Recent change in surface mass-balance trends of glaciers on James Ross Island, north-eastern Antarctic Peninsula
Abstract Glaciers cover 132 900 km 2 around the Antarctic Ice Sheet, but few are subject to annual mass-balance measurements. Lookalike Glacier and Davies Dome on James Ross Island have been monitored since 2009, providing the third longest mass-balance record for the northern Antarctic Peninsula. T...
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crcambridgeupr:10.1017/jog.2024.16 2024-04-28T08:00:09+00:00 Recent change in surface mass-balance trends of glaciers on James Ross Island, north-eastern Antarctic Peninsula Engel, Zbyněk Láska, Kamil Smolíková, Jana Kavan, Jan 2024 http://dx.doi.org/10.1017/jog.2024.16 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0022143024000169 en eng Cambridge University Press (CUP) http://creativecommons.org/licenses/by/4.0/ Journal of Glaciology page 1-15 ISSN 0022-1430 1727-5652 Earth-Surface Processes journal-article 2024 crcambridgeupr https://doi.org/10.1017/jog.2024.16 2024-04-02T06:54:07Z Abstract Glaciers cover 132 900 km 2 around the Antarctic Ice Sheet, but few are subject to annual mass-balance measurements. Lookalike Glacier and Davies Dome on James Ross Island have been monitored since 2009, providing the third longest mass-balance record for the northern Antarctic Peninsula. These glaciers had a balanced mass budget over the period 2009/10–2014/15 but started to lose their mass thereafter. Between 2014/15 and 2020/21, mass change rates were −0.15 ± 0.13 and −0.26 ± 0.11 m w.e. a −1 for Lookalike Glacier and Davies Dome, respectively. The mean equilibrium-line altitudes over this period at Lookalike Glacier (362 ± 18 m a.s.l.) and Davies Dome (>427 ± 22 m a.s.l.) are 51 and >34 m higher compared to the previous 6-year period. The mean accumulation area ratio values determined for the period 2014/15–2020/21 are lower than the balanced-budget ratio indicating that glaciers are out of balance with the current climate. The data confirm the transition from positive to negative mass-balance periods around 2014/15, which is attributed to the change in air temperature trends. The mean summer temperature increased by 0.9°C between the periods 2009/10–2014/15 and 2015/16–2020/21 and melt-season temperatures became predominantly positive. Article in Journal/Newspaper Antarc* Antarctic Antarctic Peninsula Ice Sheet James Ross Island Journal of Glaciology Ross Island Cambridge University Press Journal of Glaciology 1 15 |
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Open Polar |
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Cambridge University Press |
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crcambridgeupr |
language |
English |
topic |
Earth-Surface Processes |
spellingShingle |
Earth-Surface Processes Engel, Zbyněk Láska, Kamil Smolíková, Jana Kavan, Jan Recent change in surface mass-balance trends of glaciers on James Ross Island, north-eastern Antarctic Peninsula |
topic_facet |
Earth-Surface Processes |
description |
Abstract Glaciers cover 132 900 km 2 around the Antarctic Ice Sheet, but few are subject to annual mass-balance measurements. Lookalike Glacier and Davies Dome on James Ross Island have been monitored since 2009, providing the third longest mass-balance record for the northern Antarctic Peninsula. These glaciers had a balanced mass budget over the period 2009/10–2014/15 but started to lose their mass thereafter. Between 2014/15 and 2020/21, mass change rates were −0.15 ± 0.13 and −0.26 ± 0.11 m w.e. a −1 for Lookalike Glacier and Davies Dome, respectively. The mean equilibrium-line altitudes over this period at Lookalike Glacier (362 ± 18 m a.s.l.) and Davies Dome (>427 ± 22 m a.s.l.) are 51 and >34 m higher compared to the previous 6-year period. The mean accumulation area ratio values determined for the period 2014/15–2020/21 are lower than the balanced-budget ratio indicating that glaciers are out of balance with the current climate. The data confirm the transition from positive to negative mass-balance periods around 2014/15, which is attributed to the change in air temperature trends. The mean summer temperature increased by 0.9°C between the periods 2009/10–2014/15 and 2015/16–2020/21 and melt-season temperatures became predominantly positive. |
format |
Article in Journal/Newspaper |
author |
Engel, Zbyněk Láska, Kamil Smolíková, Jana Kavan, Jan |
author_facet |
Engel, Zbyněk Láska, Kamil Smolíková, Jana Kavan, Jan |
author_sort |
Engel, Zbyněk |
title |
Recent change in surface mass-balance trends of glaciers on James Ross Island, north-eastern Antarctic Peninsula |
title_short |
Recent change in surface mass-balance trends of glaciers on James Ross Island, north-eastern Antarctic Peninsula |
title_full |
Recent change in surface mass-balance trends of glaciers on James Ross Island, north-eastern Antarctic Peninsula |
title_fullStr |
Recent change in surface mass-balance trends of glaciers on James Ross Island, north-eastern Antarctic Peninsula |
title_full_unstemmed |
Recent change in surface mass-balance trends of glaciers on James Ross Island, north-eastern Antarctic Peninsula |
title_sort |
recent change in surface mass-balance trends of glaciers on james ross island, north-eastern antarctic peninsula |
publisher |
Cambridge University Press (CUP) |
publishDate |
2024 |
url |
http://dx.doi.org/10.1017/jog.2024.16 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0022143024000169 |
genre |
Antarc* Antarctic Antarctic Peninsula Ice Sheet James Ross Island Journal of Glaciology Ross Island |
genre_facet |
Antarc* Antarctic Antarctic Peninsula Ice Sheet James Ross Island Journal of Glaciology Ross Island |
op_source |
Journal of Glaciology page 1-15 ISSN 0022-1430 1727-5652 |
op_rights |
http://creativecommons.org/licenses/by/4.0/ |
op_doi |
https://doi.org/10.1017/jog.2024.16 |
container_title |
Journal of Glaciology |
container_start_page |
1 |
op_container_end_page |
15 |
_version_ |
1797572514848702464 |