Increasing Methane Emissions and Widespread Cold-Season Release From High-Arctic Regions Detected Through Atmospheric Measurements
Rising Arctic temperatures pose a threat to the large carbon stores trapped in Arctic permafrost. To assess methane emissions in high-Arctic regions, we analyzed atmospheric data from Alaska and Siberia using two methods: (a) a wind sector approach to calculate emission changes based on concentratio...
Published in: | Journal of Geophysical Research: Atmospheres |
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Main Authors: | , , , , , , , , , , , |
Format: | Article in Journal/Newspaper |
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2024
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Online Access: | https://hdl.handle.net/1983/4cc482dd-4db0-4506-ab1c-c8d90b0bb63f https://research-information.bris.ac.uk/en/publications/4cc482dd-4db0-4506-ab1c-c8d90b0bb63f https://doi.org/10.1029/2024JD040766 |
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ftubristolcris:oai:research-information.bris.ac.uk:publications/4cc482dd-4db0-4506-ab1c-c8d90b0bb63f 2024-06-23T07:48:40+00:00 Increasing Methane Emissions and Widespread Cold-Season Release From High-Arctic Regions Detected Through Atmospheric Measurements Ward, Rebecca H Sweeney, Colm Miller, John B. Goeckede, Mathais Laurila, Tuomas Hatakka, Juha Ivakov, Viktor Sasakawa, Motoki Machida, Toshinobu Morimoto, Shinji Goto, Daisuke Ganesan, Anita L 2024-06-16 https://hdl.handle.net/1983/4cc482dd-4db0-4506-ab1c-c8d90b0bb63f https://research-information.bris.ac.uk/en/publications/4cc482dd-4db0-4506-ab1c-c8d90b0bb63f https://doi.org/10.1029/2024JD040766 eng eng https://research-information.bris.ac.uk/en/publications/4cc482dd-4db0-4506-ab1c-c8d90b0bb63f info:eu-repo/semantics/openAccess Ward , R H , Sweeney , C , Miller , J B , Goeckede , M , Laurila , T , Hatakka , J , Ivakov , V , Sasakawa , M , Machida , T , Morimoto , S , Goto , D & Ganesan , A L 2024 , ' Increasing Methane Emissions and Widespread Cold-Season Release From High-Arctic Regions Detected Through Atmospheric Measurements ' , Journal of Geophysical Research: Atmospheres , vol. 129 , no. 11 , e2024JD040766 . https://doi.org/10.1029/2024JD040766 article 2024 ftubristolcris https://doi.org/10.1029/2024JD040766 2024-06-12T00:40:40Z Rising Arctic temperatures pose a threat to the large carbon stores trapped in Arctic permafrost. To assess methane emissions in high-Arctic regions, we analyzed atmospheric data from Alaska and Siberia using two methods: (a) a wind sector approach to calculate emission changes based on concentration enhancements using wind direction, and (b) an inversion method utilizing a high-resolution atmospheric transport model. Incorporating data after 2015, we observed a significant rise in methane emissions (0.018 ± 0.005 Tg yr −2 from 2000 to 2021) from Alaska's North Slope, indicating a shift from previous analyses. We find 34%–50% of yearly emissions occurred in the late season (September–December) consistently across multiple years and regions, which is historically underestimated in models and inventories. Our findings reveal significant changes occurring in the Arctic, highlighting the crucial role of long-term atmospheric measurements in monitoring the region, especially during the cold season. Article in Journal/Newspaper Arctic Arctic north slope permafrost Alaska Siberia University of Bristol: Bristol Research Arctic Journal of Geophysical Research: Atmospheres 129 11 |
institution |
Open Polar |
collection |
University of Bristol: Bristol Research |
op_collection_id |
ftubristolcris |
language |
English |
description |
