Three-phase numerical model for subsurface hydrology in permafrost-affected regions (PFLOTRAN-ICE v1.0)
Degradation of near-surface permafrost due to changes in the climate is expected to impact the hydrological, ecological and biogeochemical responses of the Arctic tundra. From a hydrological perspective, it is important to understand the movement of the various phases of water (gas, liquid and ice)...
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Copernicus Publications
2014
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fttriple:oai:gotriple.eu:oai:doaj.org/article:e5bbcc10faa34b089fb42d3722ca5ab1 2023-05-15T15:05:38+02:00 Three-phase numerical model for subsurface hydrology in permafrost-affected regions (PFLOTRAN-ICE v1.0) S. Karra S. L. Painter P. C. Lichtner 2014-10-01 https://doi.org/10.5194/tc-8-1935-2014 http://www.the-cryosphere.net/8/1935/2014/tc-8-1935-2014.pdf https://doaj.org/article/e5bbcc10faa34b089fb42d3722ca5ab1 en eng Copernicus Publications 1994-0416 1994-0424 doi:10.5194/tc-8-1935-2014 http://www.the-cryosphere.net/8/1935/2014/tc-8-1935-2014.pdf https://doaj.org/article/e5bbcc10faa34b089fb42d3722ca5ab1 undefined The Cryosphere, Vol 8, Iss 5, Pp 1935-1950 (2014) geo envir Journal Article https://vocabularies.coar-repositories.org/resource_types/c_6501/ 2014 fttriple https://doi.org/10.5194/tc-8-1935-2014 2023-01-22T19:35:26Z Degradation of near-surface permafrost due to changes in the climate is expected to impact the hydrological, ecological and biogeochemical responses of the Arctic tundra. From a hydrological perspective, it is important to understand the movement of the various phases of water (gas, liquid and ice) during the freezing and thawing of near-surface soils. We present a new non-isothermal, single-component (water), three-phase formulation that treats air as an inactive component. This single component model works well and produces similar results to a more complete and computationally demanding two-component (air, water) formulation, and is able to reproduce results of previously published laboratory experiments. A proof-of-concept implementation in the massively parallel subsurface flow and reactive transport code PFLOTRAN is summarized, and parallel performance of that implementation is demonstrated. When water vapor diffusion is considered, a large effect on soil moisture dynamics is seen, which is due to dependence of thermal conductivity on ice content. A large three-dimensional simulation (with around 6 million degrees of freedom) of seasonal freezing and thawing is also presented. Article in Journal/Newspaper Arctic Ice permafrost The Cryosphere Tundra Unknown Arctic The Cryosphere 8 5 1935 1950 |
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English |
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geo envir |
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geo envir S. Karra S. L. Painter P. C. Lichtner Three-phase numerical model for subsurface hydrology in permafrost-affected regions (PFLOTRAN-ICE v1.0) |
topic_facet |
geo envir |
description |
Degradation of near-surface permafrost due to changes in the climate is expected to impact the hydrological, ecological and biogeochemical responses of the Arctic tundra. From a hydrological perspective, it is important to understand the movement of the various phases of water (gas, liquid and ice) during the freezing and thawing of near-surface soils. We present a new non-isothermal, single-component (water), three-phase formulation that treats air as an inactive component. This single component model works well and produces similar results to a more complete and computationally demanding two-component (air, water) formulation, and is able to reproduce results of previously published laboratory experiments. A proof-of-concept implementation in the massively parallel subsurface flow and reactive transport code PFLOTRAN is summarized, and parallel performance of that implementation is demonstrated. When water vapor diffusion is considered, a large effect on soil moisture dynamics is seen, which is due to dependence of thermal conductivity on ice content. A large three-dimensional simulation (with around 6 million degrees of freedom) of seasonal freezing and thawing is also presented. |
format |
Article in Journal/Newspaper |
author |
S. Karra S. L. Painter P. C. Lichtner |
author_facet |
S. Karra S. L. Painter P. C. Lichtner |
author_sort |
S. Karra |
title |
Three-phase numerical model for subsurface hydrology in permafrost-affected regions (PFLOTRAN-ICE v1.0) |
title_short |
Three-phase numerical model for subsurface hydrology in permafrost-affected regions (PFLOTRAN-ICE v1.0) |
title_full |
Three-phase numerical model for subsurface hydrology in permafrost-affected regions (PFLOTRAN-ICE v1.0) |
title_fullStr |
Three-phase numerical model for subsurface hydrology in permafrost-affected regions (PFLOTRAN-ICE v1.0) |
title_full_unstemmed |
Three-phase numerical model for subsurface hydrology in permafrost-affected regions (PFLOTRAN-ICE v1.0) |
title_sort |
three-phase numerical model for subsurface hydrology in permafrost-affected regions (pflotran-ice v1.0) |
publisher |
Copernicus Publications |
publishDate |
2014 |
url |
https://doi.org/10.5194/tc-8-1935-2014 http://www.the-cryosphere.net/8/1935/2014/tc-8-1935-2014.pdf https://doaj.org/article/e5bbcc10faa34b089fb42d3722ca5ab1 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic Ice permafrost The Cryosphere Tundra |
genre_facet |
Arctic Ice permafrost The Cryosphere Tundra |
op_source |
The Cryosphere, Vol 8, Iss 5, Pp 1935-1950 (2014) |
op_relation |
1994-0416 1994-0424 doi:10.5194/tc-8-1935-2014 http://www.the-cryosphere.net/8/1935/2014/tc-8-1935-2014.pdf https://doaj.org/article/e5bbcc10faa34b089fb42d3722ca5ab1 |
op_rights |
undefined |
op_doi |
https://doi.org/10.5194/tc-8-1935-2014 |
container_title |
The Cryosphere |
container_volume |
8 |
container_issue |
5 |
container_start_page |
1935 |
op_container_end_page |
1950 |
_version_ |
1766337289409003520 |