Variability of the surface energy balance in permafrost-underlain boreal forest
Abstract. Boreal forests in permafrost regions make up around one-third of the global forest cover and are an essential component of regional and global climate patterns. Further, climatic change can trigger extensive ecosystem shifts such as the partial disappearance of near-surface permafrost or c...
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Copernicus Publications under license by EGU – European Geosciences Union GmbH
2021
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ftoslouniv:oai:www.duo.uio.no:10852/91674 2023-05-15T17:56:38+02:00 Variability of the surface energy balance in permafrost-underlain boreal forest Stuenzi, Simone Maria Boike, Julia Cable, William Herzschuh, Ulrike Kruse, Stefan Pestryakova, Luidmila A. Schneider von Deimling, T Westermann, Sebastian Zakharov, Evgenii Langer, Moritz 2021-05-05T14:14:47Z http://hdl.handle.net/10852/91674 http://urn.nb.no/URN:NBN:no-94257 https://doi.org/10.5194/bg-18-343-2021 EN eng Copernicus Publications under license by EGU – European Geosciences Union GmbH UIO/UiO/GEO103920 http://urn.nb.no/URN:NBN:no-94257 Stuenzi, Simone Maria Boike, Julia Cable, William Herzschuh, Ulrike Kruse, Stefan Pestryakova, Luidmila A. Schneider von Deimling, T Westermann, Sebastian Zakharov, Evgenii Langer, Moritz . Variability of the surface energy balance in permafrost-underlain boreal forest. Biogeosciences. 2021 http://hdl.handle.net/10852/91674 1908233 info:ofi/fmt:kev:mtx:ctx&ctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Biogeosciences&rft.volume=&rft.spage=&rft.date=2021 Biogeosciences 18 2 343 365 https://doi.org/10.5194/bg-18-343-2021 URN:NBN:no-94257 Fulltext https://www.duo.uio.no/bitstream/handle/10852/91674/1/bg-18-343-2021.pdf Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/ CC-BY 1726-4170 Journal article Tidsskriftartikkel Peer reviewed PublishedVersion 2021 ftoslouniv https://doi.org/10.5194/bg-18-343-2021 2022-03-02T23:33:49Z Abstract. Boreal forests in permafrost regions make up around one-third of the global forest cover and are an essential component of regional and global climate patterns. Further, climatic change can trigger extensive ecosystem shifts such as the partial disappearance of near-surface permafrost or changes to the vegetation structure and composition. Therefore, our aim is to understand how the interactions between the vegetation, permafrost and the atmosphere stabilize the forests and the underlying permafrost. Existing model setups are often static or are not able to capture important processes such as the vertical structure or the leaf physiological properties. There is a need for a physically based model with a robust radiative transfer scheme through the canopy. A one-dimensional land surface model (CryoGrid) is adapted for the application in vegetated areas by coupling a multilayer canopy model (CLM-ml v0; Community Land Model) and is used to reproduce the energy transfer and thermal regime at a study site (63.18946∘ N, 118.19596∘ E) in mixed boreal forest in eastern Siberia. An extensive comparison between measured and modeled energy balance variables reveals a satisfactory model performance justifying its application to investigate the thermal regime; surface energy balance; and the vertical exchange of radiation, heat and water in this complex ecosystem. We find that the forests exert a strong control on the thermal state of permafrost through changing the radiation balance and snow cover phenology. The forest cover alters the surface energy balance by inhibiting over 90 % of the solar radiation and suppressing turbulent heat fluxes. Additionally, our simulations reveal a surplus in longwave radiation trapped below the canopy, similar to a greenhouse, which leads to a magnitude in storage heat flux comparable to that simulated at the grassland site. Further, the end of season snow cover is 3 times greater at the forest site, and the onset of the snow-melting processes are delayed. Article in Journal/Newspaper permafrost Siberia Universitet i Oslo: Digitale utgivelser ved UiO (DUO) Biogeosciences 18 2 343 365 |
institution |
Open Polar |
collection |
Universitet i Oslo: Digitale utgivelser ved UiO (DUO) |
op_collection_id |
ftoslouniv |
language |
English |
description |
