Atmospheric CO2 and CH4 fluctuations over the continent-sea interface in the Yenisei River sector of the Kara Sea
Observations of the atmospheric sources and sinks of carbon dioxide (CO2) and methane (CH4) in the pan-Arctic domain are extremely scarce, limiting our knowledge of carbon turnover in this climatically sensitive environment and the fate of the enormous carbon reservoirs conserved in the permafrost....
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fttomskstateuniv:koha:000996462 2023-05-15T14:53:01+02:00 Atmospheric CO2 and CH4 fluctuations over the continent-sea interface in the Yenisei River sector of the Kara Sea Panov, Alexey Prokushkin, Anatoly S. Semiletov, Igor P. Kübler, Karl Korets, Mikhail A. Putilin, Ilya Urban, Anastasiya Bondar, Mikhail Heimann, Martin 2022 https://doi.org/10.3390/atmos13091402 https://vital.lib.tsu.ru/vital/access/manager/Repository/koha:000996462 eng eng koha:000996462 doi:10.3390/atmos13091402 https://vital.lib.tsu.ru/vital/access/manager/Repository/koha:000996462 Atmosphere. 2022. Vol. 13, № 9. P. 1402 (1-21) климат Сибирь углекислый газ метан атмосферный воздух статьи в журналах info:eu-repo/semantics/article 2022 fttomskstateuniv https://doi.org/10.3390/atmos13091402 2023-02-28T17:36:53Z Observations of the atmospheric sources and sinks of carbon dioxide (CO2) and methane (CH4) in the pan-Arctic domain are extremely scarce, limiting our knowledge of carbon turnover in this climatically sensitive environment and the fate of the enormous carbon reservoirs conserved in the permafrost. Especially critical are the gaps in the high latitudes of Siberia, covered by the vast permafrost underlain tundra, where only several atmospheric monitoring sites are operational. This paper presents the first two years (September 2018–January 2021) of accurate continuous observations of atmospheric CO2 and CH4 dry mole fractions at the recently deployed tower-based measurement station “DIAMIS” (73.5068° N, 80.5198° E) located on the southwestern coast of the Taimyr Peninsula, Siberia, at the Gulf of the Yenisei River that opens to the Kara Sea (Arctic Ocean). In this paper, we summarized the scientific rationale of the site, examined the seasonal footprint of the station with an analysis of terrestrial vegetation and maritime sector contributing to the captured atmospheric signal, and illustrated temporal patterns of CO2 and CH4 for the daytime mixed atmospheric layer over the continent–sea interface. Along with the temporal variations reflecting a signal caused pan-Arctic and not very much influenced by the local processes, we analyzed the spatiotemporal distribution of the synoptic anomalies representing the atmospheric signatures of regional sources and sinks of CO2 and CH4 for the studied high-arctic Siberian domain of ~625 thousand km2, with nearly equal capturing the land surface (54%) and the ocean (46%) throughout the year. Both for CO2 and CH4, we have observed a sea–continent declining trend, presuming a larger depletion of trace gases in the maritime air masses compared to the continental domain. So far, over the Kara Sea, we have not detected any prominent signals of CH4 that might have indicated processes of subsea permafrost degradation and occurrence of cold seeps–still mainly observed in the eastern ... Article in Journal/Newspaper Arctic Arctic Ocean Kara Sea permafrost Taimyr Tundra Siberia Tomsk State University Research Library Arctic Arctic Ocean Kara Sea Yenisei River ENVELOPE(84.738,84.738,69.718,69.718) Atmosphere 13 9 1402 |
institution |
Open Polar |
collection |
Tomsk State University Research Library |
op_collection_id |
fttomskstateuniv |
language |
English |
topic |
климат Сибирь углекислый газ метан атмосферный воздух |
spellingShingle |
климат Сибирь углекислый газ метан атмосферный воздух Panov, Alexey Prokushkin, Anatoly S. Semiletov, Igor P. Kübler, Karl Korets, Mikhail A. Putilin, Ilya Urban, Anastasiya Bondar, Mikhail Heimann, Martin Atmospheric CO2 and CH4 fluctuations over the continent-sea interface in the Yenisei River sector of the Kara Sea |
topic_facet |
климат Сибирь углекислый газ метан атмосферный воздух |
