КОНВЕКЦИЯ ВОЗДУХА В СНЕЖНОМ ПОКРОВЕ МОРСКОГО ЛЬДА (AIR CONVECTION IN SNOW COVER OF SEA ICE)
For the first time, data on stability of stationary convective filtration within infinite horizontal layer of snow covering the flat surface of floating ice is presented in this article. An analytical solution of the linearized problem was obtained with the use of the Galerkin method, and the parame...
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Nauka
2020
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Online Access: | https://oceanrep.geomar.de/id/eprint/51340/ https://oceanrep.geomar.de/id/eprint/51340/1/Bogorodskiy%20et%20al.pdf https://doi.org/10.31857/S2076673420040060 |
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ftoceanrep:oai:oceanrep.geomar.de:51340 2023-05-15T17:07:18+02:00 КОНВЕКЦИЯ ВОЗДУХА В СНЕЖНОМ ПОКРОВЕ МОРСКОГО ЛЬДА (AIR CONVECTION IN SNOW COVER OF SEA ICE) Bogorodskiy, P. V. Borodkin, V. A. Kustov, V. Yu. Sumkina, A. A. 2020 text https://oceanrep.geomar.de/id/eprint/51340/ https://oceanrep.geomar.de/id/eprint/51340/1/Bogorodskiy%20et%20al.pdf https://doi.org/10.31857/S2076673420040060 ru rus Nauka https://oceanrep.geomar.de/id/eprint/51340/1/Bogorodskiy%20et%20al.pdf Bogorodskiy, P. V., Borodkin, V. A., Kustov, V. Y. and Sumkina, A. A. (2020) КОНВЕКЦИЯ ВОЗДУХА В СНЕЖНОМ ПОКРОВЕ МОРСКОГО ЛЬДА (AIR CONVECTION IN SNOW COVER OF SEA ICE). Open Access Ice and Snow (Lëd i sneg), 60 (4). pp. 557-566. DOI 10.31857/S2076673420040060 <https://doi.org/10.31857/S2076673420040060>. doi:10.31857/S2076673420040060 info:eu-repo/semantics/openAccess Article PeerReviewed 2020 ftoceanrep https://doi.org/10.31857/S2076673420040060 2023-04-07T15:53:32Z For the first time, data on stability of stationary convective filtration within infinite horizontal layer of snow covering the flat surface of floating ice is presented in this article. An analytical solution of the linearized problem was obtained with the use of the Galerkin method, and the parametric analysis of the problem was performed. It was found that the stability criteria (Rayleigh filtration numbers) obtained with consideration for the heat exchange of snow cover with the atmosphere did not exceed the known value of 4π2 for a horizontal porous layer with impermeable isothermal boundaries. As expected, the interaction with the atmosphere has the most significant impact on the critical Rayleigh numbers, while influence of variations in snow density and ice thickness and the thickness of the underlying layer of ice are small. Based on data of ice and meteorological observations made in the winter of 2015/16 in the Western part of the Laptev Sea together with calculations of the fast ice evolution, the values and temporal variability of temperature gradients and the Rayleigh numbers in the snow cover were obtained using a thermodynamic model. It was found that both, the model and observed magnitudes, exceeded their critical values determined by solving the stability problem. The conclusion is made that the convective regime of the heat transfer does really exist in the snow cover, and thus its contribution to the thermal and mass balance of sea ice during winter period should be taken into account. Article in Journal/Newspaper laptev Laptev Sea Sea ice OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel) Laptev Sea Ice and Snow 60 4 557 566 |
institution |
Open Polar |
collection |
OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel) |
op_collection_id |
ftoceanrep |
language |
Russian |
description |
