Snow distribution and melt modeling for Mittivakkat Glacier, Ammassalik Island, southeast Greenland
A physically based snow-evolution modeling system (SnowModel) that includes four submodels - the Micrometeorological Model (MicroMet), EnBal, SnowPack, and SnowTran-3D - was used to simulate five full-year evolutions of snow accumulation, distribution, sublimation, and surface melt on the Mittivakka...
Published in: | Journal of Hydrometeorology |
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Format: | Article in Journal/Newspaper |
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ftuniaarhuspubl:oai:pure.atira.dk:publications/73f34a8b-706f-47bb-b0d2-a55b526f1534 2023-05-15T13:22:18+02:00 Snow distribution and melt modeling for Mittivakkat Glacier, Ammassalik Island, southeast Greenland Mernild, Sebastian H. Liston, Glen E. Hasholt, Bent Knudsen, Niels T. 2006-08-01 https://pure.au.dk/portal/da/publications/snow-distribution-and-melt-modeling-for-mittivakkat-glacier-ammassalik-island-southeast-greenland(73f34a8b-706f-47bb-b0d2-a55b526f1534).html https://doi.org/10.1175/JHM522.1 http://www.scopus.com/inward/record.url?scp=33748746578&partnerID=8YFLogxK eng eng info:eu-repo/semantics/restrictedAccess Mernild , S H , Liston , G E , Hasholt , B & Knudsen , N T 2006 , ' Snow distribution and melt modeling for Mittivakkat Glacier, Ammassalik Island, southeast Greenland ' , Journal of Hydrometeorology , vol. 7 , no. 4 , pp. 808-824 . https://doi.org/10.1175/JHM522.1 article 2006 ftuniaarhuspubl https://doi.org/10.1175/JHM522.1 2020-07-18T22:17:37Z A physically based snow-evolution modeling system (SnowModel) that includes four submodels - the Micrometeorological Model (MicroMet), EnBal, SnowPack, and SnowTran-3D - was used to simulate five full-year evolutions of snow accumulation, distribution, sublimation, and surface melt on the Mittivakkat Glacier, in southeast Greenland. Model modifications were implemented and used 1) to adjust underestimated observed meteorological station solid precipitation until the model matched the observed Mittivakkat Glacier winter mass balance, and 2) to simulate glacier-ice melt after the winter snow accumulation had ablated. Meteorological observations from two meteorological stations were used as model inputs, and glaciological mass balance observations were used for model calibration and testing of solid precipitation observations. The modeled end-of-winter snow-water equivalent (w.eq.) accumulation increased with elevation from 200 to 700 m above sea level (ASL) in response to both elevation and topographic influences, and the simulated end-of-summer location of the glacier equilibrium line altitude was confirmed by glaciological observations and digital images. The modeled test-period-averaged annual mass balance was 150 mm w.eq. yr -1 , or ∼15%, less than the observed. Approximately 12% of the precipitation was returned to the atmosphere by sublimation. Glacier-averaged mean annual modeled surface melt ranged from 1272 to 2221 rum w.eq. yr -1 , of which snowmelt contributed from 610 to 1040 mm w.eq. yr -1 . The surface-melt period started between mid-May and the beginning of June, and lasted until mid-September; there were as many as 120 melt days at the glacier terminus. The model simulated a Mittivakkat Glacier recession averaging -616 mm w.eq. yr -1 , almost equal to the observed -600 mm w.eq. yr - 1. Article in Journal/Newspaper Ammassalik glacier Greenland Aarhus University: Research Greenland Journal of Hydrometeorology 7 4 808 824 |
institution |
Open Polar |
collection |
Aarhus University: Research |
op_collection_id |
ftuniaarhuspubl |
language |
English |
description |
