Using a mechanistic model to explain the rising non-linearity in storage discharge relationships as the extent of permafrost decreases in Arctic catchments
The relationship between groundwater and discharge in Arctic and sub-Arctic regions is strongly controlled by permafrost. Previous work has shown that catchments with thawing frozen soils due to the warming climate are expected to show changes in their storage-discharge relationship. In this study,...
Published in: | Journal of Hydrology |
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Language: | English |
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2022
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Online Access: | https://curis.ku.dk/portal/da/publications/using-a-mechanistic-model-to-explain-the-rising-nonlinearity-in-storage-discharge-relationships-as-the-extent-of-permafrost-decreases-in-arctic-catchments(4217098c-f0bb-4514-a597-f6e48aac6c8e).html https://doi.org/10.1016/j.jhydrol.2022.128162 https://curis.ku.dk/ws/files/362327259/1_s2.0_S0022169422007363_main.pdf |
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ftcopenhagenunip:oai:pure.atira.dk:publications/4217098c-f0bb-4514-a597-f6e48aac6c8e 2024-06-09T07:37:49+00:00 Using a mechanistic model to explain the rising non-linearity in storage discharge relationships as the extent of permafrost decreases in Arctic catchments Marion Hinzman, Alexa Sjöberg, Ylva Lyon, Steve Schaap, Peter van der Velde, Ype 2022 application/pdf https://curis.ku.dk/portal/da/publications/using-a-mechanistic-model-to-explain-the-rising-nonlinearity-in-storage-discharge-relationships-as-the-extent-of-permafrost-decreases-in-arctic-catchments(4217098c-f0bb-4514-a597-f6e48aac6c8e).html https://doi.org/10.1016/j.jhydrol.2022.128162 https://curis.ku.dk/ws/files/362327259/1_s2.0_S0022169422007363_main.pdf eng eng info:eu-repo/semantics/openAccess Marion Hinzman , A , Sjöberg , Y , Lyon , S , Schaap , P & van der Velde , Y 2022 , ' Using a mechanistic model to explain the rising non-linearity in storage discharge relationships as the extent of permafrost decreases in Arctic catchments ' , Journal of Hydrology , vol. 612 , no. Part B , 128162 . https://doi.org/10.1016/j.jhydrol.2022.128162 Arctic hydrology Permafrost Recession curve Storage-discharge Thaw article 2022 ftcopenhagenunip https://doi.org/10.1016/j.jhydrol.2022.128162 2024-05-16T11:29:25Z The relationship between groundwater and discharge in Arctic and sub-Arctic regions is strongly controlled by permafrost. Previous work has shown that catchments with thawing frozen soils due to the warming climate are expected to show changes in their storage-discharge relationship. In this study, we use a mechanistic modelling approach to demonstrate that a thawing catchment underlain with continuous permafrost undergoes a dramatic change in storage-discharge relationship. We demonstrate that the effect of permafrost thaw, conceptualized as a reduction of an impermeable layer in the subsurface, will likely only be clearly observable as a change in slope of the recession curve of catchments with hillslope gradients>5 %. For flat catchments (<1% hillslope gradient), we find no relation with permafrost extent and change in recession curve slope will likely be dominated by changes in active layer parameters, such as in shallow surface permeability (Hydraulic Conductivity, above permafrost) and shallow surface and subsurface water retention (Specific Yield of Groundwater & Specific Yield of Surface). For mildly sloped Arctic catchments (5 % hillslope gradient), change in recession curve slope is controlled both by changes in permafrost extent and the subsurface flow length and subsurface hydraulic properties for the shallow flow, with minimal impact from overland flow properties and changes in meteorological factors. For moderately sloped Arctic catchments (10 % hillslope gradient), change in recession curve slope change is dominated by changes in permafrost extent, and secondly by changes in the subsurface flow length and subsurface hydraulic properties, with no impact from meteorological factors or changes in overland flow properties. Several of the parameters found to be driving shifts in recession curve slopes in our modeling, such as changes in active layer thickness and the formation of taliks, are more likely than others to evolve with the ongoing Arctic climate change in hillslopes, helping us ... Article in Journal/Newspaper Active layer thickness Arctic Arctic Climate change permafrost University of Copenhagen: Research Arctic Journal of Hydrology 612 128162 |
institution |
Open Polar |
collection |
University of Copenhagen: Research |
op_collection_id |
ftcopenhagenunip |
language |
English |
topic |
Arctic hydrology Permafrost Recession curve Storage-discharge Thaw |
spellingShingle |
