Climatic controls on active layer dynamics: Amsler Island, Antarctica
Abstract Variations in atmospheric conditions can be important factors influencing temperature dynamics within the active layer of a soil. Solar radiation and air temperature can directly alter ground surface temperatures, while variations in wind and precipitation can control how quickly heat is ca...
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Online Access: | http://dx.doi.org/10.1017/s0954102016000511 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0954102016000511 |
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crcambridgeupr:10.1017/s0954102016000511 2024-03-03T08:36:35+00:00 Climatic controls on active layer dynamics: Amsler Island, Antarctica Wilhelm, Kelly R. Bockheim, James G. 2016 http://dx.doi.org/10.1017/s0954102016000511 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0954102016000511 en eng Cambridge University Press (CUP) https://www.cambridge.org/core/terms Antarctic Science volume 29, issue 2, page 173-182 ISSN 0954-1020 1365-2079 Geology Ecology, Evolution, Behavior and Systematics Oceanography journal-article 2016 crcambridgeupr https://doi.org/10.1017/s0954102016000511 2024-02-08T08:41:01Z Abstract Variations in atmospheric conditions can be important factors influencing temperature dynamics within the active layer of a soil. Solar radiation and air temperature can directly alter ground surface temperatures, while variations in wind and precipitation can control how quickly heat is carried through soil pores. The presence of seasonal snow cover can also create a thermal barrier between the atmosphere and ground surface. This study examines the relation between atmospheric conditions and ground temperature variations on a deglaciated island along the Western Antarctic Peninsula. Ground temperatures were most significantly influenced by incoming solar radiation, followed by air temperature variations. When winter months were included in the comparison, the influence of air temperature increased while solar radiation became less influential, indicating that snow cover reflected solar radiation inputs, but was not thick enough to insulate the ground. When ground temperatures were compared to atmospheric conditions of preceding weeks, seasonal temperature peaks 1.6 m below ground were best related to seasonal air temperature peaks from the previous two weeks. The same ground temperature peaks were best related to seasonal solar radiation peaks of seven weeks prior. This difference was a result of temperature lags within the atmosphere. Article in Journal/Newspaper Amsler Island Antarc* Antarctic Antarctic Peninsula Antarctic Science Antarctica Cambridge University Press Antarctic Antarctic Peninsula Amsler Island ENVELOPE(-64.077,-64.077,-64.762,-64.762) Antarctic Science 29 2 173 182 |
institution |
Open Polar |
collection |
Cambridge University Press |
op_collection_id |
crcambridgeupr |
language |
English |
topic |
Geology Ecology, Evolution, Behavior and Systematics Oceanography |
spellingShingle |
Geology Ecology, Evolution, Behavior and Systematics Oceanography Wilhelm, Kelly R. Bockheim, James G. Climatic controls on active layer dynamics: Amsler Island, Antarctica |
topic_facet |
Geology Ecology, Evolution, Behavior and Systematics Oceanography |
description |
Abstract Variations in atmospheric conditions can be important factors influencing temperature dynamics within the active layer of a soil. Solar radiation and air temperature can directly alter ground surface temperatures, while variations in wind and precipitation can control how quickly heat is carried through soil pores. The presence of seasonal snow cover can also create a thermal barrier between the atmosphere and ground surface. This study examines the relation between atmospheric conditions and ground temperature variations on a deglaciated island along the Western Antarctic Peninsula. Ground temperatures were most significantly influenced by incoming solar radiation, followed by air temperature variations. When winter months were included in the comparison, the influence of air temperature increased while solar radiation became less influential, indicating that snow cover reflected solar radiation inputs, but was not thick enough to insulate the ground. When ground temperatures were compared to atmospheric conditions of preceding weeks, seasonal temperature peaks 1.6 m below ground were best related to seasonal air temperature peaks from the previous two weeks. The same ground temperature peaks were best related to seasonal solar radiation peaks of seven weeks prior. This difference was a result of temperature lags within the atmosphere. |
format |
Article in Journal/Newspaper |
author |
Wilhelm, Kelly R. Bockheim, James G. |
author_facet |
Wilhelm, Kelly R. Bockheim, James G. |
author_sort |
Wilhelm, Kelly R. |
title |
Climatic controls on active layer dynamics: Amsler Island, Antarctica |
title_short |
Climatic controls on active layer dynamics: Amsler Island, Antarctica |
title_full |
Climatic controls on active layer dynamics: Amsler Island, Antarctica |
title_fullStr |
Climatic controls on active layer dynamics: Amsler Island, Antarctica |
title_full_unstemmed |
Climatic controls on active layer dynamics: Amsler Island, Antarctica |
title_sort |
climatic controls on active layer dynamics: amsler island, antarctica |
publisher |
Cambridge University Press (CUP) |
publishDate |
2016 |
url |
http://dx.doi.org/10.1017/s0954102016000511 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0954102016000511 |
long_lat |
ENVELOPE(-64.077,-64.077,-64.762,-64.762) |
geographic |
Antarctic Antarctic Peninsula Amsler Island |
geographic_facet |
Antarctic Antarctic Peninsula Amsler Island |
genre |
Amsler Island Antarc* Antarctic Antarctic Peninsula Antarctic Science Antarctica |
genre_facet |
Amsler Island Antarc* Antarctic Antarctic Peninsula Antarctic Science Antarctica |
op_source |
Antarctic Science volume 29, issue 2, page 173-182 ISSN 0954-1020 1365-2079 |
op_rights |
https://www.cambridge.org/core/terms |
op_doi |
https://doi.org/10.1017/s0954102016000511 |
container_title |
Antarctic Science |
container_volume |
29 |
container_issue |
2 |
container_start_page |
173 |
op_container_end_page |
182 |
_version_ |
1792507404221415424 |