Table1_Hydrologic Controls on Peat Permafrost and Carbon Processes: New Insights From Past and Future Modeling.DOCX
Soil carbon (C) in permafrost peatlands is vulnerable to decomposition with thaw under a warming climate. The amount and form of C loss likely depends on the site hydrology following permafrost thaw, but antecedent conditions during peat accumulation are also likely important. We test the role of di...
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ftfrontimediafig:oai:figshare.com:article/19931309 2023-05-15T15:16:23+02:00 Table1_Hydrologic Controls on Peat Permafrost and Carbon Processes: New Insights From Past and Future Modeling.DOCX Claire C. Treat Miriam C. Jones Jay Alder Steve Frolking 2022-05-31T05:07:39Z https://doi.org/10.3389/fenvs.2022.892925.s001 https://figshare.com/articles/dataset/Table1_Hydrologic_Controls_on_Peat_Permafrost_and_Carbon_Processes_New_Insights_From_Past_and_Future_Modeling_DOCX/19931309 unknown doi:10.3389/fenvs.2022.892925.s001 https://figshare.com/articles/dataset/Table1_Hydrologic_Controls_on_Peat_Permafrost_and_Carbon_Processes_New_Insights_From_Past_and_Future_Modeling_DOCX/19931309 CC BY 4.0 CC-BY Environmental Science Climate Science Environmental Impact Assessment Environmental Management Soil Biology Water Treatment Processes Environmental Engineering Design Environmental Engineering Modelling Environmental Technologies permafrost peatlands and wetlands tundra peat accumulation Holocene ecological modeling Dataset 2022 ftfrontimediafig https://doi.org/10.3389/fenvs.2022.892925.s001 2022-06-01T23:07:04Z Soil carbon (C) in permafrost peatlands is vulnerable to decomposition with thaw under a warming climate. The amount and form of C loss likely depends on the site hydrology following permafrost thaw, but antecedent conditions during peat accumulation are also likely important. We test the role of differing hydrologic conditions on rates of peat accumulation, permafrost formation, and response to warming at an Arctic tundra fen using a process-based model of peatland dynamics in wet and dry landscape settings that persist from peat initiation in the mid-Holocene through future simulations to 2100 CE and 2300 CE. Climate conditions for both the wet and dry landscape settings are driven by the same downscaled TraCE-21ka transient paleoclimate simulations and CCSM4 RCP8.5 climate drivers. The landscape setting controlled the rates of peat accumulation, permafrost formation and the response to climatic warming and permafrost thaw. The dry landscape scenario had high rates of initial peat accumulation (11.7 ± 3.4 mm decade −1 ) and rapid permafrost aggradation but similar total C stocks as the wet landscape scenario. The wet landscape scenario was more resilient to 21st century warming temperatures than the dry landscape scenario and showed 60% smaller C losses and 70% more new net peat C additions by 2100 CE. Differences in the modeled responses indicate the largest effect is related to the landscape setting and basin hydrology due to permafrost controls on decomposition, suggesting an important sensitivity to changing runoff patterns. These subtle hydrological effects will be difficult to capture at circumpolar scales but are important for the carbon balance of permafrost peatlands under future climate warming. Dataset Arctic permafrost Tundra Frontiers: Figshare Arctic |
institution |
Open Polar |
collection |
Frontiers: Figshare |
op_collection_id |
ftfrontimediafig |
language |
unknown |
topic |
Environmental Science Climate Science Environmental Impact Assessment Environmental Management Soil Biology Water Treatment Processes Environmental Engineering Design Environmental Engineering Modelling Environmental Technologies permafrost peatlands and wetlands tundra peat accumulation Holocene ecological modeling |
spellingShingle |
