The importance of freeze–thaw cycles for lateral tracer transport in ice-wedge polygons
A significant portion of the Arctic coastal plain is classified as polygonal tundra and plays a vital role in soil carbon cycling. Recent research suggests that lateral transport of dissolved carbon could exceed vertical carbon releases to the atmosphere. However, the details of lateral subsurface f...
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Online Access: | http://www.osti.gov/servlets/purl/1880479 https://www.osti.gov/biblio/1880479 https://doi.org/10.5194/tc-16-851-2022 |
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ftosti:oai:osti.gov:1880479 2023-07-30T04:01:48+02:00 The importance of freeze–thaw cycles for lateral tracer transport in ice-wedge polygons Jafarov, Elchin E. Svyatsky, Daniil Newman, Brent David Harp, Dylan Robert Moulton, John David Wilson, Cathy Jean 2022-09-21 application/pdf http://www.osti.gov/servlets/purl/1880479 https://www.osti.gov/biblio/1880479 https://doi.org/10.5194/tc-16-851-2022 unknown http://www.osti.gov/servlets/purl/1880479 https://www.osti.gov/biblio/1880479 https://doi.org/10.5194/tc-16-851-2022 doi:10.5194/tc-16-851-2022 54 ENVIRONMENTAL SCIENCES 2022 ftosti https://doi.org/10.5194/tc-16-851-2022 2023-07-11T10:13:59Z A significant portion of the Arctic coastal plain is classified as polygonal tundra and plays a vital role in soil carbon cycling. Recent research suggests that lateral transport of dissolved carbon could exceed vertical carbon releases to the atmosphere. However, the details of lateral subsurface flow in polygonal tundra have not been well studied. We incorporated a subsurface transport process into an existing state-of-the-art hydrothermal model. The model captures the physical effects of freeze–thaw cycles on lateral flow in polygonal tundra. The new modeling capability enables non-reactive tracer movement within subsurface. We utilized this new capability to investigate the impact of freeze–thaw cycles on lateral flow in the polygonal tundra. Our study indicates the important role of freeze–thaw cycles and the freeze-up effect in lateral tracer transport, suggesting that dissolved species could be transported from the middle of the polygon to the sides within a couple of thaw seasons. Introducing lateral carbon transport into the climate models could substantially reduce the uncertainty associated with the impact of thawing permafrost. Other/Unknown Material Arctic Ice permafrost Tundra wedge* SciTec Connect (Office of Scientific and Technical Information - OSTI, U.S. Department of Energy) Arctic The Cryosphere 16 3 851 862 |
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Open Polar |
collection |
SciTec Connect (Office of Scientific and Technical Information - OSTI, U.S. Department of Energy) |
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ftosti |
language |
unknown |
topic |
54 ENVIRONMENTAL SCIENCES |
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54 ENVIRONMENTAL SCIENCES Jafarov, Elchin E. Svyatsky, Daniil Newman, Brent David Harp, Dylan Robert Moulton, John David Wilson, Cathy Jean The importance of freeze–thaw cycles for lateral tracer transport in ice-wedge polygons |
topic_facet |
54 ENVIRONMENTAL SCIENCES |
description |
A significant portion of the Arctic coastal plain is classified as polygonal tundra and plays a vital role in soil carbon cycling. Recent research suggests that lateral transport of dissolved carbon could exceed vertical carbon releases to the atmosphere. However, the details of lateral subsurface flow in polygonal tundra have not been well studied. We incorporated a subsurface transport process into an existing state-of-the-art hydrothermal model. The model captures the physical effects of freeze–thaw cycles on lateral flow in polygonal tundra. The new modeling capability enables non-reactive tracer movement within subsurface. We utilized this new capability to investigate the impact of freeze–thaw cycles on lateral flow in the polygonal tundra. Our study indicates the important role of freeze–thaw cycles and the freeze-up effect in lateral tracer transport, suggesting that dissolved species could be transported from the middle of the polygon to the sides within a couple of thaw seasons. Introducing lateral carbon transport into the climate models could substantially reduce the uncertainty associated with the impact of thawing permafrost. |
author |
Jafarov, Elchin E. Svyatsky, Daniil Newman, Brent David Harp, Dylan Robert Moulton, John David Wilson, Cathy Jean |
author_facet |
Jafarov, Elchin E. Svyatsky, Daniil Newman, Brent David Harp, Dylan Robert Moulton, John David Wilson, Cathy Jean |
author_sort |
Jafarov, Elchin E. |
title |
The importance of freeze–thaw cycles for lateral tracer transport in ice-wedge polygons |
title_short |
The importance of freeze–thaw cycles for lateral tracer transport in ice-wedge polygons |
title_full |
The importance of freeze–thaw cycles for lateral tracer transport in ice-wedge polygons |
title_fullStr |
The importance of freeze–thaw cycles for lateral tracer transport in ice-wedge polygons |
title_full_unstemmed |
The importance of freeze–thaw cycles for lateral tracer transport in ice-wedge polygons |
title_sort |
importance of freeze–thaw cycles for lateral tracer transport in ice-wedge polygons |
publishDate |
2022 |
url |
http://www.osti.gov/servlets/purl/1880479 https://www.osti.gov/biblio/1880479 https://doi.org/10.5194/tc-16-851-2022 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic Ice permafrost Tundra wedge* |
genre_facet |
Arctic Ice permafrost Tundra wedge* |
op_relation |
http://www.osti.gov/servlets/purl/1880479 https://www.osti.gov/biblio/1880479 https://doi.org/10.5194/tc-16-851-2022 doi:10.5194/tc-16-851-2022 |
op_doi |
https://doi.org/10.5194/tc-16-851-2022 |
container_title |
The Cryosphere |
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16 |
container_issue |
3 |
container_start_page |
851 |
op_container_end_page |
862 |
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1772812550091571200 |