Near-surface climate and surface energy budget of Larsen C ice shelf, Antarctic Peninsula
Data collected by two automatic weather stations (AWS) on the Larsen C ice shelf, Antarctica, between 22 January 2009 and 1 February 2011 are analyzed and used as input for a model that computes the surface energy budget (SEB), which includes melt energy. The two AWSs are separated by about 70 km in...
Published in: | The Cryosphere |
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Language: | English |
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2012
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Online Access: | https://doi.org/10.5194/tc-6-353-2012 http://www.the-cryosphere.net/6/353/2012/tc-6-353-2012.pdf https://doaj.org/article/bd19f22878934494a48850c411e3db2f |
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fttriple:oai:gotriple.eu:oai:doaj.org/article:bd19f22878934494a48850c411e3db2f 2023-05-15T13:55:13+02:00 Near-surface climate and surface energy budget of Larsen C ice shelf, Antarctic Peninsula P. Kuipers Munneke M. R. van den Broeke J. C. King T. Gray C. H. Reijmer 2012-03-01 https://doi.org/10.5194/tc-6-353-2012 http://www.the-cryosphere.net/6/353/2012/tc-6-353-2012.pdf https://doaj.org/article/bd19f22878934494a48850c411e3db2f en eng Copernicus Publications doi:10.5194/tc-6-353-2012 1994-0416 1994-0424 http://www.the-cryosphere.net/6/353/2012/tc-6-353-2012.pdf https://doaj.org/article/bd19f22878934494a48850c411e3db2f undefined The Cryosphere, Vol 6, Iss 2, Pp 353-363 (2012) geo envir Journal Article https://vocabularies.coar-repositories.org/resource_types/c_6501/ 2012 fttriple https://doi.org/10.5194/tc-6-353-2012 2023-01-22T19:07:51Z Data collected by two automatic weather stations (AWS) on the Larsen C ice shelf, Antarctica, between 22 January 2009 and 1 February 2011 are analyzed and used as input for a model that computes the surface energy budget (SEB), which includes melt energy. The two AWSs are separated by about 70 km in the north–south direction, and both the near-surface meteorology and the SEB show similarities, although small differences in all components (most notably the melt flux) can be seen. The impact of subsurface absorption of shortwave radiation on melt and snow temperature is significant, and discussed. In winter, longwave cooling of the surface is entirely compensated by a downward turbulent transport of sensible heat. In summer, the positive net radiative flux is compensated by melt, and quite frequently by upward turbulent diffusion of heat and moisture, leading to sublimation and weak convection over the ice shelf. The month of November 2010 is highlighted, when strong westerly flow over the Antarctic Peninsula led to a dry and warm föhn wind over the ice shelf, resulting in warm and sunny conditions. Under these conditions the increase in shortwave and sensible heat fluxes is larger than the decrease of net longwave and latent heat fluxes, providing energy for significant melt. Article in Journal/Newspaper Antarc* Antarctic Antarctic Peninsula Antarctica Ice Shelf The Cryosphere Unknown Antarctic Antarctic Peninsula The Antarctic The Cryosphere 6 2 353 363 |
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English |
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geo envir |
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geo envir P. Kuipers Munneke M. R. van den Broeke J. C. King T. Gray C. H. Reijmer Near-surface climate and surface energy budget of Larsen C ice shelf, Antarctic Peninsula |
topic_facet |
geo envir |
description |
Data collected by two automatic weather stations (AWS) on the Larsen C ice shelf, Antarctica, between 22 January 2009 and 1 February 2011 are analyzed and used as input for a model that computes the surface energy budget (SEB), which includes melt energy. The two AWSs are separated by about 70 km in the north–south direction, and both the near-surface meteorology and the SEB show similarities, although small differences in all components (most notably the melt flux) can be seen. The impact of subsurface absorption of shortwave radiation on melt and snow temperature is significant, and discussed. In winter, longwave cooling of the surface is entirely compensated by a downward turbulent transport of sensible heat. In summer, the positive net radiative flux is compensated by melt, and quite frequently by upward turbulent diffusion of heat and moisture, leading to sublimation and weak convection over the ice shelf. The month of November 2010 is highlighted, when strong westerly flow over the Antarctic Peninsula led to a dry and warm föhn wind over the ice shelf, resulting in warm and sunny conditions. Under these conditions the increase in shortwave and sensible heat fluxes is larger than the decrease of net longwave and latent heat fluxes, providing energy for significant melt. |
format |
Article in Journal/Newspaper |
author |
P. Kuipers Munneke M. R. van den Broeke J. C. King T. Gray C. H. Reijmer |
author_facet |
P. Kuipers Munneke M. R. van den Broeke J. C. King T. Gray C. H. Reijmer |
author_sort |
P. Kuipers Munneke |
title |
Near-surface climate and surface energy budget of Larsen C ice shelf, Antarctic Peninsula |
title_short |
Near-surface climate and surface energy budget of Larsen C ice shelf, Antarctic Peninsula |
title_full |
Near-surface climate and surface energy budget of Larsen C ice shelf, Antarctic Peninsula |
title_fullStr |
Near-surface climate and surface energy budget of Larsen C ice shelf, Antarctic Peninsula |
title_full_unstemmed |
Near-surface climate and surface energy budget of Larsen C ice shelf, Antarctic Peninsula |
title_sort |
near-surface climate and surface energy budget of larsen c ice shelf, antarctic peninsula |
publisher |
Copernicus Publications |
publishDate |
2012 |
url |
https://doi.org/10.5194/tc-6-353-2012 http://www.the-cryosphere.net/6/353/2012/tc-6-353-2012.pdf https://doaj.org/article/bd19f22878934494a48850c411e3db2f |
geographic |
Antarctic Antarctic Peninsula The Antarctic |
geographic_facet |
Antarctic Antarctic Peninsula The Antarctic |
genre |
Antarc* Antarctic Antarctic Peninsula Antarctica Ice Shelf The Cryosphere |
genre_facet |
Antarc* Antarctic Antarctic Peninsula Antarctica Ice Shelf The Cryosphere |
op_source |
The Cryosphere, Vol 6, Iss 2, Pp 353-363 (2012) |
op_relation |
doi:10.5194/tc-6-353-2012 1994-0416 1994-0424 http://www.the-cryosphere.net/6/353/2012/tc-6-353-2012.pdf https://doaj.org/article/bd19f22878934494a48850c411e3db2f |
op_rights |
undefined |
op_doi |
https://doi.org/10.5194/tc-6-353-2012 |
container_title |
The Cryosphere |
container_volume |
6 |
container_issue |
2 |
container_start_page |
353 |
op_container_end_page |
363 |
_version_ |
1766261505384251392 |