Quantifying the Effects of Snowpack on Soil Thermal and Carbon Dynamics of the Arctic Terrestrial Ecosystems
Snow insulation effects modify soil and carbon dynamics in northern middle to high latitudes (45°–90°N). This study incorporates these effects by introducing a snow model into an existing soil thermal model in a biogeochemistry modeling framework, the Terrestrial Ecosystem Model. The coupled model i...
Published in: | Journal of Geophysical Research: Biogeosciences |
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Online Access: | http://www.osti.gov/servlets/purl/1537328 https://www.osti.gov/biblio/1537328 https://doi.org/10.1002/2017jg003864 |
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ftosti:oai:osti.gov:1537328 2023-07-30T04:02:00+02:00 Quantifying the Effects of Snowpack on Soil Thermal and Carbon Dynamics of the Arctic Terrestrial Ecosystems Lyu, Zhou Zhuang, Qianlai 2022-03-31 application/pdf http://www.osti.gov/servlets/purl/1537328 https://www.osti.gov/biblio/1537328 https://doi.org/10.1002/2017jg003864 unknown http://www.osti.gov/servlets/purl/1537328 https://www.osti.gov/biblio/1537328 https://doi.org/10.1002/2017jg003864 doi:10.1002/2017jg003864 54 ENVIRONMENTAL SCIENCES 2022 ftosti https://doi.org/10.1002/2017jg003864 2023-07-11T09:34:54Z Snow insulation effects modify soil and carbon dynamics in northern middle to high latitudes (45°–90°N). This study incorporates these effects by introducing a snow model into an existing soil thermal model in a biogeochemistry modeling framework, the Terrestrial Ecosystem Model. The coupled model is used to quantify snow insulation effects on carbon and soil thermal dynamics in 45°–90°N region for the historical period (2003–2010) and the future period (2017–2099) under two climate scenarios. The revised model captures the snow insulation effects and improves the estimates of soil thermal dynamics and the land freeze-thaw as well as terrestrial ecosystem carbon dynamics. Historical mean cold-season soil temperature at 5 cm depth driven with satellite-based snow data is 6.4°C warmer in comparison with the original model simulation. Frozen area in late spring is estimated to shrink mainly over eastern Siberia, in central to eastern Europe, and along southern Canada in November. During each nongrowing season in the historical period, 0.41 Pg more soil C is released due to warmer soil temperature estimated using the new model. During 2003–2010, the revised model estimates that the region accumulated 0.86 Pg less C due to weaker gross primary production, leading to a regional C loss at 0.19 PgC/year. The revised model projects that the region will lose 38–51% permafrost area by 2100 and continue to be a C source under the low-emission scenario (Representative Concentration Pathway 2.6) but to be gradually transitioning into a weak sink in the latter half of the 21st century under the high-emission scenario (Representative Concentration Pathway 8.5). Other/Unknown Material Arctic permafrost Siberia SciTec Connect (Office of Scientific and Technical Information - OSTI, U.S. Department of Energy) Arctic Canada Journal of Geophysical Research: Biogeosciences 123 4 1197 1212 |
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SciTec Connect (Office of Scientific and Technical Information - OSTI, U.S. Department of Energy) |
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ftosti |
language |
unknown |
topic |
54 ENVIRONMENTAL SCIENCES |
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54 ENVIRONMENTAL SCIENCES Lyu, Zhou Zhuang, Qianlai Quantifying the Effects of Snowpack on Soil Thermal and Carbon Dynamics of the Arctic Terrestrial Ecosystems |
topic_facet |
54 ENVIRONMENTAL SCIENCES |
description |
Snow insulation effects modify soil and carbon dynamics in northern middle to high latitudes (45°–90°N). This study incorporates these effects by introducing a snow model into an existing soil thermal model in a biogeochemistry modeling framework, the Terrestrial Ecosystem Model. The coupled model is used to quantify snow insulation effects on carbon and soil thermal dynamics in 45°–90°N region for the historical period (2003–2010) and the future period (2017–2099) under two climate scenarios. The revised model captures the snow insulation effects and improves the estimates of soil thermal dynamics and the land freeze-thaw as well as terrestrial ecosystem carbon dynamics. Historical mean cold-season soil temperature at 5 cm depth driven with satellite-based snow data is 6.4°C warmer in comparison with the original model simulation. Frozen area in late spring is estimated to shrink mainly over eastern Siberia, in central to eastern Europe, and along southern Canada in November. During each nongrowing season in the historical period, 0.41 Pg more soil C is released due to warmer soil temperature estimated using the new model. During 2003–2010, the revised model estimates that the region accumulated 0.86 Pg less C due to weaker gross primary production, leading to a regional C loss at 0.19 PgC/year. The revised model projects that the region will lose 38–51% permafrost area by 2100 and continue to be a C source under the low-emission scenario (Representative Concentration Pathway 2.6) but to be gradually transitioning into a weak sink in the latter half of the 21st century under the high-emission scenario (Representative Concentration Pathway 8.5). |
author |
Lyu, Zhou Zhuang, Qianlai |
author_facet |
Lyu, Zhou Zhuang, Qianlai |
author_sort |
Lyu, Zhou |
title |
Quantifying the Effects of Snowpack on Soil Thermal and Carbon Dynamics of the Arctic Terrestrial Ecosystems |
title_short |
Quantifying the Effects of Snowpack on Soil Thermal and Carbon Dynamics of the Arctic Terrestrial Ecosystems |
title_full |
Quantifying the Effects of Snowpack on Soil Thermal and Carbon Dynamics of the Arctic Terrestrial Ecosystems |
title_fullStr |
Quantifying the Effects of Snowpack on Soil Thermal and Carbon Dynamics of the Arctic Terrestrial Ecosystems |
title_full_unstemmed |
Quantifying the Effects of Snowpack on Soil Thermal and Carbon Dynamics of the Arctic Terrestrial Ecosystems |
title_sort |
quantifying the effects of snowpack on soil thermal and carbon dynamics of the arctic terrestrial ecosystems |
publishDate |
2022 |
url |
http://www.osti.gov/servlets/purl/1537328 https://www.osti.gov/biblio/1537328 https://doi.org/10.1002/2017jg003864 |
geographic |
Arctic Canada |
geographic_facet |
Arctic Canada |
genre |
Arctic permafrost Siberia |
genre_facet |
Arctic permafrost Siberia |
op_relation |
http://www.osti.gov/servlets/purl/1537328 https://www.osti.gov/biblio/1537328 https://doi.org/10.1002/2017jg003864 doi:10.1002/2017jg003864 |
op_doi |
https://doi.org/10.1002/2017jg003864 |
container_title |
Journal of Geophysical Research: Biogeosciences |
container_volume |
123 |
container_issue |
4 |
container_start_page |
1197 |
op_container_end_page |
1212 |
_version_ |
1772812734101979136 |