Increasing the Depth of a Land Surface Model. Part II: Temperature Sensitivity to Improved Subsurface Thermodynamics and Associated Permafrost Response

The impact of various modifications of the JSBACH land surface model to represent soil temperature and cold-region hydro-thermodynamic processes in climate projections of the twenty-first century is examined. We explore the sensitivity of JSBACH to changes in the soil thermodynamics, energy balance...

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Autores: Steinert, N. J., González Rouco, Jesús Fidel, De Vrese, P., García Bustamante, Elena, Hagemann, S., Melo Aguilar, C., Jungclaus, J. H., Lorenz, S. J.
Tipo de recurso: artículo
Fecha de publicación:2021
País:España
Institución:Universidad Complutense de Madrid (UCM)
Repositorio:Docta Complutense
Idioma:inglés
OAI Identifier:oai:docta.ucm.es:20.500.14352/4957
Acceso en línea:https://hdl.handle.net/20.500.14352/4957
Access Level:acceso abierto
Palabra clave:52
Atmosphere coupling experiment
Soil-moisture memory
Climate-change
High-latitude
Thermal-conductivity
Frozen soil
Snow model
Carbon
Dynamics
Cover
Astrofísica
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spelling Increasing the Depth of a Land Surface Model. Part II: Temperature Sensitivity to Improved Subsurface Thermodynamics and Associated Permafrost ResponseSteinert, N. J.González Rouco, Jesús FidelDe Vrese, P.García Bustamante, ElenaHagemann, S.Melo Aguilar, C.Jungclaus, J. H.Lorenz, S. J.52Atmosphere coupling experimentSoil-moisture memoryClimate-changeHigh-latitudeThermal-conductivityFrozen soilSnow modelCarbonDynamicsCoverAstrofísicaThe impact of various modifications of the JSBACH land surface model to represent soil temperature and cold-region hydro-thermodynamic processes in climate projections of the twenty-first century is examined. We explore the sensitivity of JSBACH to changes in the soil thermodynamics, energy balance and storage, and the effect of including freezing and thawing processes. The changes involve 1) the net effect of an improved soil physical representation and 2) the sensitivity of our results to changed soil parameter values and their contribution to the simulation of soil temperatures and soil moisture, both aspects being presented in the frame of an increased bottom boundary depth from 9.83 to 1418.84 m. The implementation of water phase changes and supercooled water in the ground creates a coupling between the soil thermal and hydrological regimes through latent heat exchange. Momentous effects on subsurface temperature of up to +/- 3 K, together with soil drying in the high northern latitudes, can be found at regional scales when applying improved hydro-thermodynamic soil physics. The sensitivity of the model to different soil parameter datasets is relatively low but shows important implications for the root zone soil moisture content. The evolution of permafrost under preindustrial forcing conditions emerges in simulated trajectories of stable states that differ by 4-6 x 10(6) km(2) and shows large differences in the spatial extent of 10(5)-10(6) km(2) by 2100, depending on the model configuration.American Meteorological SocietyUniversidad Complutense de Madrid20212021-12-0120212021-12-01journal articlehttp://purl.org/coar/resource_type/c_6501info:eu-repo/semantics/articleapplication/pdfhttps://hdl.handle.net/20.500.14352/4957reponame:Docta Complutenseinstname:Universidad Complutense de Madrid (UCM)Inglésengopen accesshttp://purl.org/coar/access_right/c_abf2info:eu-repo/semantics/openAccessoai:docta.ucm.es:20.500.14352/49572026-06-02T12:44:21Z
dc.title.none.fl_str_mv Increasing the Depth of a Land Surface Model. Part II: Temperature Sensitivity to Improved Subsurface Thermodynamics and Associated Permafrost Response
title Increasing the Depth of a Land Surface Model. Part II: Temperature Sensitivity to Improved Subsurface Thermodynamics and Associated Permafrost Response
spellingShingle Increasing the Depth of a Land Surface Model. Part II: Temperature Sensitivity to Improved Subsurface Thermodynamics and Associated Permafrost Response
Steinert, N. J.
52
Atmosphere coupling experiment
Soil-moisture memory
Climate-change
High-latitude
Thermal-conductivity
Frozen soil
Snow model
Carbon
Dynamics
Cover
Astrofísica
