On the appropriate definition of soil profile configuration and initial conditions for land surface–hydrology models in cold regions
Arctic and subarctic regions are amongst the most susceptible regions on Earth to global warming and climate change. Understanding and predicting the impact of climate change in these regions require a proper process representation of the interactions between climate, carbon cycle, and hydrology in...
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ftdoajarticles:oai:doaj.org/article:2211aae1dcb94732b81cd9545cd29df9 2023-05-15T15:18:40+02:00 On the appropriate definition of soil profile configuration and initial conditions for land surface–hydrology models in cold regions G. Sapriza-Azuri P. Gamazo S. Razavi H. S. Wheater 2018-06-01T00:00:00Z https://doi.org/10.5194/hess-22-3295-2018 https://doaj.org/article/2211aae1dcb94732b81cd9545cd29df9 EN eng Copernicus Publications https://www.hydrol-earth-syst-sci.net/22/3295/2018/hess-22-3295-2018.pdf https://doaj.org/toc/1027-5606 https://doaj.org/toc/1607-7938 doi:10.5194/hess-22-3295-2018 1027-5606 1607-7938 https://doaj.org/article/2211aae1dcb94732b81cd9545cd29df9 Hydrology and Earth System Sciences, Vol 22, Pp 3295-3309 (2018) Technology T Environmental technology. Sanitary engineering TD1-1066 Geography. Anthropology. Recreation G Environmental sciences GE1-350 article 2018 ftdoajarticles https://doi.org/10.5194/hess-22-3295-2018 2022-12-31T11:33:05Z Arctic and subarctic regions are amongst the most susceptible regions on Earth to global warming and climate change. Understanding and predicting the impact of climate change in these regions require a proper process representation of the interactions between climate, carbon cycle, and hydrology in Earth system models. This study focuses on land surface models (LSMs) that represent the lower boundary condition of general circulation models (GCMs) and regional climate models (RCMs), which simulate climate change evolution at the global and regional scales, respectively. LSMs typically utilize a standard soil configuration with a depth of no more than 4 m, whereas for cold, permafrost regions, field experiments show that attention to deep soil profiles is needed to understand and close the water and energy balances, which are tightly coupled through the phase change. To address this gap, we design and run a series of model experiments with a one-dimensional LSM, called CLASS (Canadian Land Surface Scheme), as embedded in the MESH (Modélisation Environmentale Communautaire – Surface and Hydrology) modelling system, to (1) characterize the effect of soil profile depth under different climate conditions and in the presence of parameter uncertainty; (2) assess the effect of including or excluding the geothermal flux in the LSM at the bottom of the soil column; and (3) develop a methodology for temperature profile initialization in permafrost regions, where the system has an extended memory, by the use of paleo-records and bootstrapping. Our study area is in Norman Wells, Northwest Territories of Canada, where measurements of soil temperature profiles and historical reconstructed climate data are available. Our results demonstrate a dominant role for parameter uncertainty, that is often neglected in LSMs. Considering such high sensitivity to parameter values and dependency on the climate condition, we show that a minimum depth of 20 m is essential to adequately represent the temperature dynamics. We further show that ... Article in Journal/Newspaper Arctic Climate change Global warming Northwest Territories permafrost Subarctic Directory of Open Access Journals: DOAJ Articles Arctic Northwest Territories Canada Norman Wells ENVELOPE(-126.833,-126.833,65.282,65.282) Hydrology and Earth System Sciences 22 6 3295 3309 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Technology T Environmental technology. Sanitary engineering TD1-1066 Geography. Anthropology. Recreation G Environmental sciences GE1-350 |
spellingShingle |
Technology T Environmental technology. Sanitary engineering TD1-1066 Geography. Anthropology. Recreation G Environmental sciences GE1-350 G. Sapriza-Azuri P. Gamazo S. Razavi H. S. Wheater On the appropriate definition of soil profile configuration and initial conditions for land surface–hydrology models in cold regions |
topic_facet |
