The Effect of Soil on the Summertime Surface Energy Budget of a Humid Subarctic Tundra in Northern Quebec, Canada
International audience Rising temperatures in the southern Arctic region are leading to shrub expansion and permafrost degradation. The objective of this study is to analyze the surface energy budget (SEB) of a subarctic shrub tundra site that is subject to these changes, on the east coast of Hudson...
Published in: | Journal of Hydrometeorology |
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Main Authors: | , , , , , , , |
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Format: | Article in Journal/Newspaper |
Language: | English |
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HAL CCSD
2021
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Online Access: | https://insu.hal.science/insu-03636626 https://insu.hal.science/insu-03636626/document https://insu.hal.science/insu-03636626/file/1525-7541-JHM-D-20-0243.1.pdf https://doi.org/10.1175/JHM-D-20-0243.1 |
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Institut national des sciences de l'Univers: HAL-INSU |
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English |
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[SDU]Sciences of the Universe [physics] [SDU.STU.HY]Sciences of the Universe [physics]/Earth Sciences/Hydrology [SDU.STU.ME]Sciences of the Universe [physics]/Earth Sciences/Meteorology |
spellingShingle |
[SDU]Sciences of the Universe [physics] [SDU.STU.HY]Sciences of the Universe [physics]/Earth Sciences/Hydrology [SDU.STU.ME]Sciences of the Universe [physics]/Earth Sciences/Meteorology Lackner, Georg Nadeau, Daniel F. Domine, Florent Parent, Annie-Claude Leonardini, Gonzalo Boone, Aaron Anctil, François Fortin, Vincent The Effect of Soil on the Summertime Surface Energy Budget of a Humid Subarctic Tundra in Northern Quebec, Canada |
topic_facet |
[SDU]Sciences of the Universe [physics] [SDU.STU.HY]Sciences of the Universe [physics]/Earth Sciences/Hydrology [SDU.STU.ME]Sciences of the Universe [physics]/Earth Sciences/Meteorology |
description |
International audience Rising temperatures in the southern Arctic region are leading to shrub expansion and permafrost degradation. The objective of this study is to analyze the surface energy budget (SEB) of a subarctic shrub tundra site that is subject to these changes, on the east coast of Hudson Bay in eastern Canada. We focus on the turbulent heat fluxes, as they have been poorly quantified in this region. This study is based on data collected by a flux tower using the eddy covariance approach and focused on snow-free periods. Furthermore, we compare our results with those from six Fluxnet sites in the Arctic region and analyze the performance of two land surface models, SVS and ISBA, in simulating soil moisture and turbulent heat fluxes. We found that 23% of the net radiation was converted into latent heat flux at our site, 35% was used for sensible heat flux, and about 15% for ground heat flux. These results were surprising considering our site was by far the wettest site among those studied, and most of the net radiation at the other Arctic sites was consumed by the latent heat flux. We attribute this behavior to the high hydraulic conductivity of the soil (littoral and intertidal sediments), typical of what is found in the coastal regions of the eastern Canadian Arctic. Land surface models overestimated the surface water content of those soils but were able to accurately simulate the turbulent heat flux, particularly the sensible heat flux and, to a lesser extent, the latent heat flux. |
author2 |
Takuvik Joint International Laboratory ULAVAL-CNRS Université Laval Québec (ULaval)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS) Centre national de recherches météorologiques (CNRM) Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire Midi-Pyrénées (OMP) Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3) Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales Toulouse (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France-Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3) Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales Toulouse (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France-Centre National de la Recherche Scientifique (CNRS) |
format |
Article in Journal/Newspaper |
author |
Lackner, Georg Nadeau, Daniel F. Domine, Florent Parent, Annie-Claude Leonardini, Gonzalo Boone, Aaron Anctil, François Fortin, Vincent |
author_facet |
Lackner, Georg Nadeau, Daniel F. Domine, Florent Parent, Annie-Claude Leonardini, Gonzalo Boone, Aaron Anctil, François Fortin, Vincent |
author_sort |
Lackner, Georg |
title |
The Effect of Soil on the Summertime Surface Energy Budget of a Humid Subarctic Tundra in Northern Quebec, Canada |
title_short |
The Effect of Soil on the Summertime Surface Energy Budget of a Humid Subarctic Tundra in Northern Quebec, Canada |
title_full |
The Effect of Soil on the Summertime Surface Energy Budget of a Humid Subarctic Tundra in Northern Quebec, Canada |
title_fullStr |
The Effect of Soil on the Summertime Surface Energy Budget of a Humid Subarctic Tundra in Northern Quebec, Canada |
title_full_unstemmed |
