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....
Published in: | Atmosphere |
---|---|
Main Authors: | , , , , , , , , |
Format: | Text |
Language: | English |
Published: |
Multidisciplinary Digital Publishing Institute
2022
|
Subjects: | |
Online Access: | https://doi.org/10.3390/atmos13091402 |
id |
ftmdpi:oai:mdpi.com:/2073-4433/13/9/1402/ |
---|---|
record_format |
openpolar |
spelling |
ftmdpi:oai:mdpi.com:/2073-4433/13/9/1402/ 2023-08-20T04:03:58+02:00 Atmospheric CO2 and CH4 Fluctuations over the Continent-Sea Interface in the Yenisei River Sector of the Kara Sea Alexey Panov Anatoly Prokushkin Igor Semiletov Karl Kübler Mikhail Korets Ilya Putilin Anastasiya Urban Mikhail Bondar Martin Heimann agris 2022-08-31 application/pdf https://doi.org/10.3390/atmos13091402 EN eng Multidisciplinary Digital Publishing Institute https://dx.doi.org/10.3390/atmos13091402 https://creativecommons.org/licenses/by/4.0/ Atmosphere; Volume 13; Issue 9; Pages: 1402 climate Arctic Siberia atmospheric composition carbon dioxide methane Text 2022 ftmdpi https://doi.org/10.3390/atmos13091402 2023-08-01T06:17:34Z 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 ... Text Arctic Arctic Ocean Kara Sea permafrost Taimyr Tundra Siberia MDPI Open Access Publishing Arctic Arctic Ocean Kara Sea Yenisei River ENVELOPE(84.738,84.738,69.718,69.718) Atmosphere 13 9 1402 |
institution |
Open Polar |
collection |
MDPI Open Access Publishing |
op_collection_id |
ftmdpi |
language |
English |
topic |
climate Arctic Siberia atmospheric composition carbon dioxide methane |
spellingShingle |
climate Arctic Siberia atmospheric composition carbon dioxide methane Alexey Panov Anatoly Prokushkin Igor Semiletov Karl Kübler Mikhail Korets Ilya Putilin Anastasiya Urban Mikhail Bondar Martin Heimann Atmospheric CO2 and CH4 Fluctuations over the Continent-Sea Interface in the Yenisei River Sector of the Kara Sea |
topic_facet |
climate Arctic Siberia atmospheric composition carbon dioxide methane |
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 |
Text |
author |
Alexey Panov Anatoly Prokushkin Igor Semiletov Karl Kübler Mikhail Korets Ilya Putilin Anastasiya Urban Mikhail Bondar Martin Heimann |
author_facet |
Alexey Panov Anatoly Prokushkin Igor Semiletov Karl Kübler Mikhail Korets Ilya Putilin Anastasiya Urban Mikhail Bondar Martin Heimann |
author_sort |
Alexey Panov |
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 |
publisher |
Multidisciplinary Digital Publishing Institute |
publishDate |
2022 |
url |
https://doi.org/10.3390/atmos13091402 |
op_coverage |
agris |
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; Volume 13; Issue 9; Pages: 1402 |
op_relation |
https://dx.doi.org/10.3390/atmos13091402 |
op_rights |
https://creativecommons.org/licenses/by/4.0/ |
op_doi |
https://doi.org/10.3390/atmos13091402 |
container_title |
Atmosphere |
container_volume |
13 |
container_issue |
9 |
container_start_page |
1402 |
_version_ |
1774714414243512320 |