High Arctic wetting reduces permafrost carbon feedbacks to climate warming
International audience The carbon (C) balance of permafrost regions is predicted to be extremely sensitive to climatic changes(1-3). Major uncertainties exist in the rate of permafrost thaw and associated C emissions (33-508 Pg C or 0.04-1.69 degrees C by 2100; refs 2,3) and plant C uptake. In the H...
Published in: | Nature Climate Change |
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Online Access: | https://hal.inrae.fr/hal-02641366 https://doi.org/10.1038/NCLIMATE2058 |
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ftccsdartic:oai:HAL:hal-02641366v1 2023-05-15T14:49:22+02:00 High Arctic wetting reduces permafrost carbon feedbacks to climate warming Lupascu, Massimo Welker, Jeff M. Seibt, Ulrike Maseyk, Kadmiel Xu, Xiaomei Czimczik, Claudia I. Department of Earth System Science Irvine (ESS) University of California Irvine (UCI) University of California-University of California University of Alaska Southeast (UAS) Biogéochimie et écologie des milieux continentaux (Bioemco) Centre National de la Recherche Scientifique (CNRS)-AgroParisTech-Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de la Recherche Agronomique (INRA)-École normale supérieure - Paris (ENS Paris) Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL) University of California Los Angeles (UCLA) University of California US National Science Foundation ARC-0909514, ARC-0909538 European Research Council (ERC) 202835 2014 https://hal.inrae.fr/hal-02641366 https://doi.org/10.1038/NCLIMATE2058 en eng HAL CCSD Nature Publishing Group info:eu-repo/semantics/altIdentifier/doi/10.1038/NCLIMATE2058 hal-02641366 https://hal.inrae.fr/hal-02641366 doi:10.1038/NCLIMATE2058 PRODINRA: 270718 WOS: 000333666600016 ISSN: 1758-678X EISSN: 1758-6798 Nature Climate Change https://hal.inrae.fr/hal-02641366 Nature Climate Change, Nature Publishing Group, 2014, 4 (1), pp.51-55. ⟨10.1038/NCLIMATE2058⟩ http://www.nature.com/nclimate/index.html [SDV]Life Sciences [q-bio] [SDE]Environmental Sciences info:eu-repo/semantics/article Journal articles 2014 ftccsdartic https://doi.org/10.1038/NCLIMATE2058 2021-11-21T00:48:33Z International audience The carbon (C) balance of permafrost regions is predicted to be extremely sensitive to climatic changes(1-3). Major uncertainties exist in the rate of permafrost thaw and associated C emissions (33-508 Pg C or 0.04-1.69 degrees C by 2100; refs 2,3) and plant C uptake. In the High Arctic, semi-deserts retain unique soil-plant-permafrost interactions(4,5) and heterogeneous soil C pools(6) (>12 Pg C; ref. 7). Owing to its coastal proximity, marked changes are expected for High Arctic tundra(8). With declining summer sea-ice cover(9), these systems are simultaneously exposed to rising temperatures(9), increases in precipitation(10) and permafrost degradation(11). Here we show, using measurements of tundra-atmosphere C fluxes and soil C sources (C-14) at a long-term climate change experiment in northwest Greenland, that warming decreased the summer CO2 sink strength of semi-deserts by up to 55%. In contrast, warming combined with wetting increased the CO2 sink strength by an order of magnitude. Further, wetting while relocating recently assimilated plant C into the deep soil decreased old C loss compared with the warming-only treatment. Consequently, the High Arctic has the potential to remain a strong C sink even as the rest of the permafrost region transitions to a net C source as a result of future global warming. Article in Journal/Newspaper Arctic Climate change Global warming Greenland Ice permafrost Sea ice Tundra Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) Arctic Greenland Nature Climate Change 4 1 51 55 |
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Open Polar |
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Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) |
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ftccsdartic |
language |
English |
topic |
[SDV]Life Sciences [q-bio] [SDE]Environmental Sciences |