A physically based snow-evolution modeling system (SnowModel) that includes four submodels - the Micrometeorological Model (MicroMet), EnBal, SnowPack, and SnowTran-3D - was used to simulate five full-year evolutions of snow accumulation, distribution, sublimation, and surface melt on the Mittivakkat Glacier, in southeast Greenland. Model modifications were implemented and used 1) to adjust underestimated observed meteorological station solid precipitation until the model matched the observed Mittivakkat Glacier winter mass balance, and 2) to simulate glacier-ice melt after the winter snow accumulation had ablated. Meteorological observations from two meteorological stations were used as model inputs, and glaciological mass balance observations were used for model calibration and testing of solid precipitation observations. The modeled end-of-winter snow-water equivalent (w.eq.) accumulation increased with elevation from 200 to 700 m above sea level (ASL) in response to both elevation and topographic influences, and the simulated end-of-summer location of the glacier equilibrium line altitude was confirmed by glaciological observations and digital images. The modeled test-period-averaged annual mass balance was 150 mm w.eq. yr -1 , or ∼15%, less than the observed. Approximately 12% of the precipitation was returned to the atmosphere by sublimation. Glacier-averaged mean annual modeled surface melt ranged from 1272 to 2221 rum w.eq. yr -1 , of which snowmelt contributed from 610 to 1040 mm w.eq. yr -1 . The surface-melt period started between mid-May and the beginning of June, and lasted until mid-September; there were as many as 120 melt days at the glacier terminus. The model simulated a Mittivakkat Glacier recession averaging -616 mm w.eq. yr -1 , almost equal to the observed -600 mm w.eq. yr - 1. |
format |
Article in Journal/Newspaper |
author |
Mernild, Sebastian H. Liston, Glen E. Hasholt, Bent Knudsen, Niels T. |
spellingShingle |
Mernild, Sebastian H. Liston, Glen E. Hasholt, Bent Knudsen, Niels T. Snow distribution and melt modeling for Mittivakkat Glacier, Ammassalik Island, southeast Greenland |
author_facet |
Mernild, Sebastian H. Liston, Glen E. Hasholt, Bent Knudsen, Niels T. |
author_sort |
Mernild, Sebastian H. |
title |
Snow distribution and melt modeling for Mittivakkat Glacier, Ammassalik Island, southeast Greenland |
title_short |
Snow distribution and melt modeling for Mittivakkat Glacier, Ammassalik Island, southeast Greenland |
title_full |
Snow distribution and melt modeling for Mittivakkat Glacier, Ammassalik Island, southeast Greenland |
title_fullStr |
Snow distribution and melt modeling for Mittivakkat Glacier, Ammassalik Island, southeast Greenland |
title_full_unstemmed |
Snow distribution and melt modeling for Mittivakkat Glacier, Ammassalik Island, southeast Greenland |
title_sort |
snow distribution and melt modeling for mittivakkat glacier, ammassalik island, southeast greenland |
publishDate |
2006 |
url |
https://pure.au.dk/portal/da/publications/snow-distribution-and-melt-modeling-for-mittivakkat-glacier-ammassalik-island-southeast-greenland(73f34a8b-706f-47bb-b0d2-a55b526f1534).html https://doi.org/10.1175/JHM522.1 http://www.scopus.com/inward/record.url?scp=33748746578&partnerID=8YFLogxK |
geographic |
Greenland |
geographic_facet |
Greenland |
genre |
Ammassalik glacier Greenland |
genre_facet |
Ammassalik glacier Greenland |
op_source |
Mernild , S H , Liston , G E , Hasholt , B & Knudsen , N T 2006 , ' Snow distribution and melt modeling for Mittivakkat Glacier, Ammassalik Island, southeast Greenland ' , Journal of Hydrometeorology , vol. 7 , no. 4 , pp. 808-824 . https://doi.org/10.1175/JHM522.1 |
op_rights |
info:eu-repo/semantics/restrictedAccess |
op_doi |
https://doi.org/10.1175/JHM522.1 |
container_title |
Journal of Hydrometeorology |
container_volume |
7 |
container_issue |
4 |
container_start_page |
808 |
op_container_end_page |
824 |
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1766364191504990208 |