Precipitation trends (1958–2021) on Ammassalik island, south-east Greenland
peer reviewed Along with Arctic warming, climate models project a strong increase in Arctic precipitation in the 21st century as well as an increase in the ratio of liquid to total precipitation. In the precipitation-rich region of south-east Greenland, precipitation changes could locally have signi...
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Language: | English |
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2023
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Online Access: | https://orbi.uliege.be/handle/2268/302204 https://orbi.uliege.be/bitstream/2268/302204/1/VanderSchot_2023_Frontiers.pdf https://doi.org/10.3389/feart.2022.1085499 |
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ftorbi:oai:orbi.ulg.ac.be:2268/302204 2024-04-21T07:44:56+00:00 Precipitation trends (1958–2021) on Ammassalik island, south-east Greenland van der Schot, Jorrit Abermann, Jakob Silva, Tiago Jensen, Caroline Drost Noël, Brice Schöner, Wolfgang 2023-01-11 https://orbi.uliege.be/handle/2268/302204 https://orbi.uliege.be/bitstream/2268/302204/1/VanderSchot_2023_Frontiers.pdf https://doi.org/10.3389/feart.2022.1085499 en eng Frontiers Media S.A. https://www.frontiersin.org/articles/10.3389/feart.2022.1085499/full urn:issn:2296-6463 https://orbi.uliege.be/handle/2268/302204 info:hdl:2268/302204 https://orbi.uliege.be/bitstream/2268/302204/1/VanderSchot_2023_Frontiers.pdf doi:10.3389/feart.2022.1085499 scopus-id:2-s2.0-85146988614 open access http://purl.org/coar/access_right/c_abf2 info:eu-repo/semantics/openAccess Frontiers in Earth Science, 10 (2023-01-11) air temperature (AT) climate change Greenland Mittivakkat glacier precipitation RACMO2 rainfall snowfall Earth and Planetary Sciences (all) General Earth and Planetary Sciences Physical chemical mathematical & earth Sciences Earth sciences & physical geography Physique chimie mathématiques & sciences de la terre Sciences de la terre & géographie physique journal article http://purl.org/coar/resource_type/c_6501 info:eu-repo/semantics/article peer reviewed 2023 ftorbi https://doi.org/10.3389/feart.2022.1085499 2024-03-27T14:57:58Z peer reviewed Along with Arctic warming, climate models project a strong increase in Arctic precipitation in the 21st century as well as an increase in the ratio of liquid to total precipitation. In the precipitation-rich region of south-east Greenland, precipitation changes could locally have significant impacts on runoff. However, climate data are sparse in this remote region. This study focuses on improving our understanding of the past precipitation changes on Ammassalik island in south-east Greenland between 1958 and 2021. To assess past changes in air temperature at 2-meter and precipitation, output from a regional polar climate model (RACMO2.3p2) is evaluated with measurements from automatic weather stations in Tasiilaq and on Mittivakkat glacier. In addition, RACMO2.3p2 is used to assess past seasonal changes in air temperature at 2-meter, precipitation amount, precipitation phase and the altitude of the rain/snow boundary. We find that the climate model accurately represents the monthly average observed air temperature at 2-meter. While total precipitation is overestimated, interannual variability of precipitation is properly captured. We report a significant increase of summer temperature at 2-meter of +0.3°C/decade (p<0.01) at Mittivakkat glacier and +0.2°C/decade (p<0.01) in Tasiilaq in 1958–2021. For the subperiod 1990–2019, the trend in annual averages of temperature at 2-meter in Tasiilaq (+0.8°C/decade, p=0.02) corresponds well to known temperature trends on the Greenland Ice Sheet within the same period. On Mittivakkat glacier a significant trend is not detected within this subperiod (+0.2°C/decade, p=0.25). The modelled liquid precipitation ratio on Ammassalik island increased in all summer months (1958–2015) by +2.0/+1.9/+1.8%/decade in June/July/August respectively. In July and August, these trends were stronger at higher elevations. No statistical evidence is found for trends in other seasons. We also identify monthly increases in the altitude of the rain-to-snow boundary ... Article in Journal/Newspaper Ammassalik Climate change East Greenland glacier Greenland Ice Sheet Tasiilaq University of Liège: ORBi (Open Repository and Bibliography) Frontiers in Earth Science 10 |
institution |
Open Polar |
collection |
University of Liège: ORBi (Open Repository and Bibliography) |
op_collection_id |
ftorbi |
language |
English |
topic |
air temperature (AT) climate change Greenland Mittivakkat glacier precipitation RACMO2 rainfall snowfall Earth and Planetary Sciences (all) General Earth and Planetary Sciences Physical chemical mathematical & earth Sciences Earth sciences & physical geography Physique chimie mathématiques & sciences de la terre Sciences de la terre & géographie physique |