Abstract. Boreal forests in permafrost regions make up around one-third of the global forest cover and are an essential component of regional and global climate patterns. Further, climatic change can trigger extensive ecosystem shifts such as the partial disappearance of near-surface permafrost or changes to the vegetation structure and composition. Therefore, our aim is to understand how the interactions between the vegetation, permafrost and the atmosphere stabilize the forests and the underlying permafrost. Existing model setups are often static or are not able to capture important processes such as the vertical structure or the leaf physiological properties. There is a need for a physically based model with a robust radiative transfer scheme through the canopy. A one-dimensional land surface model (CryoGrid) is adapted for the application in vegetated areas by coupling a multilayer canopy model (CLM-ml v0; Community Land Model) and is used to reproduce the energy transfer and thermal regime at a study site (63.18946∘ N, 118.19596∘ E) in mixed boreal forest in eastern Siberia. An extensive comparison between measured and modeled energy balance variables reveals a satisfactory model performance justifying its application to investigate the thermal regime; surface energy balance; and the vertical exchange of radiation, heat and water in this complex ecosystem. We find that the forests exert a strong control on the thermal state of permafrost through changing the radiation balance and snow cover phenology. The forest cover alters the surface energy balance by inhibiting over 90 % of the solar radiation and suppressing turbulent heat fluxes. Additionally, our simulations reveal a surplus in longwave radiation trapped below the canopy, similar to a greenhouse, which leads to a magnitude in storage heat flux comparable to that simulated at the grassland site. Further, the end of season snow cover is 3 times greater at the forest site, and the onset of the snow-melting processes are delayed. |
format |
Article in Journal/Newspaper |
author |
Stuenzi, Simone Maria Boike, Julia Cable, William Herzschuh, Ulrike Kruse, Stefan Pestryakova, Luidmila A. Schneider von Deimling, T Westermann, Sebastian Zakharov, Evgenii Langer, Moritz |
spellingShingle |
Stuenzi, Simone Maria Boike, Julia Cable, William Herzschuh, Ulrike Kruse, Stefan Pestryakova, Luidmila A. Schneider von Deimling, T Westermann, Sebastian Zakharov, Evgenii Langer, Moritz Variability of the surface energy balance in permafrost-underlain boreal forest |
author_facet |
Stuenzi, Simone Maria Boike, Julia Cable, William Herzschuh, Ulrike Kruse, Stefan Pestryakova, Luidmila A. Schneider von Deimling, T Westermann, Sebastian Zakharov, Evgenii Langer, Moritz |
author_sort |
Stuenzi, Simone Maria |
title |
Variability of the surface energy balance in permafrost-underlain boreal forest |
title_short |
Variability of the surface energy balance in permafrost-underlain boreal forest |
title_full |
Variability of the surface energy balance in permafrost-underlain boreal forest |
title_fullStr |
Variability of the surface energy balance in permafrost-underlain boreal forest |
title_full_unstemmed |
Variability of the surface energy balance in permafrost-underlain boreal forest |
title_sort |
variability of the surface energy balance in permafrost-underlain boreal forest |
publisher |
Copernicus Publications under license by EGU – European Geosciences Union GmbH |
publishDate |
2021 |
url |
http://hdl.handle.net/10852/91674 http://urn.nb.no/URN:NBN:no-94257 https://doi.org/10.5194/bg-18-343-2021 |
genre |
permafrost Siberia |
genre_facet |
permafrost Siberia |
op_source |
1726-4170 |
op_relation |
UIO/UiO/GEO103920 http://urn.nb.no/URN:NBN:no-94257 Stuenzi, Simone Maria Boike, Julia Cable, William Herzschuh, Ulrike Kruse, Stefan Pestryakova, Luidmila A. Schneider von Deimling, T Westermann, Sebastian Zakharov, Evgenii Langer, Moritz . Variability of the surface energy balance in permafrost-underlain boreal forest. Biogeosciences. 2021 http://hdl.handle.net/10852/91674 1908233 info:ofi/fmt:kev:mtx:ctx&ctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Biogeosciences&rft.volume=&rft.spage=&rft.date=2021 Biogeosciences 18 2 343 365 https://doi.org/10.5194/bg-18-343-2021 URN:NBN:no-94257 Fulltext https://www.duo.uio.no/bitstream/handle/10852/91674/1/bg-18-343-2021.pdf |
op_rights |
Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/ |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.5194/bg-18-343-2021 |
container_title |
Biogeosciences |
container_volume |
18 |
container_issue |
2 |
container_start_page |
343 |
op_container_end_page |
365 |
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1766164870606094336 |