DataSheet1_A snap-shot assessment of carbon emission and export in a pristine river draining permafrost peatlands (Taz River, Western Siberia).pdf
Mobilization of dissolved organic carbon (DOC) and CO 2 from the frozen peat to surface waters in the permafrost zone of high latitude regions is expected to enhance under on-going permafrost thaw and active layer thickness deepening. Here we explored one of the most remote, pristine, unregulated an...
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ftfrontimediafig:oai:figshare.com:article/21654152 2024-09-15T17:34:56+00:00 DataSheet1_A snap-shot assessment of carbon emission and export in a pristine river draining permafrost peatlands (Taz River, Western Siberia).pdf Sergey N. Vorobyev Oleg S. Pokrovsky Mikhail Korets Liudmila S. Shirokova 2022-12-01T05:27:49Z https://doi.org/10.3389/fenvs.2022.987596.s001 https://figshare.com/articles/dataset/DataSheet1_A_snap-shot_assessment_of_carbon_emission_and_export_in_a_pristine_river_draining_permafrost_peatlands_Taz_River_Western_Siberia_pdf/21654152 unknown doi:10.3389/fenvs.2022.987596.s001 https://figshare.com/articles/dataset/DataSheet1_A_snap-shot_assessment_of_carbon_emission_and_export_in_a_pristine_river_draining_permafrost_peatlands_Taz_River_Western_Siberia_pdf/21654152 CC BY 4.0 Environmental Science Climate Science Environmental Impact Assessment Environmental Management Soil Biology Water Treatment Processes Environmental Engineering Design Environmental Engineering Modelling Environmental Technologies CO2 river export landscape Siberia CH4 (methane) flux vegetation Dataset 2022 ftfrontimediafig https://doi.org/10.3389/fenvs.2022.987596.s001 2024-08-19T06:20:00Z Mobilization of dissolved organic carbon (DOC) and CO 2 from the frozen peat to surface waters in the permafrost zone of high latitude regions is expected to enhance under on-going permafrost thaw and active layer thickness deepening. Here we explored one of the most remote, pristine, unregulated and yet environmentally important rivers in western Siberia (Taz). This subarctic river drains through forested and tundra peat bogs over a gradient of permafrost and climate and likely acts as an important conduit of CO 2 to the atmosphere and carbon and nutrient exporter to the Arctic Ocean. In a snapshot study during end of spring flood–beginning of summer baseflow (July 2019), we monitored daytime CO 2 and CH 4 concentrations and measured CO 2 emissions using floating chambers in the main stem (700 km from the upper reaches to the mouth) and 16 main tributaries and we also assessed day/night variations in the emissions. We further tested the impact of land cover parameters of the watershed and tributaries. Based on regular monitoring of the terminal (gauging) station, we quantified the C export to the Arctic Ocean during the study period. We revealed sizable CO 2 emissions from the main stem and tributaries (1.0 ± 0.4 and 1.8 ± 0.6 g C-CO 2 m −2 d −1 , respectively). The CO 2 concentrations positively correlated with dissolved organic carbon (DOC), whereas the CH 4 concentrations could be partially controlled by dissolved nutrients (N, P) and proportion of light coniferous forest at the watershed. The overall C emission from the water surfaces (4,845 km 2 ) of the Taz basin (150,000 km 2 ) during open water period (6 months, May to October) was estimated as 0.92 Tg C (>99.5% C-CO 2 , <0.5% C-CH 4 ) which is twice higher than the total dissolved C (organic and inorganic) riverine export flux during the same period. Applying a “substituting space for time” approach for northern and southern parts of the river basin, we suggest that the current riverine CO 2 emission may increase 2 to 3 fold in the next decades ... Dataset Active layer thickness Arctic Ocean permafrost Subarctic Tundra Siberia Frontiers: Figshare |
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 CO2 river export landscape Siberia CH4 (methane) flux vegetation |
spellingShingle |
Environmental Science Climate Science Environmental Impact Assessment Environmental Management Soil Biology Water Treatment Processes Environmental Engineering Design Environmental Engineering Modelling Environmental Technologies CO2 river export landscape Siberia CH4 (methane) flux vegetation Sergey N. Vorobyev Oleg S. Pokrovsky Mikhail Korets Liudmila S. Shirokova DataSheet1_A snap-shot assessment of carbon emission and export in a pristine river draining permafrost peatlands (Taz River, Western Siberia).pdf |
