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)....
Published in: | Journal of Glaciology |
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2021
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ftnerc:oai:nora.nerc.ac.uk:530778 2023-05-15T16:21:31+02:00 Calibration of a frontal ablation parameterisation applied to Greenland's peripheral calving glaciers Recinos Rivas, Beatriz Maussion, Fabien Noël, Brice Möller, Marco Marzeion, Ben 2021-06-07 text http://nora.nerc.ac.uk/id/eprint/530778/ https://nora.nerc.ac.uk/id/eprint/530778/1/calibration-of-a-frontal-ablation-parameterisation-applied-to-greenlands-peripheral-calving-glaciers%20%281%29.pdf https://doi.org/10.1017/jog.2021.63 en eng https://nora.nerc.ac.uk/id/eprint/530778/1/calibration-of-a-frontal-ablation-parameterisation-applied-to-greenlands-peripheral-calving-glaciers%20%281%29.pdf Recinos Rivas, Beatriz orcid:0000-0002-0647-8131 Maussion, Fabien; Noël, Brice; Möller, Marco; Marzeion, Ben. 2021 Calibration of a frontal ablation parameterisation applied to Greenland's peripheral calving glaciers. Journal of Glaciology. 1-13. https://doi.org/10.1017/jog.2021.63 <https://doi.org/10.1017/jog.2021.63> cc_by_4 CC-BY Publication - Article PeerReviewed 2021 ftnerc https://doi.org/10.1017/jog.2021.63 2023-02-04T19:52:24Z 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 Natural Environment Research Council: NERC Open Research Archive Greenland Journal of Glaciology 67 266 1177 1189 |
institution |
Open Polar |
collection |
Natural Environment Research Council: NERC Open Research Archive |
op_collection_id |
ftnerc |
language |
English |
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 |
Recinos Rivas, Beatriz Maussion, Fabien Noël, Brice Möller, Marco Marzeion, Ben |
spellingShingle |
Recinos Rivas, Beatriz Maussion, Fabien Noël, Brice Möller, Marco Marzeion, Ben Calibration of a frontal ablation parameterisation applied to Greenland's peripheral calving glaciers |
author_facet |
Recinos Rivas, Beatriz Maussion, Fabien Noël, Brice Möller, Marco Marzeion, Ben |
author_sort |
Recinos Rivas, Beatriz |
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 |
publishDate |
2021 |
url |
http://nora.nerc.ac.uk/id/eprint/530778/ https://nora.nerc.ac.uk/id/eprint/530778/1/calibration-of-a-frontal-ablation-parameterisation-applied-to-greenlands-peripheral-calving-glaciers%20%281%29.pdf https://doi.org/10.1017/jog.2021.63 |
geographic |
Greenland |
geographic_facet |
Greenland |
genre |
glacier Greenland Journal of Glaciology Tidewater |
genre_facet |
glacier Greenland Journal of Glaciology Tidewater |
op_relation |
https://nora.nerc.ac.uk/id/eprint/530778/1/calibration-of-a-frontal-ablation-parameterisation-applied-to-greenlands-peripheral-calving-glaciers%20%281%29.pdf Recinos Rivas, Beatriz orcid:0000-0002-0647-8131 Maussion, Fabien; Noël, Brice; Möller, Marco; Marzeion, Ben. 2021 Calibration of a frontal ablation parameterisation applied to Greenland's peripheral calving glaciers. Journal of Glaciology. 1-13. https://doi.org/10.1017/jog.2021.63 <https://doi.org/10.1017/jog.2021.63> |
op_rights |
cc_by_4 |
op_rightsnorm |
CC-BY |
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_ |
1766009518119976960 |