Technology T Environmental technology. Sanitary engineering TD1-1066 Geography. Anthropology. Recreation G Environmental sciences GE1-350 |
description |
Arctic and subarctic regions are amongst the most susceptible regions on Earth to global warming and climate change. Understanding and predicting the impact of climate change in these regions require a proper process representation of the interactions between climate, carbon cycle, and hydrology in Earth system models. This study focuses on land surface models (LSMs) that represent the lower boundary condition of general circulation models (GCMs) and regional climate models (RCMs), which simulate climate change evolution at the global and regional scales, respectively. LSMs typically utilize a standard soil configuration with a depth of no more than 4 m, whereas for cold, permafrost regions, field experiments show that attention to deep soil profiles is needed to understand and close the water and energy balances, which are tightly coupled through the phase change. To address this gap, we design and run a series of model experiments with a one-dimensional LSM, called CLASS (Canadian Land Surface Scheme), as embedded in the MESH (Modélisation Environmentale Communautaire – Surface and Hydrology) modelling system, to (1) characterize the effect of soil profile depth under different climate conditions and in the presence of parameter uncertainty; (2) assess the effect of including or excluding the geothermal flux in the LSM at the bottom of the soil column; and (3) develop a methodology for temperature profile initialization in permafrost regions, where the system has an extended memory, by the use of paleo-records and bootstrapping. Our study area is in Norman Wells, Northwest Territories of Canada, where measurements of soil temperature profiles and historical reconstructed climate data are available. Our results demonstrate a dominant role for parameter uncertainty, that is often neglected in LSMs. Considering such high sensitivity to parameter values and dependency on the climate condition, we show that a minimum depth of 20 m is essential to adequately represent the temperature dynamics. We further show that ... |
format |
Article in Journal/Newspaper |
author |
G. Sapriza-Azuri P. Gamazo S. Razavi H. S. Wheater |
author_facet |
G. Sapriza-Azuri P. Gamazo S. Razavi H. S. Wheater |
author_sort |
G. Sapriza-Azuri |
title |
On the appropriate definition of soil profile configuration and initial conditions for land surface–hydrology models in cold regions |
title_short |
On the appropriate definition of soil profile configuration and initial conditions for land surface–hydrology models in cold regions |
title_full |
On the appropriate definition of soil profile configuration and initial conditions for land surface–hydrology models in cold regions |
title_fullStr |
On the appropriate definition of soil profile configuration and initial conditions for land surface–hydrology models in cold regions |
title_full_unstemmed |
On the appropriate definition of soil profile configuration and initial conditions for land surface–hydrology models in cold regions |
title_sort |
on the appropriate definition of soil profile configuration and initial conditions for land surface–hydrology models in cold regions |
publisher |
Copernicus Publications |
publishDate |
2018 |
url |
https://doi.org/10.5194/hess-22-3295-2018 https://doaj.org/article/2211aae1dcb94732b81cd9545cd29df9 |
long_lat |
ENVELOPE(-126.833,-126.833,65.282,65.282) |
geographic |
Arctic Northwest Territories Canada Norman Wells |
geographic_facet |
Arctic Northwest Territories Canada Norman Wells |
genre |
Arctic Climate change Global warming Northwest Territories permafrost Subarctic |
genre_facet |
Arctic Climate change Global warming Northwest Territories permafrost Subarctic |
op_source |
Hydrology and Earth System Sciences, Vol 22, Pp 3295-3309 (2018) |
op_relation |
https://www.hydrol-earth-syst-sci.net/22/3295/2018/hess-22-3295-2018.pdf https://doaj.org/toc/1027-5606 https://doaj.org/toc/1607-7938 doi:10.5194/hess-22-3295-2018 1027-5606 1607-7938 https://doaj.org/article/2211aae1dcb94732b81cd9545cd29df9 |
op_doi |
https://doi.org/10.5194/hess-22-3295-2018 |
container_title |
Hydrology and Earth System Sciences |
container_volume |
22 |
container_issue |
6 |
container_start_page |
3295 |
op_container_end_page |
3309 |
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1766348861137223680 |