Recent Warming Has Resulted in Smaller Gains in Net Carbon Uptake in Northern High Latitudes
International audience Carbon balance of terrestrial ecosystems in the northern high latitudes (NHL) is sensitive to climate change. It remains uncertain whether current regional carbon uptake capacity can be sustained under future warming. Here the atmospheric CO2 drawdown rate (CDR) between 1974 a...
Published in: | Journal of Climate |
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Main Authors: | , , , , , , , , , |
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Format: | Article in Journal/Newspaper |
Language: | English |
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HAL CCSD
2019
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Online Access: | https://hal.archives-ouvertes.fr/hal-02899764 https://hal.archives-ouvertes.fr/hal-02899764/document https://hal.archives-ouvertes.fr/hal-02899764/file/qt961981nz.pdf https://doi.org/10.1175/JCLI-D-18-0653.1 |
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Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) |
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English |
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Carbon cycle Carbon dioxide Ecological models [SDU.STU.CL]Sciences of the Universe [physics]/Earth Sciences/Climatology |
spellingShingle |
Carbon cycle Carbon dioxide Ecological models [SDU.STU.CL]Sciences of the Universe [physics]/Earth Sciences/Climatology Zhu, Peng Zhuang, Qianlai Welp, Lisa Ciais, Philippe Heimann, Martin Peng, Bin Li, Wenyu Bernacchi, Carl Roedenbeck, Christian Keenan, Trevor Recent Warming Has Resulted in Smaller Gains in Net Carbon Uptake in Northern High Latitudes |
topic_facet |
Carbon cycle Carbon dioxide Ecological models [SDU.STU.CL]Sciences of the Universe [physics]/Earth Sciences/Climatology |
description |
International audience Carbon balance of terrestrial ecosystems in the northern high latitudes (NHL) is sensitive to climate change. It remains uncertain whether current regional carbon uptake capacity can be sustained under future warming. Here the atmospheric CO2 drawdown rate (CDR) between 1974 and 2014, defined as the CO2 decrease in ppm over the number of days in spring or summer, is estimated using atmospheric CO2 observations at Barrow (now known as Utqiaġvik), Alaska. We found that the sensitivity of CDR to interannual seasonal air temperature anomalies has trended toward less carbon uptake for a given amount of warming over this period. Changes in interannual temperature sensitivity of CDR suggest that relatively warm springs now result in less of a carbon uptake enhancement. Similarly, relatively warm summers now result in greater carbon release. These results generally agree with the sensitivity of net carbon exchange (NCE) estimated by atmospheric CO2 inversion. When NCE was aggregated over North America (NA) and Eurasia (EA), separately, the temperature sensitivity of NCE in NA has changed more than in EA. To explore potential mechanisms of this signal, we also examine trends in interannual variability of other climate variables (soil temperature and precipitation), satellite-derived gross primary production (GPP), and Trends in Net Land–Atmosphere Carbon Exchanges (TRENDY) model ensemble results. Our analysis suggests that the weakened spring sensitivity of CDR may be related to the slowdown in seasonal soil thawing rate, while the summer sensitivity change may be caused by the temporally coincident decrease in temperature sensitivity of photosynthesis. This study suggests that the current NHL carbon sink may become unsustainable as temperatures warm further. We also found that current carbon cycle models do not represent the decrease in temperature sensitivity of net carbon flux. We argue that current carbon–climate models misrepresent important aspect of the carbon–climate feedback and bias the ... |
author2 |
Purdue University West Lafayette ICOS-ATC (ICOS-ATC) Laboratoire des Sciences du Climat et de l'Environnement Gif-sur-Yvette (LSCE) Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ) Max-Planck-Institut für Biogeochemie (MPI-BGC) University of Illinois at Urbana-Champaign Urbana University of Illinois System Tsinghua University Beijing (THU) Max Planck Institute for Biogeochemistry (MPI-BGC) Max-Planck-Gesellschaft Lawrence Berkeley National Laboratory Berkeley (LBNL) |
format |
Article in Journal/Newspaper |
author |
Zhu, Peng Zhuang, Qianlai Welp, Lisa Ciais, Philippe Heimann, Martin Peng, Bin Li, Wenyu Bernacchi, Carl Roedenbeck, Christian Keenan, Trevor |
author_facet |
Zhu, Peng Zhuang, Qianlai Welp, Lisa Ciais, Philippe Heimann, Martin Peng, Bin Li, Wenyu Bernacchi, Carl Roedenbeck, Christian Keenan, Trevor |
author_sort |
Zhu, Peng |
title |
Recent Warming Has Resulted in Smaller Gains in Net Carbon Uptake in Northern High Latitudes |
title_short |
Recent Warming Has Resulted in Smaller Gains in Net Carbon Uptake in Northern High Latitudes |
title_full |
Recent Warming Has Resulted in Smaller Gains in Net Carbon Uptake in Northern High Latitudes |
title_fullStr |
Recent Warming Has Resulted in Smaller Gains in Net Carbon Uptake in Northern High Latitudes |
title_full_unstemmed |
Recent Warming Has Resulted in Smaller Gains in Net Carbon Uptake in Northern High Latitudes |
