Model Simulations of the Arctic Atmospheric Boundary Layer from the SHEBA Year
We present Arctic atmospheric boundary-layer modeling with a regional model COAMPSTM, for the Surface Heat Budget of the Arctic Ocean (SHEBA) experiment. Model results are compared to soundings, near-surface measurements and forecasts from the ECMWF model. The near-surface temperature is often too h...
Published in: | AMBIO: A Journal of the Human Environment |
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ftbioone:10.1579/0044-7447-33.4.221 2023-07-30T04:01:04+02:00 Model Simulations of the Arctic Atmospheric Boundary Layer from the SHEBA Year Michael Tjernström Mark Žagar Gunilla Svensson Michael Tjernström Mark Žagar Gunilla Svensson world 2004-06-01 text/HTML https://doi.org/10.1579/0044-7447-33.4.221 en eng Royal Swedish Academy of Sciences doi:10.1579/0044-7447-33.4.221 All rights reserved. https://doi.org/10.1579/0044-7447-33.4.221 Text 2004 ftbioone https://doi.org/10.1579/0044-7447-33.4.221 2023-07-09T09:35:12Z We present Arctic atmospheric boundary-layer modeling with a regional model COAMPSTM, for the Surface Heat Budget of the Arctic Ocean (SHEBA) experiment. Model results are compared to soundings, near-surface measurements and forecasts from the ECMWF model. The near-surface temperature is often too high in winter, except in shorter periods when the boundary layer was cloud-capped and well-mixed due to cloud-top cooling. Temperatures are slightly too high also during the summer melt season. Effects are too high boundary-layer moisture and formation of too dense stratocumulus, generating a too deep well-mixed boundary layer with a cold bias at the simulated boundary-layer top. Errors in temperature and therefore moisture are responsible for large errors in heat flux, in particular in solar radiation, by forming these clouds. We conclude that the main problems lie in the surface energy balance and the treatment of the heat conduction through the ice and snow and in how low-level clouds are treated. Text Arctic Arctic Ocean Surface Heat Budget of the Arctic Ocean BioOne Online Journals Arctic Arctic Ocean AMBIO: A Journal of the Human Environment 33 4 221 227 |
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Open Polar |
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BioOne Online Journals |
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ftbioone |
language |
English |
description |
We present Arctic atmospheric boundary-layer modeling with a regional model COAMPSTM, for the Surface Heat Budget of the Arctic Ocean (SHEBA) experiment. Model results are compared to soundings, near-surface measurements and forecasts from the ECMWF model. The near-surface temperature is often too high in winter, except in shorter periods when the boundary layer was cloud-capped and well-mixed due to cloud-top cooling. Temperatures are slightly too high also during the summer melt season. Effects are too high boundary-layer moisture and formation of too dense stratocumulus, generating a too deep well-mixed boundary layer with a cold bias at the simulated boundary-layer top. Errors in temperature and therefore moisture are responsible for large errors in heat flux, in particular in solar radiation, by forming these clouds. We conclude that the main problems lie in the surface energy balance and the treatment of the heat conduction through the ice and snow and in how low-level clouds are treated. |
author2 |
Michael Tjernström Mark Žagar Gunilla Svensson |
format |
Text |
author |
Michael Tjernström Mark Žagar Gunilla Svensson |
spellingShingle |
Michael Tjernström Mark Žagar Gunilla Svensson Model Simulations of the Arctic Atmospheric Boundary Layer from the SHEBA Year |
author_facet |
Michael Tjernström Mark Žagar Gunilla Svensson |
author_sort |
Michael Tjernström |
title |
Model Simulations of the Arctic Atmospheric Boundary Layer from the SHEBA Year |
title_short |
Model Simulations of the Arctic Atmospheric Boundary Layer from the SHEBA Year |
title_full |
Model Simulations of the Arctic Atmospheric Boundary Layer from the SHEBA Year |
title_fullStr |
Model Simulations of the Arctic Atmospheric Boundary Layer from the SHEBA Year |
title_full_unstemmed |
Model Simulations of the Arctic Atmospheric Boundary Layer from the SHEBA Year |
title_sort |
model simulations of the arctic atmospheric boundary layer from the sheba year |
publisher |
Royal Swedish Academy of Sciences |
publishDate |
2004 |
url |
https://doi.org/10.1579/0044-7447-33.4.221 |
op_coverage |
world |
geographic |
Arctic Arctic Ocean |
geographic_facet |
Arctic Arctic Ocean |
genre |
Arctic Arctic Ocean Surface Heat Budget of the Arctic Ocean |
genre_facet |
Arctic Arctic Ocean Surface Heat Budget of the Arctic Ocean |
op_source |
https://doi.org/10.1579/0044-7447-33.4.221 |
op_relation |
doi:10.1579/0044-7447-33.4.221 |
op_rights |
All rights reserved. |
op_doi |
https://doi.org/10.1579/0044-7447-33.4.221 |
container_title |
AMBIO: A Journal of the Human Environment |
container_volume |
33 |
container_issue |
4 |
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221 |
op_container_end_page |
227 |
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1772811807539331072 |