The Effect of Soil on the Summertime Surface Energy Budget of a Humid Subarctic Tundra in Northern Quebec, Canada |
title_sort |
effect of soil on the summertime surface energy budget of a humid subarctic tundra in northern quebec, canada |
publisher |
HAL CCSD |
publishDate |
2021 |
url |
https://insu.hal.science/insu-03636626 https://insu.hal.science/insu-03636626/document https://insu.hal.science/insu-03636626/file/1525-7541-JHM-D-20-0243.1.pdf https://doi.org/10.1175/JHM-D-20-0243.1 |
geographic |
Arctic Canada Hudson Hudson Bay |
geographic_facet |
Arctic Canada Hudson Hudson Bay |
genre |
Arctic Hudson Bay permafrost Subarctic Tundra |
genre_facet |
Arctic Hudson Bay permafrost Subarctic Tundra |
op_source |
ISSN: 1525-755X EISSN: 1525-7541 Journal of Hydrometeorology https://insu.hal.science/insu-03636626 Journal of Hydrometeorology, 2021, 22, pp.2547-2564. ⟨10.1175/JHM-D-20-0243.1⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1175/JHM-D-20-0243.1 insu-03636626 https://insu.hal.science/insu-03636626 https://insu.hal.science/insu-03636626/document https://insu.hal.science/insu-03636626/file/1525-7541-JHM-D-20-0243.1.pdf BIBCODE: 2021JHyMe.22.2547L doi:10.1175/JHM-D-20-0243.1 |
op_rights |
info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.1175/JHM-D-20-0243.1 |
container_title |
Journal of Hydrometeorology |
container_volume |
22 |
container_issue |
10 |
container_start_page |
2547 |
op_container_end_page |
2564 |
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1785572299140759552 |
spelling |
ftinsu:oai:HAL:insu-03636626v1 2023-12-17T10:25:00+01:00 The Effect of Soil on the Summertime Surface Energy Budget of a Humid Subarctic Tundra in Northern Quebec, Canada Lackner, Georg Nadeau, Daniel F. Domine, Florent Parent, Annie-Claude Leonardini, Gonzalo Boone, Aaron Anctil, François Fortin, Vincent Takuvik Joint International Laboratory ULAVAL-CNRS Université Laval Québec (ULaval)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS) Centre national de recherches météorologiques (CNRM) Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire Midi-Pyrénées (OMP) Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3) Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales Toulouse (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France-Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3) Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales Toulouse (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France-Centre National de la Recherche Scientifique (CNRS) 2021 https://insu.hal.science/insu-03636626 https://insu.hal.science/insu-03636626/document https://insu.hal.science/insu-03636626/file/1525-7541-JHM-D-20-0243.1.pdf https://doi.org/10.1175/JHM-D-20-0243.1 en eng HAL CCSD American Meteorological Society info:eu-repo/semantics/altIdentifier/doi/10.1175/JHM-D-20-0243.1 insu-03636626 https://insu.hal.science/insu-03636626 https://insu.hal.science/insu-03636626/document https://insu.hal.science/insu-03636626/file/1525-7541-JHM-D-20-0243.1.pdf BIBCODE: 2021JHyMe.22.2547L doi:10.1175/JHM-D-20-0243.1 info:eu-repo/semantics/OpenAccess ISSN: 1525-755X EISSN: 1525-7541 Journal of Hydrometeorology https://insu.hal.science/insu-03636626 Journal of Hydrometeorology, 2021, 22, pp.2547-2564. ⟨10.1175/JHM-D-20-0243.1⟩ [SDU]Sciences of the Universe [physics] [SDU.STU.HY]Sciences of the Universe [physics]/Earth Sciences/Hydrology [SDU.STU.ME]Sciences of the Universe [physics]/Earth Sciences/Meteorology info:eu-repo/semantics/article Journal articles 2021 ftinsu https://doi.org/10.1175/JHM-D-20-0243.1 2023-11-22T17:28:26Z International audience Rising temperatures in the southern Arctic region are leading to shrub expansion and permafrost degradation. The objective of this study is to analyze the surface energy budget (SEB) of a subarctic shrub tundra site that is subject to these changes, on the east coast of Hudson Bay in eastern Canada. We focus on the turbulent heat fluxes, as they have been poorly quantified in this region. This study is based on data collected by a flux tower using the eddy covariance approach and focused on snow-free periods. Furthermore, we compare our results with those from six Fluxnet sites in the Arctic region and analyze the performance of two land surface models, SVS and ISBA, in simulating soil moisture and turbulent heat fluxes. We found that 23% of the net radiation was converted into latent heat flux at our site, 35% was used for sensible heat flux, and about 15% for ground heat flux. These results were surprising considering our site was by far the wettest site among those studied, and most of the net radiation at the other Arctic sites was consumed by the latent heat flux. We attribute this behavior to the high hydraulic conductivity of the soil (littoral and intertidal sediments), typical of what is found in the coastal regions of the eastern Canadian Arctic. Land surface models overestimated the surface water content of those soils but were able to accurately simulate the turbulent heat flux, particularly the sensible heat flux and, to a lesser extent, the latent heat flux. Article in Journal/Newspaper Arctic Hudson Bay permafrost Subarctic Tundra Institut national des sciences de l'Univers: HAL-INSU Arctic Canada Hudson Hudson Bay Journal of Hydrometeorology 22 10 2547 2564 |