The distribution and evolution of supraglacial lakes on 79° N Glacier (north-eastern Greenland) and interannual climatic controls
The Nioghalvfjerdsfjorden glacier (also known as the 79∘ North Glacier) drains approximately 8 % of the Greenland Ice Sheet. Supraglacial lakes (SGLs), or surface melt ponds, are a persistent summertime feature and are thought to drain rapidly to the base of the glacier and influence seasonal ice ve...
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Copernicus Publications
2021
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fttriple:oai:gotriple.eu:oai:doaj.org/article:510bc9dd275946deb280e7300e2e6a95 2023-05-15T16:20:59+02:00 The distribution and evolution of supraglacial lakes on 79° N Glacier (north-eastern Greenland) and interannual climatic controls J. V. Turton P. Hochreuther N. Reimann M. T. Blau 2021-08-01 https://doi.org/10.5194/tc-15-3877-2021 https://tc.copernicus.org/articles/15/3877/2021/tc-15-3877-2021.pdf https://doaj.org/article/510bc9dd275946deb280e7300e2e6a95 en eng Copernicus Publications doi:10.5194/tc-15-3877-2021 1994-0416 1994-0424 https://tc.copernicus.org/articles/15/3877/2021/tc-15-3877-2021.pdf https://doaj.org/article/510bc9dd275946deb280e7300e2e6a95 undefined The Cryosphere, Vol 15, Pp 3877-3896 (2021) geo envir Journal Article https://vocabularies.coar-repositories.org/resource_types/c_6501/ 2021 fttriple https://doi.org/10.5194/tc-15-3877-2021 2023-01-22T19:26:25Z The Nioghalvfjerdsfjorden glacier (also known as the 79∘ North Glacier) drains approximately 8 % of the Greenland Ice Sheet. Supraglacial lakes (SGLs), or surface melt ponds, are a persistent summertime feature and are thought to drain rapidly to the base of the glacier and influence seasonal ice velocity. However, seasonal development and spatial distribution of SGLs in the north-east of Greenland are poorly understood, leaving a substantial error in the estimate of meltwater and its impacts on ice velocity. Using results from an automated detection of melt ponds, atmospheric and surface mass balance modelling, and reanalysis products, we investigate the role of specific climatic conditions in melt onset, extent, and duration from 2016 to 2019. The summers of 2016 and 2019 were characterised by above-average air temperatures, particularly in June, as well as a number of rainfall events, which led to extensive melt ponds to elevations up to 1600 m. Conversely, 2018 was particularly cold, with a large accumulated snowpack, which limited the development of lakes to altitudes less than 800 m. There is evidence of inland expansion and increases in the total area of lakes compared to the early 2000s, as projected by future global warming scenarios. Article in Journal/Newspaper glacier Greenland Ice Sheet Nioghalvfjerdsfjorden The Cryosphere Unknown Greenland Nioghalvfjerdsfjorden ENVELOPE(-21.500,-21.500,79.500,79.500) The Cryosphere 15 8 3877 3896 |
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Open Polar |
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Unknown |
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fttriple |
language |
English |
topic |
geo envir |
spellingShingle |
geo envir J. V. Turton P. Hochreuther N. Reimann M. T. Blau The distribution and evolution of supraglacial lakes on 79° N Glacier (north-eastern Greenland) and interannual climatic controls |
topic_facet |
geo envir |
description |
The Nioghalvfjerdsfjorden glacier (also known as the 79∘ North Glacier) drains approximately 8 % of the Greenland Ice Sheet. Supraglacial lakes (SGLs), or surface melt ponds, are a persistent summertime feature and are thought to drain rapidly to the base of the glacier and influence seasonal ice velocity. However, seasonal development and spatial distribution of SGLs in the north-east of Greenland are poorly understood, leaving a substantial error in the estimate of meltwater and its impacts on ice velocity. Using results from an automated detection of melt ponds, atmospheric and surface mass balance modelling, and reanalysis products, we investigate the role of specific climatic conditions in melt onset, extent, and duration from 2016 to 2019. The summers of 2016 and 2019 were characterised by above-average air temperatures, particularly in June, as well as a number of rainfall events, which led to extensive melt ponds to elevations up to 1600 m. Conversely, 2018 was particularly cold, with a large accumulated snowpack, which limited the development of lakes to altitudes less than 800 m. There is evidence of inland expansion and increases in the total area of lakes compared to the early 2000s, as projected by future global warming scenarios. |
format |
Article in Journal/Newspaper |
author |
J. V. Turton P. Hochreuther N. Reimann M. T. Blau |
author_facet |
J. V. Turton P. Hochreuther N. Reimann M. T. Blau |
author_sort |
J. V. Turton |
title |
The distribution and evolution of supraglacial lakes on 79° N Glacier (north-eastern Greenland) and interannual climatic controls |
title_short |
The distribution and evolution of supraglacial lakes on 79° N Glacier (north-eastern Greenland) and interannual climatic controls |
title_full |
The distribution and evolution of supraglacial lakes on 79° N Glacier (north-eastern Greenland) and interannual climatic controls |
title_fullStr |
The distribution and evolution of supraglacial lakes on 79° N Glacier (north-eastern Greenland) and interannual climatic controls |
title_full_unstemmed |
The distribution and evolution of supraglacial lakes on 79° N Glacier (north-eastern Greenland) and interannual climatic controls |
title_sort |
distribution and evolution of supraglacial lakes on 79° n glacier (north-eastern greenland) and interannual climatic controls |
publisher |
Copernicus Publications |
publishDate |
2021 |
url |
https://doi.org/10.5194/tc-15-3877-2021 https://tc.copernicus.org/articles/15/3877/2021/tc-15-3877-2021.pdf https://doaj.org/article/510bc9dd275946deb280e7300e2e6a95 |
long_lat |
ENVELOPE(-21.500,-21.500,79.500,79.500) |
geographic |
Greenland Nioghalvfjerdsfjorden |
geographic_facet |
Greenland Nioghalvfjerdsfjorden |
genre |
glacier Greenland Ice Sheet Nioghalvfjerdsfjorden The Cryosphere |
genre_facet |
glacier Greenland Ice Sheet Nioghalvfjerdsfjorden The Cryosphere |
op_source |
The Cryosphere, Vol 15, Pp 3877-3896 (2021) |
op_relation |
doi:10.5194/tc-15-3877-2021 1994-0416 1994-0424 https://tc.copernicus.org/articles/15/3877/2021/tc-15-3877-2021.pdf https://doaj.org/article/510bc9dd275946deb280e7300e2e6a95 |
op_rights |
undefined |
op_doi |
https://doi.org/10.5194/tc-15-3877-2021 |
container_title |
The Cryosphere |
container_volume |
15 |
container_issue |
8 |
container_start_page |
3877 |
op_container_end_page |
3896 |
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1766009003808129024 |