Assessment of the theoretical limit in instrumental detectability of northern high-latitude methane sources using δ13CCH4 atmospheric signals
International audience Recent efforts have brought together bottom-up quantification approaches (inventories and process-based models) and top-down approaches using regional observations of methane atmospheric concentrations through inverse modelling to better estimate the northern high-latitude met...
Published in: | Atmospheric Chemistry and Physics |
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Main Authors: | , , , , , , , |
Other Authors: | , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
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HAL CCSD
2019
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Subjects: | |
Online Access: | https://hal.science/hal-02973950 https://hal.science/hal-02973950/document https://hal.science/hal-02973950/file/acp-19-12141-2019.pdf https://doi.org/10.5194/acp-19-12141-2019 |
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ftceafr:oai:HAL:hal-02973950v1 |
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Open Polar |
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HAL-CEA (Commissariat à l'énergie atomique et aux énergies alternatives) |
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language |
English |
topic |
[SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere [SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces environment |
spellingShingle |
[SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere [SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces environment Thonat, Thibaud Saunois, Marielle Pison, Isabelle Berchet, Antoine Hocking, Thomas Thornton, Brett F. Crill, Patrick M. Bousquet, Philippe Assessment of the theoretical limit in instrumental detectability of northern high-latitude methane sources using δ13CCH4 atmospheric signals |
topic_facet |
[SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere [SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces environment |
description |
International audience Recent efforts have brought together bottom-up quantification approaches (inventories and process-based models) and top-down approaches using regional observations of methane atmospheric concentrations through inverse modelling to better estimate the northern high-latitude methane sources. Nevertheless, for both approaches, the relatively small number of available observations in northern high-latitude regions leaves gaps in our understanding of the drivers and distributions of the different types of regional methane sources. Observations of methane isotope ratios, performed with instruments that are becoming increasingly affordable and accurate, could bring new insights on the contributions of methane sources and sinks. Here, we present the source signal that could be observed from methane isotopic 13 CH 4 measurements if high-resolution observations were available and thus what requirements should be fulfilled in future instrument deployments in terms of accuracy in order to constrain different emission categories. This theoretical study uses the regional chemistry-transport model CHIMERE driven by different scenarios of isotopic signatures for each regional methane source mix. It is found that if the current network of methane monitoring sites were equipped with instruments measuring the isotopic signal continuously , only sites that are significantly influenced by emission sources could differentiate regional emissions with a reasonable level of confidence. For example, wetland emissions require daily accuracies lower than 0.2 ‰ for most of the sites. Detecting East Siberian Arctic Shelf (ESAS) emissions requires accuracies lower than 0.05 ‰ at coastal Rus-sian sites (even lower for other sites). Freshwater emissions would be detectable with an uncertainty lower than 0. |
author2 |
Laboratoire des Sciences du Climat et de l'Environnement Gif-sur-Yvette (LSCE) 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)-Direction de Recherche Fondamentale (CEA) (DRF (CEA)) Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA) Modélisation INVerse pour les mesures atmosphériques et SATellitaires (SATINV) Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-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)-Direction de Recherche Fondamentale (CEA) (DRF (CEA)) ICOS-RAMCES (ICOS-RAMCES) Stockholm University |
format |
Article in Journal/Newspaper |
author |
Thonat, Thibaud Saunois, Marielle Pison, Isabelle Berchet, Antoine Hocking, Thomas Thornton, Brett F. Crill, Patrick M. Bousquet, Philippe |
author_facet |
Thonat, Thibaud Saunois, Marielle Pison, Isabelle Berchet, Antoine Hocking, Thomas Thornton, Brett F. Crill, Patrick M. Bousquet, Philippe |
author_sort |
Thonat, Thibaud |
title |
Assessment of the theoretical limit in instrumental detectability of northern high-latitude methane sources using δ13CCH4 atmospheric signals |
title_short |
Assessment of the theoretical limit in instrumental detectability of northern high-latitude methane sources using δ13CCH4 atmospheric signals |
title_full |
Assessment of the theoretical limit in instrumental detectability of northern high-latitude methane sources using δ13CCH4 atmospheric signals |
title_fullStr |
Assessment of the theoretical limit in instrumental detectability of northern high-latitude methane sources using δ13CCH4 atmospheric signals |
