The net GHG balance and budget of the permafrost region (2000-2020) from ecosystem flux upscaling
The northern permafrost region has been projected to shift from a net sink to a net source of carbon under global warming. However, estimates of the contemporary net greenhouse gas (GHG) balance and budgets of the permafrost region remain highly uncertain. Here we construct the first comprehensive b...
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2023
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Online Access: | http://dx.doi.org/10.22541/essoar.169447408.86275712/v1 |
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crwinnower:10.22541/essoar.169447408.86275712/v1 2024-06-02T08:12:56+00:00 The net GHG balance and budget of the permafrost region (2000-2020) from ecosystem flux upscaling Ramage, Justine Kuhn, McKenzie Virkkala, Anna-Maria Bastos, Ana Canadell, Josep G. Ciais, Philippe Poulter, Benjamin Watts, Jennifer Voigt, Carolina Marushchak, Maija E. Biasi, Christina López-Blanco, Efrèn Natali, Susan M. Olefeldt, David Potter, Stefano Rogers, Brendan M. Schuur, Edward A.G. Treat, Claire Turetsky, Merritt R. Hugelius, Gustaf 2023 http://dx.doi.org/10.22541/essoar.169447408.86275712/v1 unknown Authorea, Inc. posted-content 2023 crwinnower https://doi.org/10.22541/essoar.169447408.86275712/v1 2024-05-07T14:19:27Z The northern permafrost region has been projected to shift from a net sink to a net source of carbon under global warming. However, estimates of the contemporary net greenhouse gas (GHG) balance and budgets of the permafrost region remain highly uncertain. Here we construct the first comprehensive bottom-up budgets of CO, CH, and NO across the terrestrial permafrost region using databases of more than 1000 in-situ flux measurements and a land cover-based ecosystem flux upscaling approach for the period 2000-2020. Estimates indicate that the permafrost region emitted a mean annual flux of 0.36 (-620, 652) Tg CO-C y, 38 (21, 53) Tg CH-C y, and 0.62 (0.03, 1.2) Tg NO-N y to the atmosphere throughout the period. While the region was a net source of CH and NO, the CO budget was near neutral with large uncertainties. Terrestrial ecosystems remained a COsink, but emissions from fire disturbances and inland waters largely offset the sink in vegetated ecosystems. Including lateral fluxes, the permafrost region was a net source of C and N, releasing 136 (-517, 821) Tg C y and 3.2 (1.9, 4.8) Tg N y. Large uncertainty ranges in these estimates point to a need for further expansion of monitoring networks, continued data synthesis efforts, and better integration of field observations, remote sensing data, and ecosystem models to constrain the contemporary net GHG budgets of the permafrost region and track their future trajectory. Other/Unknown Material permafrost The Winnower |
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The Winnower |
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crwinnower |
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description |
The northern permafrost region has been projected to shift from a net sink to a net source of carbon under global warming. However, estimates of the contemporary net greenhouse gas (GHG) balance and budgets of the permafrost region remain highly uncertain. Here we construct the first comprehensive bottom-up budgets of CO, CH, and NO across the terrestrial permafrost region using databases of more than 1000 in-situ flux measurements and a land cover-based ecosystem flux upscaling approach for the period 2000-2020. Estimates indicate that the permafrost region emitted a mean annual flux of 0.36 (-620, 652) Tg CO-C y, 38 (21, 53) Tg CH-C y, and 0.62 (0.03, 1.2) Tg NO-N y to the atmosphere throughout the period. While the region was a net source of CH and NO, the CO budget was near neutral with large uncertainties. Terrestrial ecosystems remained a COsink, but emissions from fire disturbances and inland waters largely offset the sink in vegetated ecosystems. Including lateral fluxes, the permafrost region was a net source of C and N, releasing 136 (-517, 821) Tg C y and 3.2 (1.9, 4.8) Tg N y. Large uncertainty ranges in these estimates point to a need for further expansion of monitoring networks, continued data synthesis efforts, and better integration of field observations, remote sensing data, and ecosystem models to constrain the contemporary net GHG budgets of the permafrost region and track their future trajectory. |
format |
Other/Unknown Material |
author |
Ramage, Justine Kuhn, McKenzie Virkkala, Anna-Maria Bastos, Ana Canadell, Josep G. Ciais, Philippe Poulter, Benjamin Watts, Jennifer Voigt, Carolina Marushchak, Maija E. Biasi, Christina López-Blanco, Efrèn Natali, Susan M. Olefeldt, David Potter, Stefano Rogers, Brendan M. Schuur, Edward A.G. Treat, Claire Turetsky, Merritt R. Hugelius, Gustaf |
spellingShingle |
Ramage, Justine Kuhn, McKenzie Virkkala, Anna-Maria Bastos, Ana Canadell, Josep G. Ciais, Philippe Poulter, Benjamin Watts, Jennifer Voigt, Carolina Marushchak, Maija E. Biasi, Christina López-Blanco, Efrèn Natali, Susan M. Olefeldt, David Potter, Stefano Rogers, Brendan M. Schuur, Edward A.G. Treat, Claire Turetsky, Merritt R. Hugelius, Gustaf The net GHG balance and budget of the permafrost region (2000-2020) from ecosystem flux upscaling |
author_facet |
Ramage, Justine Kuhn, McKenzie Virkkala, Anna-Maria Bastos, Ana Canadell, Josep G. Ciais, Philippe Poulter, Benjamin Watts, Jennifer Voigt, Carolina Marushchak, Maija E. Biasi, Christina López-Blanco, Efrèn Natali, Susan M. Olefeldt, David Potter, Stefano Rogers, Brendan M. Schuur, Edward A.G. Treat, Claire Turetsky, Merritt R. Hugelius, Gustaf |
author_sort |
Ramage, Justine |
title |
The net GHG balance and budget of the permafrost region (2000-2020) from ecosystem flux upscaling |
title_short |
The net GHG balance and budget of the permafrost region (2000-2020) from ecosystem flux upscaling |
title_full |
The net GHG balance and budget of the permafrost region (2000-2020) from ecosystem flux upscaling |
title_fullStr |
The net GHG balance and budget of the permafrost region (2000-2020) from ecosystem flux upscaling |
title_full_unstemmed |
The net GHG balance and budget of the permafrost region (2000-2020) from ecosystem flux upscaling |
title_sort |
net ghg balance and budget of the permafrost region (2000-2020) from ecosystem flux upscaling |
publisher |
Authorea, Inc. |
publishDate |
2023 |
url |
http://dx.doi.org/10.22541/essoar.169447408.86275712/v1 |
genre |
permafrost |
genre_facet |
permafrost |
op_doi |
https://doi.org/10.22541/essoar.169447408.86275712/v1 |
_version_ |
1800759527243513856 |