Albedo decline on Greenland's Mittivakkat Gletscher in a warming climate
Albedo is one of the parameters that govern energy availability for snow and ice surface ablation, and subsequently the surface mass balance conditions of temperate glaciers and ice caps (GIC). Here, we document snow and ice albedo changes for Mittivakkat Gletscher (MG) in Southeast Greenland (2000–...
Published in: | International Journal of Climatology |
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2015
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Online Access: | https://curis.ku.dk/portal/da/publications/albedo-decline-on-greenlands-mittivakkat-gletscher-in-a-warming-climate(f2ff9f8c-115e-4ec0-897a-67f78aaca9be).html https://doi.org/10.1002/joc.4128 |
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ftcopenhagenunip:oai:pure.atira.dk:publications/f2ff9f8c-115e-4ec0-897a-67f78aaca9be 2023-12-03T10:23:04+01:00 Albedo decline on Greenland's Mittivakkat Gletscher in a warming climate Mernild, Sebastian H. Malmros, Jeppe K. Yde, Jacob C. Wilson, Ryan Knudsen, Niels T. Hanna, Edward Fausto, Robert S. Van As, Dirk 2015 https://curis.ku.dk/portal/da/publications/albedo-decline-on-greenlands-mittivakkat-gletscher-in-a-warming-climate(f2ff9f8c-115e-4ec0-897a-67f78aaca9be).html https://doi.org/10.1002/joc.4128 eng eng info:eu-repo/semantics/closedAccess Mernild , S H , Malmros , J K , Yde , J C , Wilson , R , Knudsen , N T , Hanna , E , Fausto , R S & Van As , D 2015 , ' Albedo decline on Greenland's Mittivakkat Gletscher in a warming climate ' , International Journal of Climatology , vol. 35 , no. 9 , pp. 2294–2307 . https://doi.org/10.1002/joc.4128 article 2015 ftcopenhagenunip https://doi.org/10.1002/joc.4128 2023-11-09T00:00:37Z Albedo is one of the parameters that govern energy availability for snow and ice surface ablation, and subsequently the surface mass balance conditions of temperate glaciers and ice caps (GIC). Here, we document snow and ice albedo changes for Mittivakkat Gletscher (MG) in Southeast Greenland (2000–2013), for which an 18-year record of direct surface mass balance measurements exists. The MODerate Imaging Spectroradiometer (MODIS MCD43A3) albedo product was used to study MG's snow and ice albedo, evaluated against supraglacial automatic weather station (AWS) observations. In general, by the end of the mass balance year (EBY), MG's AWS observed bare ice albedo reached ∼0.3 only just exceeding values observed for proglacial bedrock (∼0.2). The analysis reveals negative mean trends in the MODIS-derived MG EBY albedo for the period 2000–2013 with a significant decline in mean glacier-wide albedo of 0.10. The greatest decline in albedo, of 0.25, occurred near the equilibrium line altitude (ELA), an important surface cover and albedo transitional zone. The EBY albedo correlates significantly with ELA and net winter and summer glacier mass balance records. Article in Journal/Newspaper glacier Greenland University of Copenhagen: Research Ela ENVELOPE(9.642,9.642,63.170,63.170) Greenland International Journal of Climatology 35 9 2294 2307 |
institution |
Open Polar |
collection |
University of Copenhagen: Research |
op_collection_id |
ftcopenhagenunip |
language |
English |
description |
Albedo is one of the parameters that govern energy availability for snow and ice surface ablation, and subsequently the surface mass balance conditions of temperate glaciers and ice caps (GIC). Here, we document snow and ice albedo changes for Mittivakkat Gletscher (MG) in Southeast Greenland (2000–2013), for which an 18-year record of direct surface mass balance measurements exists. The MODerate Imaging Spectroradiometer (MODIS MCD43A3) albedo product was used to study MG's snow and ice albedo, evaluated against supraglacial automatic weather station (AWS) observations. In general, by the end of the mass balance year (EBY), MG's AWS observed bare ice albedo reached ∼0.3 only just exceeding values observed for proglacial bedrock (∼0.2). The analysis reveals negative mean trends in the MODIS-derived MG EBY albedo for the period 2000–2013 with a significant decline in mean glacier-wide albedo of 0.10. The greatest decline in albedo, of 0.25, occurred near the equilibrium line altitude (ELA), an important surface cover and albedo transitional zone. The EBY albedo correlates significantly with ELA and net winter and summer glacier mass balance records. |
format |
Article in Journal/Newspaper |
author |
Mernild, Sebastian H. Malmros, Jeppe K. Yde, Jacob C. Wilson, Ryan Knudsen, Niels T. Hanna, Edward Fausto, Robert S. Van As, Dirk |
spellingShingle |
Mernild, Sebastian H. Malmros, Jeppe K. Yde, Jacob C. Wilson, Ryan Knudsen, Niels T. Hanna, Edward Fausto, Robert S. Van As, Dirk Albedo decline on Greenland's Mittivakkat Gletscher in a warming climate |
author_facet |
Mernild, Sebastian H. Malmros, Jeppe K. Yde, Jacob C. Wilson, Ryan Knudsen, Niels T. Hanna, Edward Fausto, Robert S. Van As, Dirk |
author_sort |
Mernild, Sebastian H. |
title |
Albedo decline on Greenland's Mittivakkat Gletscher in a warming climate |
title_short |
Albedo decline on Greenland's Mittivakkat Gletscher in a warming climate |
title_full |
Albedo decline on Greenland's Mittivakkat Gletscher in a warming climate |
title_fullStr |
Albedo decline on Greenland's Mittivakkat Gletscher in a warming climate |
title_full_unstemmed |
Albedo decline on Greenland's Mittivakkat Gletscher in a warming climate |
title_sort |
albedo decline on greenland's mittivakkat gletscher in a warming climate |
publishDate |
2015 |
url |
https://curis.ku.dk/portal/da/publications/albedo-decline-on-greenlands-mittivakkat-gletscher-in-a-warming-climate(f2ff9f8c-115e-4ec0-897a-67f78aaca9be).html https://doi.org/10.1002/joc.4128 |
long_lat |
ENVELOPE(9.642,9.642,63.170,63.170) |
geographic |
Ela Greenland |
geographic_facet |
Ela Greenland |
genre |
glacier Greenland |
genre_facet |
glacier Greenland |
op_source |
Mernild , S H , Malmros , J K , Yde , J C , Wilson , R , Knudsen , N T , Hanna , E , Fausto , R S & Van As , D 2015 , ' Albedo decline on Greenland's Mittivakkat Gletscher in a warming climate ' , International Journal of Climatology , vol. 35 , no. 9 , pp. 2294–2307 . https://doi.org/10.1002/joc.4128 |
op_rights |
info:eu-repo/semantics/closedAccess |
op_doi |
https://doi.org/10.1002/joc.4128 |
container_title |
International Journal of Climatology |
container_volume |
35 |
container_issue |
9 |
container_start_page |
2294 |
op_container_end_page |
2307 |
_version_ |
1784271104200671232 |