title_short Increasing the Depth of a Land Surface Model. Part II: Temperature Sensitivity to Improved Subsurface Thermodynamics and Associated Permafrost Response
title_full Increasing the Depth of a Land Surface Model. Part II: Temperature Sensitivity to Improved Subsurface Thermodynamics and Associated Permafrost Response
title_fullStr Increasing the Depth of a Land Surface Model. Part II: Temperature Sensitivity to Improved Subsurface Thermodynamics and Associated Permafrost Response
title_full_unstemmed Increasing the Depth of a Land Surface Model. Part II: Temperature Sensitivity to Improved Subsurface Thermodynamics and Associated Permafrost Response
title_sort Increasing the Depth of a Land Surface Model. Part II: Temperature Sensitivity to Improved Subsurface Thermodynamics and Associated Permafrost Response
dc.creator.none.fl_str_mv Steinert, N. J.
González Rouco, Jesús Fidel
De Vrese, P.
García Bustamante, Elena
Hagemann, S.
Melo Aguilar, C.
Jungclaus, J. H.
Lorenz, S. J.
author Steinert, N. J.
author_facet Steinert, N. J.
González Rouco, Jesús Fidel
De Vrese, P.
García Bustamante, Elena
Hagemann, S.
Melo Aguilar, C.
Jungclaus, J. H.
Lorenz, S. J.
author_role author
author2 González Rouco, Jesús Fidel
De Vrese, P.
García Bustamante, Elena
Hagemann, S.
Melo Aguilar, C.
Jungclaus, J. H.
Lorenz, S. J.
author2_role author
author
author
author
author
author
author
dc.contributor.none.fl_str_mv Universidad Complutense de Madrid
dc.subject.none.fl_str_mv 52
Atmosphere coupling experiment
Soil-moisture memory
Climate-change
High-latitude
Thermal-conductivity
Frozen soil
Snow model
Carbon
Dynamics
Cover
Astrofísica
topic 52
Atmosphere coupling experiment
Soil-moisture memory
Climate-change
High-latitude
Thermal-conductivity
Frozen soil
Snow model
Carbon
Dynamics
Cover
Astrofísica
description The impact of various modifications of the JSBACH land surface model to represent soil temperature and cold-region hydro-thermodynamic processes in climate projections of the twenty-first century is examined. We explore the sensitivity of JSBACH to changes in the soil thermodynamics, energy balance and storage, and the effect of including freezing and thawing processes. The changes involve 1) the net effect of an improved soil physical representation and 2) the sensitivity of our results to changed soil parameter values and their contribution to the simulation of soil temperatures and soil moisture, both aspects being presented in the frame of an increased bottom boundary depth from 9.83 to 1418.84 m. The implementation of water phase changes and supercooled water in the ground creates a coupling between the soil thermal and hydrological regimes through latent heat exchange. Momentous effects on subsurface temperature of up to +/- 3 K, together with soil drying in the high northern latitudes, can be found at regional scales when applying improved hydro-thermodynamic soil physics. The sensitivity of the model to different soil parameter datasets is relatively low but shows important implications for the root zone soil moisture content. The evolution of permafrost under preindustrial forcing conditions emerges in simulated trajectories of stable states that differ by 4-6 x 10(6) km(2) and shows large differences in the spatial extent of 10(5)-10(6) km(2) by 2100, depending on the model configuration.
publishDate 2021
dc.date.none.fl_str_mv 2021
2021-12-01
2021
2021-12-01
dc.type.none.fl_str_mv journal article
http://purl.org/coar/resource_type/c_6501
dc.type.openaire.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv https://hdl.handle.net/20.500.14352/4957
url https://hdl.handle.net/20.500.14352/4957
dc.language.none.fl_str_mv Inglés
eng
language_invalid_str_mv Inglés
language eng
dc.rights.none.fl_str_mv open access
http://purl.org/coar/access_right/c_abf2
dc.rights.openaire.fl_str_mv info:eu-repo/semantics/openAccess
rights_invalid_str_mv open access
http://purl.org/coar/access_right/c_abf2
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv American Meteorological Society
publisher.none.fl_str_mv American Meteorological Society
dc.source.none.fl_str_mv reponame:Docta Complutense
instname:Universidad Complutense de Madrid (UCM)
instname_str Universidad Complutense de Madrid (UCM)
reponame_str Docta Complutense
collection Docta Complutense
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15,301603

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