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          Institute: MPI für Meteorologie     Collection: Climate Processes     Display Documents



  history
ID: 223490.0, MPI für Meteorologie / Climate Processes
The diurnal cycle of shallow cumulus clouds over land: A single-column model intercomparison study
Authors:Lenderink, G.; Siebesma, A. P.; Cheinet, S.; Irons, S.; Jones, C. G.; Marquet, P.; Müller, Frank; Olmeda, D.; Calvo, J.; Sanchez, E.; Soares, P. M. M.
Language:English
Date of Publication (YYYY-MM-DD):2004-10
Title of Journal:Quarterly Journal of the Royal Meteorological Society
Journal Abbrev.:Q. J. R. Meteorol. Soc.
Volume:130
Issue / Number:604
Start Page:3339
End Page:3364
Review Status:Peer-review
Audience:Not Specified
Abstract / Description:An intercomparison study for single-column models (SCMs) of the diurnal cycle of shallow cumulus convection is reported. The case, based on measurements at the Atmospheric Radiation Measurement program Southern Great Plains site on 21 June 1997, has been used in a large-eddy simulation intercomparison study before. Results of the SCMs reveal the following general deficiencies: too large values of cloud cover and Cloud liquid water, unrealistic thermodynamic profiles, and high amounts of numerical noise. Results are also strongly dependent on vertical resolution.

These results are analysed in terms of the behaviour of the different parametrization schemes involved: the convection scheme, the turbulence scheme, and the cloud scheme. In general the behaviour of the SCMs can be grouped in two different classes: one class with too strong mixing by the turbulence scheme, the other class with too strong activity by the convection scheme. The coupling between (subcloud) turbulence and the convection scheme plays a crucial role. Finally, (in part) motivated by these results several models have been successfully updated with new parametrization schemes and/or their present schemes have been successfully modified
Free Keywords:boundary-layer; convection; EUROCS; large-eddy simulation; LARGE-EDDY SIMULATION; ATMOSPHERIC BOUNDARY-LAYER; FLUX CONVECTION SCHEME; LARGE-SCALE MODELS; TURBULENCE SCHEME; WATER-VAPOR; PARAMETERIZATION; CLIMATE; DIFFUSIVITY; REPRESENTATION
External Publication Status:published
Document Type:Article
Version Comment:Automatic journal name synchronization
Affiliations:MPI für Meteorologie/Climate Processes
External Affiliations:Royal Netherlands Meteorol Inst, NL-3730 AE De Bilt, Netherlands.; Lab Meteorol Dynam, Paris, France.; Met Off, Exeter, Devon, England.; Swedish Meteorol & Hydrol Inst, Norrkoping, Sweden.; Meteo France, Toulouse, France.; Inst Nacl Meteorol, Madrid, Spain.; Inst Super Engn, Lisbon, Portugal.; Univ Lisbon, Lisbon, Portugal.
Identifiers:ISI:000226878300015 [ID No:1]
ISSN:0035-9009 [ID No:2]
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