Borehole temperatures reveal a changed energy budget at Mill Island, East Antarctica, over recent decades
A borehole temperature record from the Mill Island (East Antarctica) icecap reveals a large surface warming signal manifested as a 0.75 K temperature difference over the approximate 100 m depth in the zone of zero annual amplitude below the seasonally varying zone. The temperature profile shows a br...
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ftnonlinearchiv:oai:noa.gwlb.de:cop_mods_00023393 2023-05-15T13:41:01+02:00 Borehole temperatures reveal a changed energy budget at Mill Island, East Antarctica, over recent decades Roberts, J. L. Moy, A. D. van Ommen, T. D. Curran, M. A. J. Worby, A. P. Goodwin, I. D. Inoue, M. 2013-02 electronic https://doi.org/10.5194/tc-7-263-2013 https://noa.gwlb.de/receive/cop_mods_00023393 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00023348/tc-7-263-2013.pdf https://tc.copernicus.org/articles/7/263/2013/tc-7-263-2013.pdf eng eng Copernicus Publications The Cryosphere -- ˜Theœ Cryosphere -- http://www.bibliothek.uni-regensburg.de/ezeit/?2393169 -- http://www.the-cryosphere.net/ -- 1994-0424 https://doi.org/10.5194/tc-7-263-2013 https://noa.gwlb.de/receive/cop_mods_00023393 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00023348/tc-7-263-2013.pdf https://tc.copernicus.org/articles/7/263/2013/tc-7-263-2013.pdf uneingeschränkt info:eu-repo/semantics/openAccess article Verlagsveröffentlichung article Text doc-type:article 2013 ftnonlinearchiv https://doi.org/10.5194/tc-7-263-2013 2022-02-08T22:50:41Z A borehole temperature record from the Mill Island (East Antarctica) icecap reveals a large surface warming signal manifested as a 0.75 K temperature difference over the approximate 100 m depth in the zone of zero annual amplitude below the seasonally varying zone. The temperature profile shows a break in gradient around 49 m depth, which we model with inverse numerical simulations, indicating that surface warming started around the austral summer of 1980/81 AD ±5 yr. This warming of approximately 0.37 K per decade is consistent with trends seen in both instrumental and other reconstructions for Antarctica and, therefore, suggests that regional- rather than local-scale processes are largely responsible. Alteration of the surface energy budget arising from changes in radiation balances due to local cloud, the amount of liquid deposition and local air temperatures associated with altered air/sea exchanges also potentially plays a role at this location due to the proximity of the Shackleton Ice Shelf and sea-ice zone. Article in Journal/Newspaper Antarc* Antarctica East Antarctica Ice Shelf Mill Island Sea ice Shackleton Ice Shelf The Cryosphere Niedersächsisches Online-Archiv NOA Austral East Antarctica Mill Island ENVELOPE(100.667,100.667,-65.500,-65.500) Shackleton Shackleton Ice Shelf ENVELOPE(100.504,100.504,-65.996,-65.996) The Cryosphere 7 1 263 273 |
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Open Polar |
collection |
Niedersächsisches Online-Archiv NOA |
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ftnonlinearchiv |
language |
English |
topic |
article Verlagsveröffentlichung |
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article Verlagsveröffentlichung Roberts, J. L. Moy, A. D. van Ommen, T. D. Curran, M. A. J. Worby, A. P. Goodwin, I. D. Inoue, M. Borehole temperatures reveal a changed energy budget at Mill Island, East Antarctica, over recent decades |
topic_facet |
article Verlagsveröffentlichung |
description |
A borehole temperature record from the Mill Island (East Antarctica) icecap reveals a large surface warming signal manifested as a 0.75 K temperature difference over the approximate 100 m depth in the zone of zero annual amplitude below the seasonally varying zone. The temperature profile shows a break in gradient around 49 m depth, which we model with inverse numerical simulations, indicating that surface warming started around the austral summer of 1980/81 AD ±5 yr. This warming of approximately 0.37 K per decade is consistent with trends seen in both instrumental and other reconstructions for Antarctica and, therefore, suggests that regional- rather than local-scale processes are largely responsible. Alteration of the surface energy budget arising from changes in radiation balances due to local cloud, the amount of liquid deposition and local air temperatures associated with altered air/sea exchanges also potentially plays a role at this location due to the proximity of the Shackleton Ice Shelf and sea-ice zone. |
format |
Article in Journal/Newspaper |
author |
Roberts, J. L. Moy, A. D. van Ommen, T. D. Curran, M. A. J. Worby, A. P. Goodwin, I. D. Inoue, M. |
author_facet |
Roberts, J. L. Moy, A. D. van Ommen, T. D. Curran, M. A. J. Worby, A. P. Goodwin, I. D. Inoue, M. |
author_sort |
Roberts, J. L. |
title |
Borehole temperatures reveal a changed energy budget at Mill Island, East Antarctica, over recent decades |
title_short |
Borehole temperatures reveal a changed energy budget at Mill Island, East Antarctica, over recent decades |
title_full |
Borehole temperatures reveal a changed energy budget at Mill Island, East Antarctica, over recent decades |
title_fullStr |
Borehole temperatures reveal a changed energy budget at Mill Island, East Antarctica, over recent decades |
title_full_unstemmed |
Borehole temperatures reveal a changed energy budget at Mill Island, East Antarctica, over recent decades |
title_sort |
borehole temperatures reveal a changed energy budget at mill island, east antarctica, over recent decades |
publisher |
Copernicus Publications |
publishDate |
2013 |
url |
https://doi.org/10.5194/tc-7-263-2013 https://noa.gwlb.de/receive/cop_mods_00023393 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00023348/tc-7-263-2013.pdf https://tc.copernicus.org/articles/7/263/2013/tc-7-263-2013.pdf |
long_lat |
ENVELOPE(100.667,100.667,-65.500,-65.500) ENVELOPE(100.504,100.504,-65.996,-65.996) |
geographic |
Austral East Antarctica Mill Island Shackleton Shackleton Ice Shelf |
geographic_facet |
Austral East Antarctica Mill Island Shackleton Shackleton Ice Shelf |
genre |
Antarc* Antarctica East Antarctica Ice Shelf Mill Island Sea ice Shackleton Ice Shelf The Cryosphere |
genre_facet |
Antarc* Antarctica East Antarctica Ice Shelf Mill Island Sea ice Shackleton Ice Shelf The Cryosphere |
op_relation |
The Cryosphere -- ˜Theœ Cryosphere -- http://www.bibliothek.uni-regensburg.de/ezeit/?2393169 -- http://www.the-cryosphere.net/ -- 1994-0424 https://doi.org/10.5194/tc-7-263-2013 https://noa.gwlb.de/receive/cop_mods_00023393 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00023348/tc-7-263-2013.pdf https://tc.copernicus.org/articles/7/263/2013/tc-7-263-2013.pdf |
op_rights |
uneingeschränkt info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.5194/tc-7-263-2013 |
container_title |
The Cryosphere |
container_volume |
7 |
container_issue |
1 |
container_start_page |
263 |
op_container_end_page |
273 |
_version_ |
1766144641623654400 |