topic_facet |
Environmental Science Climate Science Environmental Impact Assessment Environmental Management Soil Biology Water Treatment Processes Environmental Engineering Design Environmental Engineering Modelling Environmental Technologies CO2 river export landscape Siberia CH4 (methane) flux vegetation |
description |
Mobilization of dissolved organic carbon (DOC) and CO 2 from the frozen peat to surface waters in the permafrost zone of high latitude regions is expected to enhance under on-going permafrost thaw and active layer thickness deepening. Here we explored one of the most remote, pristine, unregulated and yet environmentally important rivers in western Siberia (Taz). This subarctic river drains through forested and tundra peat bogs over a gradient of permafrost and climate and likely acts as an important conduit of CO 2 to the atmosphere and carbon and nutrient exporter to the Arctic Ocean. In a snapshot study during end of spring flood–beginning of summer baseflow (July 2019), we monitored daytime CO 2 and CH 4 concentrations and measured CO 2 emissions using floating chambers in the main stem (700 km from the upper reaches to the mouth) and 16 main tributaries and we also assessed day/night variations in the emissions. We further tested the impact of land cover parameters of the watershed and tributaries. Based on regular monitoring of the terminal (gauging) station, we quantified the C export to the Arctic Ocean during the study period. We revealed sizable CO 2 emissions from the main stem and tributaries (1.0 ± 0.4 and 1.8 ± 0.6 g C-CO 2 m −2 d −1 , respectively). The CO 2 concentrations positively correlated with dissolved organic carbon (DOC), whereas the CH 4 concentrations could be partially controlled by dissolved nutrients (N, P) and proportion of light coniferous forest at the watershed. The overall C emission from the water surfaces (4,845 km 2 ) of the Taz basin (150,000 km 2 ) during open water period (6 months, May to October) was estimated as 0.92 Tg C (>99.5% C-CO 2 , <0.5% C-CH 4 ) which is twice higher than the total dissolved C (organic and inorganic) riverine export flux during the same period. Applying a “substituting space for time” approach for northern and southern parts of the river basin, we suggest that the current riverine CO 2 emission may increase 2 to 3 fold in the next decades ... |
format |
Dataset |
author |
Sergey N. Vorobyev Oleg S. Pokrovsky Mikhail Korets Liudmila S. Shirokova |
author_facet |
Sergey N. Vorobyev Oleg S. Pokrovsky Mikhail Korets Liudmila S. Shirokova |
author_sort |
Sergey N. Vorobyev |
title |
DataSheet1_A snap-shot assessment of carbon emission and export in a pristine river draining permafrost peatlands (Taz River, Western Siberia).pdf |
title_short |
DataSheet1_A snap-shot assessment of carbon emission and export in a pristine river draining permafrost peatlands (Taz River, Western Siberia).pdf |
title_full |
DataSheet1_A snap-shot assessment of carbon emission and export in a pristine river draining permafrost peatlands (Taz River, Western Siberia).pdf |
title_fullStr |
DataSheet1_A snap-shot assessment of carbon emission and export in a pristine river draining permafrost peatlands (Taz River, Western Siberia).pdf |
title_full_unstemmed |
DataSheet1_A snap-shot assessment of carbon emission and export in a pristine river draining permafrost peatlands (Taz River, Western Siberia).pdf |
title_sort |
datasheet1_a snap-shot assessment of carbon emission and export in a pristine river draining permafrost peatlands (taz river, western siberia).pdf |
publishDate |
2022 |
url |
https://doi.org/10.3389/fenvs.2022.987596.s001 https://figshare.com/articles/dataset/DataSheet1_A_snap-shot_assessment_of_carbon_emission_and_export_in_a_pristine_river_draining_permafrost_peatlands_Taz_River_Western_Siberia_pdf/21654152 |
genre |
Active layer thickness Arctic Ocean permafrost Subarctic Tundra Siberia |
genre_facet |
Active layer thickness Arctic Ocean permafrost Subarctic Tundra Siberia |
op_relation |
doi:10.3389/fenvs.2022.987596.s001 https://figshare.com/articles/dataset/DataSheet1_A_snap-shot_assessment_of_carbon_emission_and_export_in_a_pristine_river_draining_permafrost_peatlands_Taz_River_Western_Siberia_pdf/21654152 |
op_rights |
CC BY 4.0 |
op_doi |
https://doi.org/10.3389/fenvs.2022.987596.s001 |
_version_ |
1810433699213213696 |