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 v...
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2021
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ftdoajarticles: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 2021-08-01T00:00:00Z https://doi.org/10.5194/tc-15-3877-2021 https://doaj.org/article/510bc9dd275946deb280e7300e2e6a95 EN eng Copernicus Publications https://tc.copernicus.org/articles/15/3877/2021/tc-15-3877-2021.pdf https://doaj.org/toc/1994-0416 https://doaj.org/toc/1994-0424 doi:10.5194/tc-15-3877-2021 1994-0416 1994-0424 https://doaj.org/article/510bc9dd275946deb280e7300e2e6a95 The Cryosphere, Vol 15, Pp 3877-3896 (2021) Environmental sciences GE1-350 Geology QE1-996.5 article 2021 ftdoajarticles https://doi.org/10.5194/tc-15-3877-2021 2022-12-31T12:30:06Z 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 Directory of Open Access Journals: DOAJ Articles Greenland Nioghalvfjerdsfjorden ENVELOPE(-21.500,-21.500,79.500,79.500) The Cryosphere 15 8 3877 3896 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Environmental sciences GE1-350 Geology QE1-996.5 |
spellingShingle |
Environmental sciences GE1-350 Geology QE1-996.5 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 |
Environmental sciences GE1-350 Geology QE1-996.5 |
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://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 |
https://tc.copernicus.org/articles/15/3877/2021/tc-15-3877-2021.pdf https://doaj.org/toc/1994-0416 https://doaj.org/toc/1994-0424 doi:10.5194/tc-15-3877-2021 1994-0416 1994-0424 https://doaj.org/article/510bc9dd275946deb280e7300e2e6a95 |
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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1766009004535840768 |