spellingShingle |
air temperature (AT) climate change Greenland Mittivakkat glacier precipitation RACMO2 rainfall snowfall Earth and Planetary Sciences (all) General Earth and Planetary Sciences Physical chemical mathematical & earth Sciences Earth sciences & physical geography Physique chimie mathématiques & sciences de la terre Sciences de la terre & géographie physique van der Schot, Jorrit Abermann, Jakob Silva, Tiago Jensen, Caroline Drost Noël, Brice Schöner, Wolfgang Precipitation trends (1958–2021) on Ammassalik island, south-east Greenland |
topic_facet |
air temperature (AT) climate change Greenland Mittivakkat glacier precipitation RACMO2 rainfall snowfall Earth and Planetary Sciences (all) General Earth and Planetary Sciences Physical chemical mathematical & earth Sciences Earth sciences & physical geography Physique chimie mathématiques & sciences de la terre Sciences de la terre & géographie physique |
description |
peer reviewed Along with Arctic warming, climate models project a strong increase in Arctic precipitation in the 21st century as well as an increase in the ratio of liquid to total precipitation. In the precipitation-rich region of south-east Greenland, precipitation changes could locally have significant impacts on runoff. However, climate data are sparse in this remote region. This study focuses on improving our understanding of the past precipitation changes on Ammassalik island in south-east Greenland between 1958 and 2021. To assess past changes in air temperature at 2-meter and precipitation, output from a regional polar climate model (RACMO2.3p2) is evaluated with measurements from automatic weather stations in Tasiilaq and on Mittivakkat glacier. In addition, RACMO2.3p2 is used to assess past seasonal changes in air temperature at 2-meter, precipitation amount, precipitation phase and the altitude of the rain/snow boundary. We find that the climate model accurately represents the monthly average observed air temperature at 2-meter. While total precipitation is overestimated, interannual variability of precipitation is properly captured. We report a significant increase of summer temperature at 2-meter of +0.3°C/decade (p<0.01) at Mittivakkat glacier and +0.2°C/decade (p<0.01) in Tasiilaq in 1958–2021. For the subperiod 1990–2019, the trend in annual averages of temperature at 2-meter in Tasiilaq (+0.8°C/decade, p=0.02) corresponds well to known temperature trends on the Greenland Ice Sheet within the same period. On Mittivakkat glacier a significant trend is not detected within this subperiod (+0.2°C/decade, p=0.25). The modelled liquid precipitation ratio on Ammassalik island increased in all summer months (1958–2015) by +2.0/+1.9/+1.8%/decade in June/July/August respectively. In July and August, these trends were stronger at higher elevations. No statistical evidence is found for trends in other seasons. We also identify monthly increases in the altitude of the rain-to-snow boundary ... |
format |
Article in Journal/Newspaper |
author |
van der Schot, Jorrit Abermann, Jakob Silva, Tiago Jensen, Caroline Drost Noël, Brice Schöner, Wolfgang |
author_facet |
van der Schot, Jorrit Abermann, Jakob Silva, Tiago Jensen, Caroline Drost Noël, Brice Schöner, Wolfgang |
author_sort |
van der Schot, Jorrit |
title |
Precipitation trends (1958–2021) on Ammassalik island, south-east Greenland |
title_short |
Precipitation trends (1958–2021) on Ammassalik island, south-east Greenland |
title_full |
Precipitation trends (1958–2021) on Ammassalik island, south-east Greenland |
title_fullStr |
Precipitation trends (1958–2021) on Ammassalik island, south-east Greenland |
title_full_unstemmed |
Precipitation trends (1958–2021) on Ammassalik island, south-east Greenland |
title_sort |
precipitation trends (1958–2021) on ammassalik island, south-east greenland |
publisher |
Frontiers Media S.A. |
publishDate |
2023 |
url |
https://orbi.uliege.be/handle/2268/302204 https://orbi.uliege.be/bitstream/2268/302204/1/VanderSchot_2023_Frontiers.pdf https://doi.org/10.3389/feart.2022.1085499 |
genre |
Ammassalik Climate change East Greenland glacier Greenland Ice Sheet Tasiilaq |
genre_facet |
Ammassalik Climate change East Greenland glacier Greenland Ice Sheet Tasiilaq |
op_source |
Frontiers in Earth Science, 10 (2023-01-11) |
op_relation |
https://www.frontiersin.org/articles/10.3389/feart.2022.1085499/full urn:issn:2296-6463 https://orbi.uliege.be/handle/2268/302204 info:hdl:2268/302204 https://orbi.uliege.be/bitstream/2268/302204/1/VanderSchot_2023_Frontiers.pdf doi:10.3389/feart.2022.1085499 scopus-id:2-s2.0-85146988614 |
op_rights |
open access http://purl.org/coar/access_right/c_abf2 info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.3389/feart.2022.1085499 |
container_title |
Frontiers in Earth Science |
container_volume |
10 |
_version_ |
1796938148581736448 |