Modeling the surface mass balance of Penny Ice Cap, Baffin Island, 1959-2099
Abstract Glaciers of Baffin Island and nearby islands of Arctic Canada have experienced rapid mass losses over recent decades. However, projections of loss rates into the 21st century have so far been limited by the availability of model calibration and validation data. In this study, we model the s...
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ftoslouniv:oai:www.duo.uio.no:10852/110059 2024-09-15T17:39:53+00:00 Modeling the surface mass balance of Penny Ice Cap, Baffin Island, 1959-2099 ENEngelskEnglishModeling the surface mass balance of Penny Ice Cap, Baffin Island, 1959-2099 Schaffer, Nicole Copland, Luke Zdanowicz, Christian Hock, Regine 2023-12-04T12:06:28Z http://hdl.handle.net/10852/110059 https://doi.org/10.1017/aog.2023.68 EN eng International Glaciological Society Schaffer, Nicole Copland, Luke Zdanowicz, Christian Hock, Regine . Modeling the surface mass balance of Penny Ice Cap, Baffin Island, 1959-2099. Annals of Glaciology. 2023, 1-13 http://hdl.handle.net/10852/110059 2208349 info:ofi/fmt:kev:mtx:ctx&ctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Annals of Glaciology&rft.volume=&rft.spage=1&rft.date=2023 Annals of Glaciology 1 13 https://doi.org/10.1017/aog.2023.68 Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/ 0260-3055 Journal article Tidsskriftartikkel Peer reviewed PublishedVersion 2023 ftoslouniv https://doi.org/10.1017/aog.2023.68 2024-08-05T14:09:29Z Abstract Glaciers of Baffin Island and nearby islands of Arctic Canada have experienced rapid mass losses over recent decades. However, projections of loss rates into the 21st century have so far been limited by the availability of model calibration and validation data. In this study, we model the surface mass balance of the largest ice cap on Baffin Island, Penny Ice Cap, since 1959, using an enhanced temperature index model calibrated with in situ data from 2006–2014. Subsequently, we project changes to 2099 based on the RCP4.5 climate scenario. Since the mid-1990s, the surface mass balance over Penny Ice Cap has become increasingly negative, particularly after 2005. Using volume–area scaling to account for glacier retreat, peak net mass loss is projected to occur between ~2040 and 2080, and the ice cap is expected to lose 22% (377.4 Gt or 60 m w.e.) of its 2014 ice mass by 2099, contributing 1.0 mm to sea level rise. Our 2015–2099 projections are approximately nine times more sensitive to changes in temperature than precipitation, with an absolute cumulative difference of 566 Gt (90 m w.e.) between +2 and −2°C scenarios, and 63 Gt (10 m w.e.) between +20% and −20% precipitation scenarios. Article in Journal/Newspaper Annals of Glaciology Baffin Island Baffin glacier* Ice cap Penny Ice Cap Universitet i Oslo: Digitale utgivelser ved UiO (DUO) Annals of Glaciology 1 13 |
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Universitet i Oslo: Digitale utgivelser ved UiO (DUO) |
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English |
description |
Abstract Glaciers of Baffin Island and nearby islands of Arctic Canada have experienced rapid mass losses over recent decades. However, projections of loss rates into the 21st century have so far been limited by the availability of model calibration and validation data. In this study, we model the surface mass balance of the largest ice cap on Baffin Island, Penny Ice Cap, since 1959, using an enhanced temperature index model calibrated with in situ data from 2006–2014. Subsequently, we project changes to 2099 based on the RCP4.5 climate scenario. Since the mid-1990s, the surface mass balance over Penny Ice Cap has become increasingly negative, particularly after 2005. Using volume–area scaling to account for glacier retreat, peak net mass loss is projected to occur between ~2040 and 2080, and the ice cap is expected to lose 22% (377.4 Gt or 60 m w.e.) of its 2014 ice mass by 2099, contributing 1.0 mm to sea level rise. Our 2015–2099 projections are approximately nine times more sensitive to changes in temperature than precipitation, with an absolute cumulative difference of 566 Gt (90 m w.e.) between +2 and −2°C scenarios, and 63 Gt (10 m w.e.) between +20% and −20% precipitation scenarios. |
format |
Article in Journal/Newspaper |
author |
Schaffer, Nicole Copland, Luke Zdanowicz, Christian Hock, Regine |
spellingShingle |
Schaffer, Nicole Copland, Luke Zdanowicz, Christian Hock, Regine Modeling the surface mass balance of Penny Ice Cap, Baffin Island, 1959-2099 |
author_facet |
Schaffer, Nicole Copland, Luke Zdanowicz, Christian Hock, Regine |
author_sort |
Schaffer, Nicole |
title |
Modeling the surface mass balance of Penny Ice Cap, Baffin Island, 1959-2099 |
title_short |
Modeling the surface mass balance of Penny Ice Cap, Baffin Island, 1959-2099 |
title_full |
Modeling the surface mass balance of Penny Ice Cap, Baffin Island, 1959-2099 |
title_fullStr |
Modeling the surface mass balance of Penny Ice Cap, Baffin Island, 1959-2099 |
title_full_unstemmed |
Modeling the surface mass balance of Penny Ice Cap, Baffin Island, 1959-2099 |
title_sort |
modeling the surface mass balance of penny ice cap, baffin island, 1959-2099 |
publisher |
International Glaciological Society |
publishDate |
2023 |
url |
http://hdl.handle.net/10852/110059 https://doi.org/10.1017/aog.2023.68 |
genre |
Annals of Glaciology Baffin Island Baffin glacier* Ice cap Penny Ice Cap |
genre_facet |
Annals of Glaciology Baffin Island Baffin glacier* Ice cap Penny Ice Cap |
op_source |
0260-3055 |
op_relation |
Schaffer, Nicole Copland, Luke Zdanowicz, Christian Hock, Regine . Modeling the surface mass balance of Penny Ice Cap, Baffin Island, 1959-2099. Annals of Glaciology. 2023, 1-13 http://hdl.handle.net/10852/110059 2208349 info:ofi/fmt:kev:mtx:ctx&ctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Annals of Glaciology&rft.volume=&rft.spage=1&rft.date=2023 Annals of Glaciology 1 13 https://doi.org/10.1017/aog.2023.68 |
op_rights |
Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/ |
op_doi |
https://doi.org/10.1017/aog.2023.68 |
container_title |
Annals of Glaciology |
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1 |
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13 |
_version_ |
1810483200873463808 |