Rising Arctic temperatures pose a threat to the large carbon stores trapped in Arctic permafrost. To assess methane emissions in high-Arctic regions, we analyzed atmospheric data from Alaska and Siberia using two methods: (a) a wind sector approach to calculate emission changes based on concentration enhancements using wind direction, and (b) an inversion method utilizing a high-resolution atmospheric transport model. Incorporating data after 2015, we observed a significant rise in methane emissions (0.018 ± 0.005 Tg yr −2 from 2000 to 2021) from Alaska's North Slope, indicating a shift from previous analyses. We find 34%–50% of yearly emissions occurred in the late season (September–December) consistently across multiple years and regions, which is historically underestimated in models and inventories. Our findings reveal significant changes occurring in the Arctic, highlighting the crucial role of long-term atmospheric measurements in monitoring the region, especially during the cold season. |
format |
Article in Journal/Newspaper |
author |
Ward, Rebecca H Sweeney, Colm Miller, John B. Goeckede, Mathais Laurila, Tuomas Hatakka, Juha Ivakov, Viktor Sasakawa, Motoki Machida, Toshinobu Morimoto, Shinji Goto, Daisuke Ganesan, Anita L |
spellingShingle |
Ward, Rebecca H Sweeney, Colm Miller, John B. Goeckede, Mathais Laurila, Tuomas Hatakka, Juha Ivakov, Viktor Sasakawa, Motoki Machida, Toshinobu Morimoto, Shinji Goto, Daisuke Ganesan, Anita L Increasing Methane Emissions and Widespread Cold-Season Release From High-Arctic Regions Detected Through Atmospheric Measurements |
author_facet |
Ward, Rebecca H Sweeney, Colm Miller, John B. Goeckede, Mathais Laurila, Tuomas Hatakka, Juha Ivakov, Viktor Sasakawa, Motoki Machida, Toshinobu Morimoto, Shinji Goto, Daisuke Ganesan, Anita L |
author_sort |
Ward, Rebecca H |
title |
Increasing Methane Emissions and Widespread Cold-Season Release From High-Arctic Regions Detected Through Atmospheric Measurements |
title_short |
Increasing Methane Emissions and Widespread Cold-Season Release From High-Arctic Regions Detected Through Atmospheric Measurements |
title_full |
Increasing Methane Emissions and Widespread Cold-Season Release From High-Arctic Regions Detected Through Atmospheric Measurements |
title_fullStr |
Increasing Methane Emissions and Widespread Cold-Season Release From High-Arctic Regions Detected Through Atmospheric Measurements |
title_full_unstemmed |
Increasing Methane Emissions and Widespread Cold-Season Release From High-Arctic Regions Detected Through Atmospheric Measurements |
title_sort |
increasing methane emissions and widespread cold-season release from high-arctic regions detected through atmospheric measurements |
publishDate |
2024 |
url |
https://hdl.handle.net/1983/4cc482dd-4db0-4506-ab1c-c8d90b0bb63f https://research-information.bris.ac.uk/en/publications/4cc482dd-4db0-4506-ab1c-c8d90b0bb63f https://doi.org/10.1029/2024JD040766 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic Arctic north slope permafrost Alaska Siberia |
genre_facet |
Arctic Arctic north slope permafrost Alaska Siberia |
op_source |
Ward , R H , Sweeney , C , Miller , J B , Goeckede , M , Laurila , T , Hatakka , J , Ivakov , V , Sasakawa , M , Machida , T , Morimoto , S , Goto , D & Ganesan , A L 2024 , ' Increasing Methane Emissions and Widespread Cold-Season Release From High-Arctic Regions Detected Through Atmospheric Measurements ' , Journal of Geophysical Research: Atmospheres , vol. 129 , no. 11 , e2024JD040766 . https://doi.org/10.1029/2024JD040766 |
op_relation |
https://research-information.bris.ac.uk/en/publications/4cc482dd-4db0-4506-ab1c-c8d90b0bb63f |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1029/2024JD040766 |
container_title |
Journal of Geophysical Research: Atmospheres |
container_volume |
129 |
container_issue |
11 |
_version_ |
1802639005299245056 |