ArcticBeach v1.0: A physics-based parameterization of pan-Arctic coastline erosion
In the Arctic, air temperatures are increasing and sea ice is declining, resulting in larger waves and a longer open water season, all of which intensify the thaw and erosion of ice-rich coasts. Climate change has been shown to increase the rate of Arctic coastal erosion, causing problems for Arctic...
Published in: | Frontiers in Earth Science |
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Language: | English |
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Humboldt-Universität zu Berlin
2022
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Online Access: | http://edoc.hu-berlin.de/18452/26602 https://nbn-resolving.org/urn:nbn:de:kobv:11-110-18452/26602-8 https://doi.org/10.3389/feart.2022.962208 https://doi.org/10.18452/25918 |
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fthuberlin:oai:edoc.hu-berlin.de:18452/26602 2023-12-03T10:15:49+01:00 ArcticBeach v1.0: A physics-based parameterization of pan-Arctic coastline erosion Rolph, Rebecca Overduin, Pier Ravens, Thomas Lantuit, Hugues Langer, Moritz 2022-10-11 application/pdf http://edoc.hu-berlin.de/18452/26602 https://nbn-resolving.org/urn:nbn:de:kobv:11-110-18452/26602-8 https://doi.org/10.3389/feart.2022.962208 https://doi.org/10.18452/25918 eng eng Humboldt-Universität zu Berlin http://edoc.hu-berlin.de/18452/26602 urn:nbn:de:kobv:11-110-18452/26602-8 doi:10.3389/feart.2022.962208 http://dx.doi.org/10.18452/25918 2296-6463 (CC BY 4.0) Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/ permafrost erosion modelling arctic climate change 550 Geowissenschaften ddc:550 article doc-type:article publishedVersion 2022 fthuberlin https://doi.org/10.3389/feart.2022.96220810.18452/25918 2023-11-05T23:36:07Z In the Arctic, air temperatures are increasing and sea ice is declining, resulting in larger waves and a longer open water season, all of which intensify the thaw and erosion of ice-rich coasts. Climate change has been shown to increase the rate of Arctic coastal erosion, causing problems for Arctic cultural heritage, existing industrial, military, and civil infrastructure, as well as changes in nearshore biogeochemistry. Numerical models that reproduce historical and project future Arctic erosion rates are necessary to understand how further climate change will affect these problems, and no such model yet exists to simulate the physics of erosion on a pan-Arctic scale. We have coupled a bathystrophic storm surge model to a simplified physical erosion model of a permafrost coastline. This Arctic erosion model, called ArcticBeach v1.0, is a first step toward a physical parameterization of Arctic shoreline erosion for larger-scale models. It is forced by wind speed and direction, wave period and height, sea surface temperature, all of which are masked during times of sea ice cover near the coastline. Model tuning requires observed historical retreat rates (at least one value), as well as rough nearshore bathymetry. These parameters are already available on a pan-Arctic scale. The model is validated at three study sites at 1) Drew Point (DP), Alaska, 2) Mamontovy Khayata (MK), Siberia, and 3) Veslebogen Cliffs, Svalbard. Simulated cumulative retreat rates for DP and MK respectively (169 and 170 m) over the time periods studied at each site (2007–2016, and 1995–2018) are found to the same order of magnitude as observed cumulative retreat (172 and 120 m). The rocky Veslebogen cliffs have small observed cumulative retreat rates (0.05 m over 2014–2016), and our model was also able to reproduce this same order of magnitude of retreat (0.08 m). Given the large differences in geomorphology between the study sites, this study provides a proof-of-concept that ArcticBeach v1.0 can be applied on very different permafrost ... Article in Journal/Newspaper Arctic Climate change Ice permafrost Sea ice Svalbard Alaska Siberia Open-Access-Publikationsserver der Humboldt-Universität: edoc-Server Arctic Svalbard Veslebogen ENVELOPE(15.500,15.500,77.000,77.000) Frontiers in Earth Science 10 |
institution |
Open Polar |
collection |
Open-Access-Publikationsserver der Humboldt-Universität: edoc-Server |
op_collection_id |
fthuberlin |
language |
English |
topic |