For the first time, data on stability of stationary convective filtration within infinite horizontal layer of snow covering the flat surface of floating ice is presented in this article. An analytical solution of the linearized problem was obtained with the use of the Galerkin method, and the parametric analysis of the problem was performed. It was found that the stability criteria (Rayleigh filtration numbers) obtained with consideration for the heat exchange of snow cover with the atmosphere did not exceed the known value of 4π2 for a horizontal porous layer with impermeable isothermal boundaries. As expected, the interaction with the atmosphere has the most significant impact on the critical Rayleigh numbers, while influence of variations in snow density and ice thickness and the thickness of the underlying layer of ice are small. Based on data of ice and meteorological observations made in the winter of 2015/16 in the Western part of the Laptev Sea together with calculations of the fast ice evolution, the values and temporal variability of temperature gradients and the Rayleigh numbers in the snow cover were obtained using a thermodynamic model. It was found that both, the model and observed magnitudes, exceeded their critical values determined by solving the stability problem. The conclusion is made that the convective regime of the heat transfer does really exist in the snow cover, and thus its contribution to the thermal and mass balance of sea ice during winter period should be taken into account. |
format |
Article in Journal/Newspaper |
author |
Bogorodskiy, P. V. Borodkin, V. A. Kustov, V. Yu. Sumkina, A. A. |
spellingShingle |
Bogorodskiy, P. V. Borodkin, V. A. Kustov, V. Yu. Sumkina, A. A. КОНВЕКЦИЯ ВОЗДУХА В СНЕЖНОМ ПОКРОВЕ МОРСКОГО ЛЬДА (AIR CONVECTION IN SNOW COVER OF SEA ICE) |
author_facet |
Bogorodskiy, P. V. Borodkin, V. A. Kustov, V. Yu. Sumkina, A. A. |
author_sort |
Bogorodskiy, P. V. |
title |
КОНВЕКЦИЯ ВОЗДУХА В СНЕЖНОМ ПОКРОВЕ МОРСКОГО ЛЬДА (AIR CONVECTION IN SNOW COVER OF SEA ICE) |
title_short |
КОНВЕКЦИЯ ВОЗДУХА В СНЕЖНОМ ПОКРОВЕ МОРСКОГО ЛЬДА (AIR CONVECTION IN SNOW COVER OF SEA ICE) |
title_full |
КОНВЕКЦИЯ ВОЗДУХА В СНЕЖНОМ ПОКРОВЕ МОРСКОГО ЛЬДА (AIR CONVECTION IN SNOW COVER OF SEA ICE) |
title_fullStr |
КОНВЕКЦИЯ ВОЗДУХА В СНЕЖНОМ ПОКРОВЕ МОРСКОГО ЛЬДА (AIR CONVECTION IN SNOW COVER OF SEA ICE) |
title_full_unstemmed |
КОНВЕКЦИЯ ВОЗДУХА В СНЕЖНОМ ПОКРОВЕ МОРСКОГО ЛЬДА (AIR CONVECTION IN SNOW COVER OF SEA ICE) |
title_sort |
конвекция воздуха в снежном покрове морского льда (air convection in snow cover of sea ice) |
publisher |
Nauka |
publishDate |
2020 |
url |
https://oceanrep.geomar.de/id/eprint/51340/ https://oceanrep.geomar.de/id/eprint/51340/1/Bogorodskiy%20et%20al.pdf https://doi.org/10.31857/S2076673420040060 |
geographic |
Laptev Sea |
geographic_facet |
Laptev Sea |
genre |
laptev Laptev Sea Sea ice |
genre_facet |
laptev Laptev Sea Sea ice |
op_relation |
https://oceanrep.geomar.de/id/eprint/51340/1/Bogorodskiy%20et%20al.pdf Bogorodskiy, P. V., Borodkin, V. A., Kustov, V. Y. and Sumkina, A. A. (2020) КОНВЕКЦИЯ ВОЗДУХА В СНЕЖНОМ ПОКРОВЕ МОРСКОГО ЛЬДА (AIR CONVECTION IN SNOW COVER OF SEA ICE). Open Access Ice and Snow (Lëd i sneg), 60 (4). pp. 557-566. DOI 10.31857/S2076673420040060 <https://doi.org/10.31857/S2076673420040060>. doi:10.31857/S2076673420040060 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.31857/S2076673420040060 |
container_title |
Ice and Snow |
container_volume |
60 |
container_issue |
4 |
container_start_page |
557 |
op_container_end_page |
566 |
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1766062672261939200 |