data [J].