permafrost erosion modelling arctic climate change 550 Geowissenschaften ddc:550 |
spellingShingle |
permafrost erosion modelling arctic climate change 550 Geowissenschaften ddc:550 Rolph, Rebecca Overduin, Pier Ravens, Thomas Lantuit, Hugues Langer, Moritz ArcticBeach v1.0: A physics-based parameterization of pan-Arctic coastline erosion |
topic_facet |
permafrost erosion modelling arctic climate change 550 Geowissenschaften ddc:550 |
description |
In the Arctic, air temperatures are increasing and sea ice is declining, resulting in larger waves and a longer open water season, all of which intensify the thaw and erosion of ice-rich coasts. Climate change has been shown to increase the rate of Arctic coastal erosion, causing problems for Arctic cultural heritage, existing industrial, military, and civil infrastructure, as well as changes in nearshore biogeochemistry. Numerical models that reproduce historical and project future Arctic erosion rates are necessary to understand how further climate change will affect these problems, and no such model yet exists to simulate the physics of erosion on a pan-Arctic scale. We have coupled a bathystrophic storm surge model to a simplified physical erosion model of a permafrost coastline. This Arctic erosion model, called ArcticBeach v1.0, is a first step toward a physical parameterization of Arctic shoreline erosion for larger-scale models. It is forced by wind speed and direction, wave period and height, sea surface temperature, all of which are masked during times of sea ice cover near the coastline. Model tuning requires observed historical retreat rates (at least one value), as well as rough nearshore bathymetry. These parameters are already available on a pan-Arctic scale. The model is validated at three study sites at 1) Drew Point (DP), Alaska, 2) Mamontovy Khayata (MK), Siberia, and 3) Veslebogen Cliffs, Svalbard. Simulated cumulative retreat rates for DP and MK respectively (169 and 170 m) over the time periods studied at each site (2007–2016, and 1995–2018) are found to the same order of magnitude as observed cumulative retreat (172 and 120 m). The rocky Veslebogen cliffs have small observed cumulative retreat rates (0.05 m over 2014–2016), and our model was also able to reproduce this same order of magnitude of retreat (0.08 m). Given the large differences in geomorphology between the study sites, this study provides a proof-of-concept that ArcticBeach v1.0 can be applied on very different permafrost ... |
format |
Article in Journal/Newspaper |
author |
Rolph, Rebecca Overduin, Pier Ravens, Thomas Lantuit, Hugues Langer, Moritz |
author_facet |
Rolph, Rebecca Overduin, Pier Ravens, Thomas Lantuit, Hugues Langer, Moritz |
author_sort |
Rolph, Rebecca |
title |
ArcticBeach v1.0: A physics-based parameterization of pan-Arctic coastline erosion |
title_short |
ArcticBeach v1.0: A physics-based parameterization of pan-Arctic coastline erosion |
title_full |
ArcticBeach v1.0: A physics-based parameterization of pan-Arctic coastline erosion |
title_fullStr |
ArcticBeach v1.0: A physics-based parameterization of pan-Arctic coastline erosion |
title_full_unstemmed |
ArcticBeach v1.0: A physics-based parameterization of pan-Arctic coastline erosion |
title_sort |
arcticbeach v1.0: a physics-based parameterization of pan-arctic coastline erosion |
publisher |
Humboldt-Universität zu Berlin |
publishDate |
2022 |
url |
http://edoc.hu-berlin.de/18452/26602 https://nbn-resolving.org/urn:nbn:de:kobv:11-110-18452/26602-8 https://doi.org/10.3389/feart.2022.962208 https://doi.org/10.18452/25918 |
long_lat |
ENVELOPE(15.500,15.500,77.000,77.000) |
geographic |
Arctic Svalbard Veslebogen |
geographic_facet |
Arctic Svalbard Veslebogen |
genre |
Arctic Climate change Ice permafrost Sea ice Svalbard Alaska Siberia |
genre_facet |
Arctic Climate change Ice permafrost Sea ice Svalbard Alaska Siberia |
op_relation |
http://edoc.hu-berlin.de/18452/26602 urn:nbn:de:kobv:11-110-18452/26602-8 doi:10.3389/feart.2022.962208 http://dx.doi.org/10.18452/25918 2296-6463 |
op_rights |
(CC BY 4.0) Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/ |
op_doi |
https://doi.org/10.3389/feart.2022.96220810.18452/25918 |
container_title |
Frontiers in Earth Science |
container_volume |
10 |
_version_ |
1784262692334206976 |