description |
Observations of the atmospheric sources and sinks of carbon dioxide (CO2) and methane (CH4) in the pan-Arctic domain are extremely scarce, limiting our knowledge of carbon turnover in this climatically sensitive environment and the fate of the enormous carbon reservoirs conserved in the permafrost. Especially critical are the gaps in the high latitudes of Siberia, covered by the vast permafrost underlain tundra, where only several atmospheric monitoring sites are operational. This paper presents the first two years (September 2018–January 2021) of accurate continuous observations of atmospheric CO2 and CH4 dry mole fractions at the recently deployed tower-based measurement station “DIAMIS” (73.5068° N, 80.5198° E) located on the southwestern coast of the Taimyr Peninsula, Siberia, at the Gulf of the Yenisei River that opens to the Kara Sea (Arctic Ocean). In this paper, we summarized the scientific rationale of the site, examined the seasonal footprint of the station with an analysis of terrestrial vegetation and maritime sector contributing to the captured atmospheric signal, and illustrated temporal patterns of CO2 and CH4 for the daytime mixed atmospheric layer over the continent–sea interface. Along with the temporal variations reflecting a signal caused pan-Arctic and not very much influenced by the local processes, we analyzed the spatiotemporal distribution of the synoptic anomalies representing the atmospheric signatures of regional sources and sinks of CO2 and CH4 for the studied high-arctic Siberian domain of ~625 thousand km2, with nearly equal capturing the land surface (54%) and the ocean (46%) throughout the year. Both for CO2 and CH4, we have observed a sea–continent declining trend, presuming a larger depletion of trace gases in the maritime air masses compared to the continental domain. So far, over the Kara Sea, we have not detected any prominent signals of CH4 that might have indicated processes of subsea permafrost degradation and occurrence of cold seeps–still mainly observed in the eastern ... |
format |
Article in Journal/Newspaper |
author |
Panov, Alexey Prokushkin, Anatoly S. Semiletov, Igor P. Kübler, Karl Korets, Mikhail A. Putilin, Ilya Urban, Anastasiya Bondar, Mikhail Heimann, Martin |
author_facet |
Panov, Alexey Prokushkin, Anatoly S. Semiletov, Igor P. Kübler, Karl Korets, Mikhail A. Putilin, Ilya Urban, Anastasiya Bondar, Mikhail Heimann, Martin |
author_sort |
Panov, Alexey |
title |
Atmospheric CO2 and CH4 fluctuations over the continent-sea interface in the Yenisei River sector of the Kara Sea |
title_short |
Atmospheric CO2 and CH4 fluctuations over the continent-sea interface in the Yenisei River sector of the Kara Sea |
title_full |
Atmospheric CO2 and CH4 fluctuations over the continent-sea interface in the Yenisei River sector of the Kara Sea |
title_fullStr |
Atmospheric CO2 and CH4 fluctuations over the continent-sea interface in the Yenisei River sector of the Kara Sea |
title_full_unstemmed |
Atmospheric CO2 and CH4 fluctuations over the continent-sea interface in the Yenisei River sector of the Kara Sea |
title_sort |
atmospheric co2 and ch4 fluctuations over the continent-sea interface in the yenisei river sector of the kara sea |
publishDate |
2022 |
url |
https://doi.org/10.3390/atmos13091402 https://vital.lib.tsu.ru/vital/access/manager/Repository/koha:000996462 |
long_lat |
ENVELOPE(84.738,84.738,69.718,69.718) |
geographic |
Arctic Arctic Ocean Kara Sea Yenisei River |
geographic_facet |
Arctic Arctic Ocean Kara Sea Yenisei River |
genre |
Arctic Arctic Ocean Kara Sea permafrost Taimyr Tundra Siberia |
genre_facet |
Arctic Arctic Ocean Kara Sea permafrost Taimyr Tundra Siberia |
op_source |
Atmosphere. 2022. Vol. 13, № 9. P. 1402 (1-21) |
op_relation |
koha:000996462 doi:10.3390/atmos13091402 https://vital.lib.tsu.ru/vital/access/manager/Repository/koha:000996462 |
op_doi |
https://doi.org/10.3390/atmos13091402 |
container_title |
Atmosphere |
container_volume |
13 |
container_issue |
9 |
container_start_page |
1402 |
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1766324430630289408 |