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Your search keyword '"Beare, R. J."' showing total 22 results
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22 results on '"Beare, R. J."'

1. A note on boundary-layer friction in baroclinic cyclones

Author

Boutle, I. A., Beare, R. J., Belcher, S. E., and Plant, R. S.

Subjects
Physics - Atmospheric and Oceanic Physics, Physics - Fluid Dynamics
Abstract

The interaction between extratropical cyclones and the underlying boundary layer has been a topic of recent discussion in papers by Adamson et. al. (2006) and Beare (2007). Their results emphasise different mechanisms through which the boundary layer dynamics may modify the growth of a baroclinic cyclone. By using different sea-surface temperature distributions and comparing the low-level winds, the differences are exposed and both of the proposed mechanisms appear to be acting within a single simulation., Comment: 5 pages, 3 figures

Published
2008
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9. Single-column Model Intercomparison for a Stably Stratified Atmospheric Boundary Layer

Author

Cuxart, J, Holtslag, A. A. M, Steeneveld, G-J, Beare, R. J, Bazile, E, Beljaars, A, Cheng, A, Conangla, L, Ek, M, Freedman, F, and Hamdi, R

Subjects
Meteorology And Climatology
Abstract

The parameterization of the stably stratified atmospheric boundary layer is a difficult issue, which has a large impact on the medium-range weather forecasts and on climate integrations. A non-strongly stratified arctic case is simulated by nineteen single-column turbulence schemes. The statistics from the Large-eddy simulation (LES) intercomparison made for the same case by eight different models are used as a guiding reference. The single-column parameterizations include research schemes and operational schemes from major forecast and climate research centres. First order schemes, a large number of turbulence kinetic energy closures, and other proposals have submitted results. There is a large spread in the results; in general, the operational schemes mix more efficiently than the research ones, and the TKE and other higher order closures give results closer to the LES statistics. The sensitivities of the schemes to the parameters of their turbulence closures are partially explored.

Published
2004

19. Single-Column Model Intercomparison for a Stably Stratified Atmospheric Boundary Layer

Author

Cuxart, J., primary, Holtslag, A. A. M., additional, Beare, R. J., additional, Bazile, E., additional, Beljaars, A., additional, Cheng, A., additional, Conangla, L., additional, Ek, M., additional, Freedman, F., additional, Hamdi, R., additional, Kerstein, A., additional, Kitagawa, H., additional, Lenderink, G., additional, Lewellen, D., additional, Mailhot, J., additional, Mauritsen, T., additional, Perov, V., additional, Schayes, G., additional, Steeneveld, G-J., additional, Svensson, G., additional, Taylor, P., additional, Weng, W., additional, Wunsch, S., additional, and Xu, K-M., additional

Published
2005
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