Arctic hydrology Permafrost Recession curve Storage-discharge Thaw Marion Hinzman, Alexa Sjöberg, Ylva Lyon, Steve Schaap, Peter van der Velde, Ype Using a mechanistic model to explain the rising non-linearity in storage discharge relationships as the extent of permafrost decreases in Arctic catchments |
topic_facet |
Arctic hydrology Permafrost Recession curve Storage-discharge Thaw |
description |
The relationship between groundwater and discharge in Arctic and sub-Arctic regions is strongly controlled by permafrost. Previous work has shown that catchments with thawing frozen soils due to the warming climate are expected to show changes in their storage-discharge relationship. In this study, we use a mechanistic modelling approach to demonstrate that a thawing catchment underlain with continuous permafrost undergoes a dramatic change in storage-discharge relationship. We demonstrate that the effect of permafrost thaw, conceptualized as a reduction of an impermeable layer in the subsurface, will likely only be clearly observable as a change in slope of the recession curve of catchments with hillslope gradients>5 %. For flat catchments (<1% hillslope gradient), we find no relation with permafrost extent and change in recession curve slope will likely be dominated by changes in active layer parameters, such as in shallow surface permeability (Hydraulic Conductivity, above permafrost) and shallow surface and subsurface water retention (Specific Yield of Groundwater & Specific Yield of Surface). For mildly sloped Arctic catchments (5 % hillslope gradient), change in recession curve slope is controlled both by changes in permafrost extent and the subsurface flow length and subsurface hydraulic properties for the shallow flow, with minimal impact from overland flow properties and changes in meteorological factors. For moderately sloped Arctic catchments (10 % hillslope gradient), change in recession curve slope change is dominated by changes in permafrost extent, and secondly by changes in the subsurface flow length and subsurface hydraulic properties, with no impact from meteorological factors or changes in overland flow properties. Several of the parameters found to be driving shifts in recession curve slopes in our modeling, such as changes in active layer thickness and the formation of taliks, are more likely than others to evolve with the ongoing Arctic climate change in hillslopes, helping us ... |
format |
Article in Journal/Newspaper |
author |
Marion Hinzman, Alexa Sjöberg, Ylva Lyon, Steve Schaap, Peter van der Velde, Ype |
author_facet |
Marion Hinzman, Alexa Sjöberg, Ylva Lyon, Steve Schaap, Peter van der Velde, Ype |
author_sort |
Marion Hinzman, Alexa |
title |
Using a mechanistic model to explain the rising non-linearity in storage discharge relationships as the extent of permafrost decreases in Arctic catchments |
title_short |
Using a mechanistic model to explain the rising non-linearity in storage discharge relationships as the extent of permafrost decreases in Arctic catchments |
title_full |
Using a mechanistic model to explain the rising non-linearity in storage discharge relationships as the extent of permafrost decreases in Arctic catchments |
title_fullStr |
Using a mechanistic model to explain the rising non-linearity in storage discharge relationships as the extent of permafrost decreases in Arctic catchments |
title_full_unstemmed |
Using a mechanistic model to explain the rising non-linearity in storage discharge relationships as the extent of permafrost decreases in Arctic catchments |
title_sort |
using a mechanistic model to explain the rising non-linearity in storage discharge relationships as the extent of permafrost decreases in arctic catchments |
publishDate |
2022 |
url |
https://curis.ku.dk/portal/da/publications/using-a-mechanistic-model-to-explain-the-rising-nonlinearity-in-storage-discharge-relationships-as-the-extent-of-permafrost-decreases-in-arctic-catchments(4217098c-f0bb-4514-a597-f6e48aac6c8e).html https://doi.org/10.1016/j.jhydrol.2022.128162 https://curis.ku.dk/ws/files/362327259/1_s2.0_S0022169422007363_main.pdf |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Active layer thickness Arctic Arctic Climate change permafrost |
genre_facet |
Active layer thickness Arctic Arctic Climate change permafrost |
op_source |
Marion Hinzman , A , Sjöberg , Y , Lyon , S , Schaap , P & van der Velde , Y 2022 , ' Using a mechanistic model to explain the rising non-linearity in storage discharge relationships as the extent of permafrost decreases in Arctic catchments ' , Journal of Hydrology , vol. 612 , no. Part B , 128162 . https://doi.org/10.1016/j.jhydrol.2022.128162 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1016/j.jhydrol.2022.128162 |
container_title |
Journal of Hydrology |
container_volume |
612 |
container_start_page |
128162 |
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1801375362231304192 |