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[SDV]Life Sciences [q-bio] [SDE]Environmental Sciences Lupascu, Massimo Welker, Jeff M. Seibt, Ulrike Maseyk, Kadmiel Xu, Xiaomei Czimczik, Claudia I. High Arctic wetting reduces permafrost carbon feedbacks to climate warming |
topic_facet |
[SDV]Life Sciences [q-bio] [SDE]Environmental Sciences |
description |
International audience The carbon (C) balance of permafrost regions is predicted to be extremely sensitive to climatic changes(1-3). Major uncertainties exist in the rate of permafrost thaw and associated C emissions (33-508 Pg C or 0.04-1.69 degrees C by 2100; refs 2,3) and plant C uptake. In the High Arctic, semi-deserts retain unique soil-plant-permafrost interactions(4,5) and heterogeneous soil C pools(6) (>12 Pg C; ref. 7). Owing to its coastal proximity, marked changes are expected for High Arctic tundra(8). With declining summer sea-ice cover(9), these systems are simultaneously exposed to rising temperatures(9), increases in precipitation(10) and permafrost degradation(11). Here we show, using measurements of tundra-atmosphere C fluxes and soil C sources (C-14) at a long-term climate change experiment in northwest Greenland, that warming decreased the summer CO2 sink strength of semi-deserts by up to 55%. In contrast, warming combined with wetting increased the CO2 sink strength by an order of magnitude. Further, wetting while relocating recently assimilated plant C into the deep soil decreased old C loss compared with the warming-only treatment. Consequently, the High Arctic has the potential to remain a strong C sink even as the rest of the permafrost region transitions to a net C source as a result of future global warming. |
author2 |
Department of Earth System Science Irvine (ESS) University of California Irvine (UCI) University of California-University of California University of Alaska Southeast (UAS) Biogéochimie et écologie des milieux continentaux (Bioemco) Centre National de la Recherche Scientifique (CNRS)-AgroParisTech-Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de la Recherche Agronomique (INRA)-École normale supérieure - Paris (ENS Paris) Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL) University of California Los Angeles (UCLA) University of California US National Science Foundation ARC-0909514, ARC-0909538 European Research Council (ERC) 202835 |
format |
Article in Journal/Newspaper |
author |
Lupascu, Massimo Welker, Jeff M. Seibt, Ulrike Maseyk, Kadmiel Xu, Xiaomei Czimczik, Claudia I. |
author_facet |
Lupascu, Massimo Welker, Jeff M. Seibt, Ulrike Maseyk, Kadmiel Xu, Xiaomei Czimczik, Claudia I. |
author_sort |
Lupascu, Massimo |
title |
High Arctic wetting reduces permafrost carbon feedbacks to climate warming |
title_short |
High Arctic wetting reduces permafrost carbon feedbacks to climate warming |
title_full |
High Arctic wetting reduces permafrost carbon feedbacks to climate warming |
title_fullStr |
High Arctic wetting reduces permafrost carbon feedbacks to climate warming |
title_full_unstemmed |
High Arctic wetting reduces permafrost carbon feedbacks to climate warming |
title_sort |
high arctic wetting reduces permafrost carbon feedbacks to climate warming |
publisher |
HAL CCSD |
publishDate |
2014 |
url |
https://hal.inrae.fr/hal-02641366 https://doi.org/10.1038/NCLIMATE2058 |
geographic |
Arctic Greenland |
geographic_facet |
Arctic Greenland |
genre |
Arctic Climate change Global warming Greenland Ice permafrost Sea ice Tundra |
genre_facet |
Arctic Climate change Global warming Greenland Ice permafrost Sea ice Tundra |
op_source |
ISSN: 1758-678X EISSN: 1758-6798 Nature Climate Change https://hal.inrae.fr/hal-02641366 Nature Climate Change, Nature Publishing Group, 2014, 4 (1), pp.51-55. ⟨10.1038/NCLIMATE2058⟩ http://www.nature.com/nclimate/index.html |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1038/NCLIMATE2058 hal-02641366 https://hal.inrae.fr/hal-02641366 doi:10.1038/NCLIMATE2058 PRODINRA: 270718 WOS: 000333666600016 |
op_doi |
https://doi.org/10.1038/NCLIMATE2058 |
container_title |
Nature Climate Change |
container_volume |
4 |
container_issue |
1 |
container_start_page |
51 |
op_container_end_page |
55 |
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1766320425140224000 |