High-resolution predictions of ground ice content for the Northern Hemisphere permafrost region
Ground ice content of the Arctic soils largely dictates the effects of climate change-induced permafrost degradation and top ground destabilization. The current circumarctic information on ground ice content is overly coarse for many key applications, including assessments of hazards to Arctic infra...
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ftcopernicus:oai:publications.copernicus.org:essdd102860 2023-05-15T14:55:38+02:00 High-resolution predictions of ground ice content for the Northern Hemisphere permafrost region Karjalainen, Olli Aalto, Juha Kanevskiy, Mikhail Z. Luoto, Miska Hjort, Jan 2022-09-12 application/pdf https://doi.org/10.5194/essd-2022-144 https://essd.copernicus.org/preprints/essd-2022-144/ eng eng doi:10.5194/essd-2022-144 https://essd.copernicus.org/preprints/essd-2022-144/ eISSN: 1866-3516 Text 2022 ftcopernicus https://doi.org/10.5194/essd-2022-144 2022-09-19T16:22:56Z Ground ice content of the Arctic soils largely dictates the effects of climate change-induced permafrost degradation and top ground destabilization. The current circumarctic information on ground ice content is overly coarse for many key applications, including assessments of hazards to Arctic infrastructure, while detailed data are restricted to very few regions. This study aims to address these gaps by presenting spatially comprehensive data on pore and segregated ground ice content across the Northern Hemisphere permafrost region at a 1-km resolution. First, ground ice content datasets (n=437 and 380 1-km grid cells for volumetric and gravimetric ice content, respectively) were compiled from field observations over the permafrost region. Spatial estimates of ground ice content in the near-surface permafrost north of the 30 th parallel north were then produced by relating observed ground ice content to physically relevant environmental data layers of climate, soil, topography, and vegetation properties using a statistical modelling framework. The produced data show that ground ice content varies substantially across the permafrost region. The highest ice contents are found on peat-dominated Arctic lowlands and along major river basins. Low ice contents are associated with mountainous areas and many sporadic and isolated permafrost regions. The modelling yields relatively small prediction errors (a mean absolute error of 13.6 % volumetric ice content) over evaluation data and broadly congruent spatial distributions with earlier regional-scale studies. The presented data allow the consideration of ground ice content in various geomorphological, ecological, and environmental impact assessment applications at a scale that is more relevant than previous products. The produced ground ice data are available in the supplement for this study and at Zenodo https://doi.org/10.5281/zenodo.7009875 (Karjalainen et al., 2022). Text Arctic Climate change Ice permafrost Copernicus Publications: E-Journals Arctic Karjalainen ENVELOPE(29.283,29.283,65.950,65.950) |
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Open Polar |
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Copernicus Publications: E-Journals |
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ftcopernicus |
language |
English |
description |
Ground ice content of the Arctic soils largely dictates the effects of climate change-induced permafrost degradation and top ground destabilization. The current circumarctic information on ground ice content is overly coarse for many key applications, including assessments of hazards to Arctic infrastructure, while detailed data are restricted to very few regions. This study aims to address these gaps by presenting spatially comprehensive data on pore and segregated ground ice content across the Northern Hemisphere permafrost region at a 1-km resolution. First, ground ice content datasets (n=437 and 380 1-km grid cells for volumetric and gravimetric ice content, respectively) were compiled from field observations over the permafrost region. Spatial estimates of ground ice content in the near-surface permafrost north of the 30 th parallel north were then produced by relating observed ground ice content to physically relevant environmental data layers of climate, soil, topography, and vegetation properties using a statistical modelling framework. The produced data show that ground ice content varies substantially across the permafrost region. The highest ice contents are found on peat-dominated Arctic lowlands and along major river basins. Low ice contents are associated with mountainous areas and many sporadic and isolated permafrost regions. The modelling yields relatively small prediction errors (a mean absolute error of 13.6 % volumetric ice content) over evaluation data and broadly congruent spatial distributions with earlier regional-scale studies. The presented data allow the consideration of ground ice content in various geomorphological, ecological, and environmental impact assessment applications at a scale that is more relevant than previous products. The produced ground ice data are available in the supplement for this study and at Zenodo https://doi.org/10.5281/zenodo.7009875 (Karjalainen et al., 2022). |
format |
Text |
author |
Karjalainen, Olli Aalto, Juha Kanevskiy, Mikhail Z. Luoto, Miska Hjort, Jan |
spellingShingle |
Karjalainen, Olli Aalto, Juha Kanevskiy, Mikhail Z. Luoto, Miska Hjort, Jan High-resolution predictions of ground ice content for the Northern Hemisphere permafrost region |
author_facet |
Karjalainen, Olli Aalto, Juha Kanevskiy, Mikhail Z. Luoto, Miska Hjort, Jan |
author_sort |
Karjalainen, Olli |
title |
High-resolution predictions of ground ice content for the Northern Hemisphere permafrost region |
title_short |
High-resolution predictions of ground ice content for the Northern Hemisphere permafrost region |
title_full |
High-resolution predictions of ground ice content for the Northern Hemisphere permafrost region |
title_fullStr |
High-resolution predictions of ground ice content for the Northern Hemisphere permafrost region |
title_full_unstemmed |
High-resolution predictions of ground ice content for the Northern Hemisphere permafrost region |
title_sort |
high-resolution predictions of ground ice content for the northern hemisphere permafrost region |
publishDate |
2022 |
url |
https://doi.org/10.5194/essd-2022-144 https://essd.copernicus.org/preprints/essd-2022-144/ |
long_lat |
ENVELOPE(29.283,29.283,65.950,65.950) |
geographic |
Arctic Karjalainen |
geographic_facet |
Arctic Karjalainen |
genre |
Arctic Climate change Ice permafrost |
genre_facet |
Arctic Climate change Ice permafrost |
op_source |
eISSN: 1866-3516 |
op_relation |
doi:10.5194/essd-2022-144 https://essd.copernicus.org/preprints/essd-2022-144/ |
op_doi |
https://doi.org/10.5194/essd-2022-144 |
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1766327653255610368 |