Calibration of a frontal ablation parameterisation applied to Greenland's peripheral calving glaciers
We calibrate the calving parameterisation implemented in the Open Global Glacier Model via two methods (velocity constraint and surface mass balance (SMB) constraint) and assess the impact of accounting for frontal ablation on the ice volume estimate of Greenland tidewater peripheral glaciers (PGs)....
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Cambridge University Press
2021
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Online Access: | https://doi.org/10.1017/jog.2021.63 https://doaj.org/article/d046077769a44ff58c04585e1c2347bf |
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ftdoajarticles:oai:doaj.org/article:d046077769a44ff58c04585e1c2347bf 2023-05-15T16:21:20+02:00 Calibration of a frontal ablation parameterisation applied to Greenland's peripheral calving glaciers Beatriz Recinos Fabien Maussion Brice Noël Marco Möller Ben Marzeion 2021-12-01T00:00:00Z https://doi.org/10.1017/jog.2021.63 https://doaj.org/article/d046077769a44ff58c04585e1c2347bf EN eng Cambridge University Press https://www.cambridge.org/core/product/identifier/S0022143021000630/type/journal_article https://doaj.org/toc/0022-1430 https://doaj.org/toc/1727-5652 doi:10.1017/jog.2021.63 0022-1430 1727-5652 https://doaj.org/article/d046077769a44ff58c04585e1c2347bf Journal of Glaciology, Vol 67, Pp 1177-1189 (2021) Glacier calving glacier volume ice dynamics Environmental sciences GE1-350 Meteorology. Climatology QC851-999 article 2021 ftdoajarticles https://doi.org/10.1017/jog.2021.63 2023-03-12T01:30:57Z We calibrate the calving parameterisation implemented in the Open Global Glacier Model via two methods (velocity constraint and surface mass balance (SMB) constraint) and assess the impact of accounting for frontal ablation on the ice volume estimate of Greenland tidewater peripheral glaciers (PGs). We estimate an average regional frontal ablation flux of 7.38±3.45 Gta−1 after calibrating the model with two different satellite velocity products, and of 0.69±0.49 Gta−1 if the model is constrained using frontal ablation fluxes derived from independent modelled SMB averaged over an equilibrium reference period (1961–90). This second method makes the assumption that most PGs during that time have an equilibrium between mass gain via SMB and mass loss via frontal ablation. This assumption serves as a basis to assess the order of magnitude of dynamic mass loss of glaciers when compared to the SMB imbalance. The differences between results from both methods indicate how strong the dynamic imbalance might have been for PGs during that reference period. Including frontal ablation increases the estimated regional ice volume of PGs, from 14.47 to 14.64±0.12 mm sea level equivalent when using the SMB method and to 15.84±0.32 mm sea level equivalent when using the velocity method. Article in Journal/Newspaper glacier Greenland Journal of Glaciology Tidewater Directory of Open Access Journals: DOAJ Articles Greenland Journal of Glaciology 67 266 1177 1189 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Glacier calving glacier volume ice dynamics Environmental sciences GE1-350 Meteorology. Climatology QC851-999 |
spellingShingle |
Glacier calving glacier volume ice dynamics Environmental sciences GE1-350 Meteorology. Climatology QC851-999 Beatriz Recinos Fabien Maussion Brice Noël Marco Möller Ben Marzeion Calibration of a frontal ablation parameterisation applied to Greenland's peripheral calving glaciers |
topic_facet |
Glacier calving glacier volume ice dynamics Environmental sciences GE1-350 Meteorology. Climatology QC851-999 |
description |
We calibrate the calving parameterisation implemented in the Open Global Glacier Model via two methods (velocity constraint and surface mass balance (SMB) constraint) and assess the impact of accounting for frontal ablation on the ice volume estimate of Greenland tidewater peripheral glaciers (PGs). We estimate an average regional frontal ablation flux of 7.38±3.45 Gta−1 after calibrating the model with two different satellite velocity products, and of 0.69±0.49 Gta−1 if the model is constrained using frontal ablation fluxes derived from independent modelled SMB averaged over an equilibrium reference period (1961–90). This second method makes the assumption that most PGs during that time have an equilibrium between mass gain via SMB and mass loss via frontal ablation. This assumption serves as a basis to assess the order of magnitude of dynamic mass loss of glaciers when compared to the SMB imbalance. The differences between results from both methods indicate how strong the dynamic imbalance might have been for PGs during that reference period. Including frontal ablation increases the estimated regional ice volume of PGs, from 14.47 to 14.64±0.12 mm sea level equivalent when using the SMB method and to 15.84±0.32 mm sea level equivalent when using the velocity method. |
format |
Article in Journal/Newspaper |
author |
Beatriz Recinos Fabien Maussion Brice Noël Marco Möller Ben Marzeion |
author_facet |
Beatriz Recinos Fabien Maussion Brice Noël Marco Möller Ben Marzeion |
author_sort |
Beatriz Recinos |
title |
Calibration of a frontal ablation parameterisation applied to Greenland's peripheral calving glaciers |
title_short |
Calibration of a frontal ablation parameterisation applied to Greenland's peripheral calving glaciers |
title_full |
Calibration of a frontal ablation parameterisation applied to Greenland's peripheral calving glaciers |
title_fullStr |
Calibration of a frontal ablation parameterisation applied to Greenland's peripheral calving glaciers |
title_full_unstemmed |
Calibration of a frontal ablation parameterisation applied to Greenland's peripheral calving glaciers |
title_sort |
calibration of a frontal ablation parameterisation applied to greenland's peripheral calving glaciers |
publisher |
Cambridge University Press |
publishDate |
2021 |
url |
https://doi.org/10.1017/jog.2021.63 https://doaj.org/article/d046077769a44ff58c04585e1c2347bf |
geographic |
Greenland |
geographic_facet |
Greenland |
genre |
glacier Greenland Journal of Glaciology Tidewater |
genre_facet |
glacier Greenland Journal of Glaciology Tidewater |
op_source |
Journal of Glaciology, Vol 67, Pp 1177-1189 (2021) |
op_relation |
https://www.cambridge.org/core/product/identifier/S0022143021000630/type/journal_article https://doaj.org/toc/0022-1430 https://doaj.org/toc/1727-5652 doi:10.1017/jog.2021.63 0022-1430 1727-5652 https://doaj.org/article/d046077769a44ff58c04585e1c2347bf |
op_doi |
https://doi.org/10.1017/jog.2021.63 |
container_title |
Journal of Glaciology |
container_volume |
67 |
container_issue |
266 |
container_start_page |
1177 |
op_container_end_page |
1189 |
_version_ |
1766009349180751872 |