Laboratory modelling of atmospheric dynamical processes
We discuss how atmospheric or oceanic flow processes can be reproduced at laboratory scale. The similarity conditions for the effects of density stratification and Earth rotation are first presented. It is argued that a large size is required to reproduce multi-scale turbulence with minimal viscous...
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Published in | EPJ Web of conferences Vol. 1; pp. 101 - 111 |
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Main Authors | , , |
Format | Journal Article |
Language | English |
Published |
EDP Sciences
01.01.2009
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Online Access | Get full text |
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Summary: | We discuss how atmospheric or oceanic flow processes can be reproduced at laboratory scale. The similarity conditions for the effects of density stratification and Earth rotation are first presented. It is argued that a large size is required to reproduce multi-scale turbulence with minimal viscous effects. Examples of results obtained on the large ‘Coriolis’ platform in Grenoble, 13 m in diameter, are described. The development of the baroclinic instability, the main source of perturbations in the mid-latitude atmosphere, is first presented. The second example is the driving of alternating azimuthal jets by small scale convective eddies, relevant for the zonal bands in the Giant planet atmosphere. Finally examples of topographic wakes in a stratiffed fluid and gravity currents are presented. It is argued that physical modelling must be used in close relationship with theory and numerical modelling, using advanced measurement and data assimilation techniques. |
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Bibliography: | ark:/67375/80W-QJ768Z3Z-D other:2009EPJWC...1..101S istex:9DCC0B8F5CF86354583DAB85404010ECCFAE7640 publisher-ID:epjconf1009 |
ISBN: | 2759804194 9782759804191 |
ISSN: | 2100-014X 2100-014X |
DOI: | 10.1140/epjconf/e2009-00913-0 |