Environmental Science Climate Science Environmental Impact Assessment Environmental Management Soil Biology Water Treatment Processes Environmental Engineering Design Environmental Engineering Modelling Environmental Technologies permafrost peatlands and wetlands tundra peat accumulation Holocene ecological modeling Claire C. Treat Miriam C. Jones Jay Alder Steve Frolking Table1_Hydrologic Controls on Peat Permafrost and Carbon Processes: New Insights From Past and Future Modeling.DOCX |
topic_facet |
Environmental Science Climate Science Environmental Impact Assessment Environmental Management Soil Biology Water Treatment Processes Environmental Engineering Design Environmental Engineering Modelling Environmental Technologies permafrost peatlands and wetlands tundra peat accumulation Holocene ecological modeling |
description |
Soil carbon (C) in permafrost peatlands is vulnerable to decomposition with thaw under a warming climate. The amount and form of C loss likely depends on the site hydrology following permafrost thaw, but antecedent conditions during peat accumulation are also likely important. We test the role of differing hydrologic conditions on rates of peat accumulation, permafrost formation, and response to warming at an Arctic tundra fen using a process-based model of peatland dynamics in wet and dry landscape settings that persist from peat initiation in the mid-Holocene through future simulations to 2100 CE and 2300 CE. Climate conditions for both the wet and dry landscape settings are driven by the same downscaled TraCE-21ka transient paleoclimate simulations and CCSM4 RCP8.5 climate drivers. The landscape setting controlled the rates of peat accumulation, permafrost formation and the response to climatic warming and permafrost thaw. The dry landscape scenario had high rates of initial peat accumulation (11.7 ± 3.4 mm decade −1 ) and rapid permafrost aggradation but similar total C stocks as the wet landscape scenario. The wet landscape scenario was more resilient to 21st century warming temperatures than the dry landscape scenario and showed 60% smaller C losses and 70% more new net peat C additions by 2100 CE. Differences in the modeled responses indicate the largest effect is related to the landscape setting and basin hydrology due to permafrost controls on decomposition, suggesting an important sensitivity to changing runoff patterns. These subtle hydrological effects will be difficult to capture at circumpolar scales but are important for the carbon balance of permafrost peatlands under future climate warming. |
format |
Dataset |
author |
Claire C. Treat Miriam C. Jones Jay Alder Steve Frolking |
author_facet |
Claire C. Treat Miriam C. Jones Jay Alder Steve Frolking |
author_sort |
Claire C. Treat |
title |
Table1_Hydrologic Controls on Peat Permafrost and Carbon Processes: New Insights From Past and Future Modeling.DOCX |
title_short |
Table1_Hydrologic Controls on Peat Permafrost and Carbon Processes: New Insights From Past and Future Modeling.DOCX |
title_full |
Table1_Hydrologic Controls on Peat Permafrost and Carbon Processes: New Insights From Past and Future Modeling.DOCX |
title_fullStr |
Table1_Hydrologic Controls on Peat Permafrost and Carbon Processes: New Insights From Past and Future Modeling.DOCX |
title_full_unstemmed |
Table1_Hydrologic Controls on Peat Permafrost and Carbon Processes: New Insights From Past and Future Modeling.DOCX |
title_sort |
table1_hydrologic controls on peat permafrost and carbon processes: new insights from past and future modeling.docx |
publishDate |
2022 |
url |
https://doi.org/10.3389/fenvs.2022.892925.s001 https://figshare.com/articles/dataset/Table1_Hydrologic_Controls_on_Peat_Permafrost_and_Carbon_Processes_New_Insights_From_Past_and_Future_Modeling_DOCX/19931309 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic permafrost Tundra |
genre_facet |
Arctic permafrost Tundra |
op_relation |
doi:10.3389/fenvs.2022.892925.s001 https://figshare.com/articles/dataset/Table1_Hydrologic_Controls_on_Peat_Permafrost_and_Carbon_Processes_New_Insights_From_Past_and_Future_Modeling_DOCX/19931309 |
op_rights |
CC BY 4.0 |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.3389/fenvs.2022.892925.s001 |
_version_ |
1766346669328171008 |