The relationship between methane transport to the atmosphere and the decay of the Kara Sea ice cover: satellite data for 2003–2019
Satellite spectrometers operating on the outgoing long-wave IR (thermal) radiation of the Earth and placed in sunsynchronous polar orbits provide a wealth of information about Arctic methane (CH4) year-round, day and night. Their data are unique for estimating methane emissions from the warming Arct...
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ftdoajarticles:oai:doaj.org/article:db7140c1da00410e82f5dba863fe51f4 2023-05-15T14:31:47+02:00 The relationship between methane transport to the atmosphere and the decay of the Kara Sea ice cover: satellite data for 2003–2019 L. N. Yurganov 2020-08-01T00:00:00Z https://doi.org/10.31857/S2076673420030049 https://doaj.org/article/db7140c1da00410e82f5dba863fe51f4 RU rus Nauka https://ice-snow.igras.ru/jour/article/view/820 https://doaj.org/toc/2076-6734 https://doaj.org/toc/2412-3765 2076-6734 2412-3765 doi:10.31857/S2076673420030049 https://doaj.org/article/db7140c1da00410e82f5dba863fe51f4 Лëд и снег, Vol 60, Iss 3, Pp 423-430 (2020) климат арктики метан морской лед парниковые газы спутниковые данные Science Q article 2020 ftdoajarticles https://doi.org/10.31857/S2076673420030049 2023-03-19T01:40:11Z Satellite spectrometers operating on the outgoing long-wave IR (thermal) radiation of the Earth and placed in sunsynchronous polar orbits provide a wealth of information about Arctic methane (CH4) year-round, day and night. Their data are unique for estimating methane emissions from the warming Arctic, both for land and sea. The article analyzes concentrations of methane obtained by the AIRS spectrometer in conjunction with microwave satellite measurements of sea ice concentration. The data were filtered for cases of sufficiently high temperature contrast in the lower atmosphere. The focus is on the Kara Sea during autumn-early winter season between 2003 and January 2019. This sea underwent dramatic decline in the ice cover. This shelf zone is characterized by huge reserves of oil and natural gas (~90% methane), as well as presence of sub-seabed permafrost and methane hydrates. Seasonal cycle of atmospheric methane has a minimum in early summer and a maximum in early winter. During last 16 years both summer and winter concentrations were increasing, but with different rates. Positive summer trends over the Kara Sea and over Atlantic control area were close one to another. In winter the Kara Sea methane was growing faster than over Atlantic. The methane seasonal cycle amplitude tripled from 2003 to 2019. This phenomenon was considered in terms of growing methane flux from the sea. This high trend was induced by a fast decay of the sea ice in this area with ice concentrations dropped from 95 to 20%. If the current Arctic sea cover would decline further and open water area would grow then further increase of methane concentration over the ocean may be foreseen. Article in Journal/Newspaper arctic methane Arctic Ice Kara Sea permafrost Sea ice Directory of Open Access Journals: DOAJ Articles Arctic Kara Sea Ice and Snow 60 3 423 430 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
Russian |
topic |
климат арктики метан морской лед парниковые газы спутниковые данные Science Q |
spellingShingle |
климат арктики метан морской лед парниковые газы спутниковые данные Science Q L. N. Yurganov The relationship between methane transport to the atmosphere and the decay of the Kara Sea ice cover: satellite data for 2003–2019 |
topic_facet |
климат арктики метан морской лед парниковые газы спутниковые данные Science Q |
description |
Satellite spectrometers operating on the outgoing long-wave IR (thermal) radiation of the Earth and placed in sunsynchronous polar orbits provide a wealth of information about Arctic methane (CH4) year-round, day and night. Their data are unique for estimating methane emissions from the warming Arctic, both for land and sea. The article analyzes concentrations of methane obtained by the AIRS spectrometer in conjunction with microwave satellite measurements of sea ice concentration. The data were filtered for cases of sufficiently high temperature contrast in the lower atmosphere. The focus is on the Kara Sea during autumn-early winter season between 2003 and January 2019. This sea underwent dramatic decline in the ice cover. This shelf zone is characterized by huge reserves of oil and natural gas (~90% methane), as well as presence of sub-seabed permafrost and methane hydrates. Seasonal cycle of atmospheric methane has a minimum in early summer and a maximum in early winter. During last 16 years both summer and winter concentrations were increasing, but with different rates. Positive summer trends over the Kara Sea and over Atlantic control area were close one to another. In winter the Kara Sea methane was growing faster than over Atlantic. The methane seasonal cycle amplitude tripled from 2003 to 2019. This phenomenon was considered in terms of growing methane flux from the sea. This high trend was induced by a fast decay of the sea ice in this area with ice concentrations dropped from 95 to 20%. If the current Arctic sea cover would decline further and open water area would grow then further increase of methane concentration over the ocean may be foreseen. |
format |
Article in Journal/Newspaper |
author |
L. N. Yurganov |
author_facet |
L. N. Yurganov |
author_sort |
L. N. Yurganov |
title |
The relationship between methane transport to the atmosphere and the decay of the Kara Sea ice cover: satellite data for 2003–2019 |
title_short |
The relationship between methane transport to the atmosphere and the decay of the Kara Sea ice cover: satellite data for 2003–2019 |
title_full |
The relationship between methane transport to the atmosphere and the decay of the Kara Sea ice cover: satellite data for 2003–2019 |
title_fullStr |
The relationship between methane transport to the atmosphere and the decay of the Kara Sea ice cover: satellite data for 2003–2019 |
title_full_unstemmed |
The relationship between methane transport to the atmosphere and the decay of the Kara Sea ice cover: satellite data for 2003–2019 |
title_sort |
relationship between methane transport to the atmosphere and the decay of the kara sea ice cover: satellite data for 2003–2019 |
publisher |
Nauka |
publishDate |
2020 |
url |
https://doi.org/10.31857/S2076673420030049 https://doaj.org/article/db7140c1da00410e82f5dba863fe51f4 |
geographic |
Arctic Kara Sea |
geographic_facet |
Arctic Kara Sea |
genre |
arctic methane Arctic Ice Kara Sea permafrost Sea ice |
genre_facet |
arctic methane Arctic Ice Kara Sea permafrost Sea ice |
op_source |
Лëд и снег, Vol 60, Iss 3, Pp 423-430 (2020) |
op_relation |
https://ice-snow.igras.ru/jour/article/view/820 https://doaj.org/toc/2076-6734 https://doaj.org/toc/2412-3765 2076-6734 2412-3765 doi:10.31857/S2076673420030049 https://doaj.org/article/db7140c1da00410e82f5dba863fe51f4 |
op_doi |
https://doi.org/10.31857/S2076673420030049 |
container_title |
Ice and Snow |
container_volume |
60 |
container_issue |
3 |
container_start_page |
423 |
op_container_end_page |
430 |
_version_ |
1766305317387239424 |