title_sort |
recent warming has resulted in smaller gains in net carbon uptake in northern high latitudes |
publisher |
HAL CCSD |
publishDate |
2019 |
url |
https://hal.archives-ouvertes.fr/hal-02899764 https://hal.archives-ouvertes.fr/hal-02899764/document https://hal.archives-ouvertes.fr/hal-02899764/file/qt961981nz.pdf https://doi.org/10.1175/JCLI-D-18-0653.1 |
genre |
Barrow Alaska |
genre_facet |
Barrow Alaska |
op_source |
ISSN: 0894-8755 EISSN: 1520-0442 Journal of Climate https://hal.archives-ouvertes.fr/hal-02899764 Journal of Climate, American Meteorological Society, 2019, 32 (18), pp.5849-5863. ⟨10.1175/JCLI-D-18-0653.1⟩ |
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info:eu-repo/semantics/altIdentifier/doi/10.1175/JCLI-D-18-0653.1 hal-02899764 https://hal.archives-ouvertes.fr/hal-02899764 https://hal.archives-ouvertes.fr/hal-02899764/document https://hal.archives-ouvertes.fr/hal-02899764/file/qt961981nz.pdf doi:10.1175/JCLI-D-18-0653.1 |
op_rights |
info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.1175/JCLI-D-18-0653.1 |
container_title |
Journal of Climate |
container_volume |
32 |
container_issue |
18 |
container_start_page |
5849 |
op_container_end_page |
5863 |
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1766371794724323328 |
spelling |
ftccsdartic:oai:HAL:hal-02899764v1 2023-05-15T15:39:44+02:00 Recent Warming Has Resulted in Smaller Gains in Net Carbon Uptake in Northern High Latitudes Zhu, Peng Zhuang, Qianlai Welp, Lisa Ciais, Philippe Heimann, Martin Peng, Bin Li, Wenyu Bernacchi, Carl Roedenbeck, Christian Keenan, Trevor Purdue University West Lafayette ICOS-ATC (ICOS-ATC) Laboratoire des Sciences du Climat et de l'Environnement Gif-sur-Yvette (LSCE) Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ) Max-Planck-Institut für Biogeochemie (MPI-BGC) University of Illinois at Urbana-Champaign Urbana University of Illinois System Tsinghua University Beijing (THU) Max Planck Institute for Biogeochemistry (MPI-BGC) Max-Planck-Gesellschaft Lawrence Berkeley National Laboratory Berkeley (LBNL) 2019 https://hal.archives-ouvertes.fr/hal-02899764 https://hal.archives-ouvertes.fr/hal-02899764/document https://hal.archives-ouvertes.fr/hal-02899764/file/qt961981nz.pdf https://doi.org/10.1175/JCLI-D-18-0653.1 en eng HAL CCSD American Meteorological Society info:eu-repo/semantics/altIdentifier/doi/10.1175/JCLI-D-18-0653.1 hal-02899764 https://hal.archives-ouvertes.fr/hal-02899764 https://hal.archives-ouvertes.fr/hal-02899764/document https://hal.archives-ouvertes.fr/hal-02899764/file/qt961981nz.pdf doi:10.1175/JCLI-D-18-0653.1 info:eu-repo/semantics/OpenAccess ISSN: 0894-8755 EISSN: 1520-0442 Journal of Climate https://hal.archives-ouvertes.fr/hal-02899764 Journal of Climate, American Meteorological Society, 2019, 32 (18), pp.5849-5863. ⟨10.1175/JCLI-D-18-0653.1⟩ Carbon cycle Carbon dioxide Ecological models [SDU.STU.CL]Sciences of the Universe [physics]/Earth Sciences/Climatology info:eu-repo/semantics/article Journal articles 2019 ftccsdartic https://doi.org/10.1175/JCLI-D-18-0653.1 2022-01-09T00:20:35Z International audience Carbon balance of terrestrial ecosystems in the northern high latitudes (NHL) is sensitive to climate change. It remains uncertain whether current regional carbon uptake capacity can be sustained under future warming. Here the atmospheric CO2 drawdown rate (CDR) between 1974 and 2014, defined as the CO2 decrease in ppm over the number of days in spring or summer, is estimated using atmospheric CO2 observations at Barrow (now known as Utqiaġvik), Alaska. We found that the sensitivity of CDR to interannual seasonal air temperature anomalies has trended toward less carbon uptake for a given amount of warming over this period. Changes in interannual temperature sensitivity of CDR suggest that relatively warm springs now result in less of a carbon uptake enhancement. Similarly, relatively warm summers now result in greater carbon release. These results generally agree with the sensitivity of net carbon exchange (NCE) estimated by atmospheric CO2 inversion. When NCE was aggregated over North America (NA) and Eurasia (EA), separately, the temperature sensitivity of NCE in NA has changed more than in EA. To explore potential mechanisms of this signal, we also examine trends in interannual variability of other climate variables (soil temperature and precipitation), satellite-derived gross primary production (GPP), and Trends in Net Land–Atmosphere Carbon Exchanges (TRENDY) model ensemble results. Our analysis suggests that the weakened spring sensitivity of CDR may be related to the slowdown in seasonal soil thawing rate, while the summer sensitivity change may be caused by the temporally coincident decrease in temperature sensitivity of photosynthesis. This study suggests that the current NHL carbon sink may become unsustainable as temperatures warm further. We also found that current carbon cycle models do not represent the decrease in temperature sensitivity of net carbon flux. We argue that current carbon–climate models misrepresent important aspect of the carbon–climate feedback and bias the ... Article in Journal/Newspaper Barrow Alaska Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) Journal of Climate 32 18 5849 5863 |