A simple model of the convective internal boundary layer and its application to surface heat flux estimates within polynyas
A simple model of the convective (thermal) internalboundary layer has been developed for climatologicalstudies of air-sea-ice interaction, where in situobservations are scarce and first-order estimates ofsurface heat fluxes are required. It is amixed-layer slab model, based on a steady-statesolution...
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ftuniveastangl:oai:ueaeprints.uea.ac.uk:26898 2023-05-15T18:18:23+02:00 A simple model of the convective internal boundary layer and its application to surface heat flux estimates within polynyas Renfrew, Ian A. King, John C. 2000 https://ueaeprints.uea.ac.uk/id/eprint/26898/ https://doi.org/10.1023/A:1002492412097 unknown Renfrew, Ian A. and King, John C. (2000) A simple model of the convective internal boundary layer and its application to surface heat flux estimates within polynyas. Boundary-Layer Meteorology, 94. pp. 335-356. ISSN 1573-1472 doi:10.1023/A:1002492412097 Article PeerReviewed 2000 ftuniveastangl https://doi.org/10.1023/A:1002492412097 2023-01-30T21:27:32Z A simple model of the convective (thermal) internalboundary layer has been developed for climatologicalstudies of air-sea-ice interaction, where in situobservations are scarce and first-order estimates ofsurface heat fluxes are required. It is amixed-layer slab model, based on a steady-statesolution of the conservation of potentialtemperature equation, assuming a balance betweenadvection and turbulent heat-flux convergence. Boththe potential temperature and the surface heat fluxare allowed to vary with fetch, so the subsequentboundary-layer modification alters the fluxconvergence and thus the boundary-layer growth rate.For simplicity, microphysical and radiativeprocesses are neglected. The model is validated using several case studies.For a clear-sky cold-air outbreak over a coastalpolynya the observed boundary-layer heights,mixed-layer potential temperatures and surface heatfluxes are all well reproduced. In other cases,where clouds are present, the model still capturesmost of the observed boundary-layer modification,although there are increasing discrepancies withfetch, due to the neglected microphysical andradiative processes. The application of the model toclimatological studies of air-sea interaction withincoastal polynyas is discussed. Article in Journal/Newspaper Sea ice University of East Anglia: UEA Digital Repository |
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Open Polar |
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University of East Anglia: UEA Digital Repository |
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ftuniveastangl |
language |
unknown |
description |
A simple model of the convective (thermal) internalboundary layer has been developed for climatologicalstudies of air-sea-ice interaction, where in situobservations are scarce and first-order estimates ofsurface heat fluxes are required. It is amixed-layer slab model, based on a steady-statesolution of the conservation of potentialtemperature equation, assuming a balance betweenadvection and turbulent heat-flux convergence. Boththe potential temperature and the surface heat fluxare allowed to vary with fetch, so the subsequentboundary-layer modification alters the fluxconvergence and thus the boundary-layer growth rate.For simplicity, microphysical and radiativeprocesses are neglected. The model is validated using several case studies.For a clear-sky cold-air outbreak over a coastalpolynya the observed boundary-layer heights,mixed-layer potential temperatures and surface heatfluxes are all well reproduced. In other cases,where clouds are present, the model still capturesmost of the observed boundary-layer modification,although there are increasing discrepancies withfetch, due to the neglected microphysical andradiative processes. The application of the model toclimatological studies of air-sea interaction withincoastal polynyas is discussed. |
format |
Article in Journal/Newspaper |
author |
Renfrew, Ian A. King, John C. |
spellingShingle |
Renfrew, Ian A. King, John C. A simple model of the convective internal boundary layer and its application to surface heat flux estimates within polynyas |
author_facet |
Renfrew, Ian A. King, John C. |
author_sort |
Renfrew, Ian A. |
title |
A simple model of the convective internal boundary layer and its application to surface heat flux estimates within polynyas |
title_short |
A simple model of the convective internal boundary layer and its application to surface heat flux estimates within polynyas |
title_full |
A simple model of the convective internal boundary layer and its application to surface heat flux estimates within polynyas |
title_fullStr |
A simple model of the convective internal boundary layer and its application to surface heat flux estimates within polynyas |
title_full_unstemmed |
A simple model of the convective internal boundary layer and its application to surface heat flux estimates within polynyas |
title_sort |
simple model of the convective internal boundary layer and its application to surface heat flux estimates within polynyas |
publishDate |
2000 |
url |
https://ueaeprints.uea.ac.uk/id/eprint/26898/ https://doi.org/10.1023/A:1002492412097 |
genre |
Sea ice |
genre_facet |
Sea ice |
op_relation |
Renfrew, Ian A. and King, John C. (2000) A simple model of the convective internal boundary layer and its application to surface heat flux estimates within polynyas. Boundary-Layer Meteorology, 94. pp. 335-356. ISSN 1573-1472 doi:10.1023/A:1002492412097 |
op_doi |
https://doi.org/10.1023/A:1002492412097 |
_version_ |
1766194950322520064 |