title_full_unstemmed |
Assessment of the theoretical limit in instrumental detectability of northern high-latitude methane sources using δ13CCH4 atmospheric signals |
title_sort |
assessment of the theoretical limit in instrumental detectability of northern high-latitude methane sources using δ13cch4 atmospheric signals |
publisher |
HAL CCSD |
publishDate |
2019 |
url |
https://hal.science/hal-02973950 https://hal.science/hal-02973950/document https://hal.science/hal-02973950/file/acp-19-12141-2019.pdf https://doi.org/10.5194/acp-19-12141-2019 |
long_lat |
ENVELOPE(155.950,155.950,54.200,54.200) |
geographic |
Arctic Rus’ |
geographic_facet |
Arctic Rus’ |
genre |
Arctic |
genre_facet |
Arctic |
op_source |
ISSN: 1680-7316 EISSN: 1680-7324 Atmospheric Chemistry and Physics https://hal.science/hal-02973950 Atmospheric Chemistry and Physics, 2019, 19 (19), pp.12141-12161. ⟨10.5194/acp-19-12141-2019⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.5194/acp-19-12141-2019 hal-02973950 https://hal.science/hal-02973950 https://hal.science/hal-02973950/document https://hal.science/hal-02973950/file/acp-19-12141-2019.pdf doi:10.5194/acp-19-12141-2019 |
op_rights |
info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.5194/acp-19-12141-2019 |
container_title |
Atmospheric Chemistry and Physics |
container_volume |
19 |
container_issue |
19 |
container_start_page |
12141 |
op_container_end_page |
12161 |
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1809896723076612096 |
spelling |
ftceafr:oai:HAL:hal-02973950v1 2024-09-09T19:27:16+00:00 Assessment of the theoretical limit in instrumental detectability of northern high-latitude methane sources using δ13CCH4 atmospheric signals Thonat, Thibaud Saunois, Marielle Pison, Isabelle Berchet, Antoine Hocking, Thomas Thornton, Brett F. Crill, Patrick M. Bousquet, Philippe Laboratoire des Sciences du Climat et de l'Environnement Gif-sur-Yvette (LSCE) 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)-Direction de Recherche Fondamentale (CEA) (DRF (CEA)) Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA) Modélisation INVerse pour les mesures atmosphériques et SATellitaires (SATINV) Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-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)-Direction de Recherche Fondamentale (CEA) (DRF (CEA)) ICOS-RAMCES (ICOS-RAMCES) Stockholm University 2019 https://hal.science/hal-02973950 https://hal.science/hal-02973950/document https://hal.science/hal-02973950/file/acp-19-12141-2019.pdf https://doi.org/10.5194/acp-19-12141-2019 en eng HAL CCSD European Geosciences Union info:eu-repo/semantics/altIdentifier/doi/10.5194/acp-19-12141-2019 hal-02973950 https://hal.science/hal-02973950 https://hal.science/hal-02973950/document https://hal.science/hal-02973950/file/acp-19-12141-2019.pdf doi:10.5194/acp-19-12141-2019 info:eu-repo/semantics/OpenAccess ISSN: 1680-7316 EISSN: 1680-7324 Atmospheric Chemistry and Physics https://hal.science/hal-02973950 Atmospheric Chemistry and Physics, 2019, 19 (19), pp.12141-12161. ⟨10.5194/acp-19-12141-2019⟩ [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere [SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces environment info:eu-repo/semantics/article Journal articles 2019 ftceafr https://doi.org/10.5194/acp-19-12141-2019 2024-07-22T13:17:44Z International audience Recent efforts have brought together bottom-up quantification approaches (inventories and process-based models) and top-down approaches using regional observations of methane atmospheric concentrations through inverse modelling to better estimate the northern high-latitude methane sources. Nevertheless, for both approaches, the relatively small number of available observations in northern high-latitude regions leaves gaps in our understanding of the drivers and distributions of the different types of regional methane sources. Observations of methane isotope ratios, performed with instruments that are becoming increasingly affordable and accurate, could bring new insights on the contributions of methane sources and sinks. Here, we present the source signal that could be observed from methane isotopic 13 CH 4 measurements if high-resolution observations were available and thus what requirements should be fulfilled in future instrument deployments in terms of accuracy in order to constrain different emission categories. This theoretical study uses the regional chemistry-transport model CHIMERE driven by different scenarios of isotopic signatures for each regional methane source mix. It is found that if the current network of methane monitoring sites were equipped with instruments measuring the isotopic signal continuously , only sites that are significantly influenced by emission sources could differentiate regional emissions with a reasonable level of confidence. For example, wetland emissions require daily accuracies lower than 0.2 ‰ for most of the sites. Detecting East Siberian Arctic Shelf (ESAS) emissions requires accuracies lower than 0.05 ‰ at coastal Rus-sian sites (even lower for other sites). Freshwater emissions would be detectable with an uncertainty lower than 0. Article in Journal/Newspaper Arctic HAL-CEA (Commissariat à l'énergie atomique et aux énergies alternatives) Arctic Rus’ ENVELOPE(155.950,155.950,54.200,54.200) Atmospheric Chemistry and Physics 19 19 12141 12161 |