Heat Exchange over a Melting Snow Surface
The relative importance of the principal elements of the thermal balance above snow during a period of melting has been evaluated using recent studies of the turbulent transfer in the boundary layer. Several anomalies in the profiles prove the continuing presence, near to the surface, of a thick lay...
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Language: | English |
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Cambridge University Press (CUP)
1974
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Online Access: | http://dx.doi.org/10.1017/s0022143000023376 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0022143000023376 |
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crcambridgeupr:10.1017/s0022143000023376 2024-10-13T14:08:39+00:00 Heat Exchange over a Melting Snow Surface De La CasinièRe, A. C. 1974 http://dx.doi.org/10.1017/s0022143000023376 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0022143000023376 en eng Cambridge University Press (CUP) Journal of Glaciology volume 13, issue 67, page 55-72 ISSN 0022-1430 1727-5652 journal-article 1974 crcambridgeupr https://doi.org/10.1017/s0022143000023376 2024-09-25T04:00:59Z The relative importance of the principal elements of the thermal balance above snow during a period of melting has been evaluated using recent studies of the turbulent transfer in the boundary layer. Several anomalies in the profiles prove the continuing presence, near to the surface, of a thick layer of air apparently re-heated by the radiative flux. It is shown that the upper surface of this “exchange layer” ought to be considered as the new level for the origin of profiles, and taken as the exchange surface. The importance of nocturnal refreezing has been quantified. Excellent correlations have been found between mean air temperature and total energy balance; they have allowed the establishment of an approximate, non-linear expression for the effective daily ablation of snow as a function of mean air temperature. This relation gives satisfactory results at high and intermediate altitudes, in horizontal uncovered terrain. The measurements were made in the French Alps at 3550 m and in Spain at the latitude of Madrid à 1860 in. Article in Journal/Newspaper Journal of Glaciology Cambridge University Press Journal of Glaciology 13 67 55 72 |
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Open Polar |
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Cambridge University Press |
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crcambridgeupr |
language |
English |
description |
The relative importance of the principal elements of the thermal balance above snow during a period of melting has been evaluated using recent studies of the turbulent transfer in the boundary layer. Several anomalies in the profiles prove the continuing presence, near to the surface, of a thick layer of air apparently re-heated by the radiative flux. It is shown that the upper surface of this “exchange layer” ought to be considered as the new level for the origin of profiles, and taken as the exchange surface. The importance of nocturnal refreezing has been quantified. Excellent correlations have been found between mean air temperature and total energy balance; they have allowed the establishment of an approximate, non-linear expression for the effective daily ablation of snow as a function of mean air temperature. This relation gives satisfactory results at high and intermediate altitudes, in horizontal uncovered terrain. The measurements were made in the French Alps at 3550 m and in Spain at the latitude of Madrid à 1860 in. |
format |
Article in Journal/Newspaper |
author |
De La CasinièRe, A. C. |
spellingShingle |
De La CasinièRe, A. C. Heat Exchange over a Melting Snow Surface |
author_facet |
De La CasinièRe, A. C. |
author_sort |
De La CasinièRe, A. C. |
title |
Heat Exchange over a Melting Snow Surface |
title_short |
Heat Exchange over a Melting Snow Surface |
title_full |
Heat Exchange over a Melting Snow Surface |
title_fullStr |
Heat Exchange over a Melting Snow Surface |
title_full_unstemmed |
Heat Exchange over a Melting Snow Surface |
title_sort |
heat exchange over a melting snow surface |
publisher |
Cambridge University Press (CUP) |
publishDate |
1974 |
url |
http://dx.doi.org/10.1017/s0022143000023376 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0022143000023376 |
genre |
Journal of Glaciology |
genre_facet |
Journal of Glaciology |
op_source |
Journal of Glaciology volume 13, issue 67, page 55-72 ISSN 0022-1430 1727-5652 |
op_doi |
https://doi.org/10.1017/s0022143000023376 |
container_title |
Journal of Glaciology |
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13 |
container_issue |
67 |
container_start_page |
55 |
op_container_end_page |
72 |
_version_ |
1812815369212002304 |