Spring melting season methane emissions in northern high latitude wetlands are governed by the length of the season and presence of permafrost Article Swipe
Sari Hyvärinen
,
Maria Tenkanen
,
Aki Tsuruta
,
Anttoni Erkkilä
,
Kimmo Rautiainen
,
Hermanni Aaltonen
,
Motoki Sasakawa
,
Tuula Aalto
·
YOU?
·
· 2025
· Open Access
·
· DOI: https://doi.org/10.5194/egusphere-2025-2794
YOU?
·
· 2025
· Open Access
·
· DOI: https://doi.org/10.5194/egusphere-2025-2794
Northern high latitude wetlands are significant sources of methane, with emissions driven by seasonal soil freezing and thawing. To better understand the seasonality of northern high latitude methane emissions, we defined the spring melting season using the remote sensing Soil Moisture and Ocean Salinity Freeze/Thaw data from 2011–2021. To estimate methane emissions in the northern high latitudes, we used the atmospheric inverse model CarbonTracker Europe-CH4. The melting season was defined for three permafrost zones and for seasonally frozen non-permafrost region using two approaches: region-based, which considered climatological conditions of permafrost regions, and grid-based, which defines the melting season at a finer 1° × 1° scale. The length and timing of the melting season varied significantly depending on the approach. The melting season generally occurred between March and June and was influenced by the air temperature, with a negative correlation between the length and the mean temperature. The longest melting season was in the non-permafrost zone and the shortest varied between the two methods. The spring melting season emissions were on average 1.83 Tg with the region-based approach and 0.45 Tg with the grid-based approach, the non-permafrost zone having the largest share of the spring emissions. The emissions were largely dependent on the season’s length. Year-to-year variation was modest, within 15 % (region-based) and 23 % (grid-based) of average emissions, and there was also no trend during the study period. Our dual-method approach allows for robust comparison with both large-scale regional studies and localized site-level research.
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Metadata
- Type
- preprint
- Language
- en
- Landing Page
- https://doi.org/10.5194/egusphere-2025-2794
- https://egusphere.copernicus.org/preprints/2025/egusphere-2025-2794/egusphere-2025-2794.pdf
- OA Status
- gold
- Related Works
- 10
- OpenAlex ID
- https://openalex.org/W4413131679
All OpenAlex metadata
Raw OpenAlex JSON
- OpenAlex ID
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https://openalex.org/W4413131679Canonical identifier for this work in OpenAlex
- DOI
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https://doi.org/10.5194/egusphere-2025-2794Digital Object Identifier
- Title
-
Spring melting season methane emissions in northern high latitude wetlands are governed by the length of the season and presence of permafrostWork title
- Type
-
preprintOpenAlex work type
- Language
-
enPrimary language
- Publication year
-
2025Year of publication
- Publication date
-
2025-08-08Full publication date if available
- Authors
-
Sari Hyvärinen, Maria Tenkanen, Aki Tsuruta, Anttoni Erkkilä, Kimmo Rautiainen, Hermanni Aaltonen, Motoki Sasakawa, Tuula AaltoList of authors in order
- Landing page
-
https://doi.org/10.5194/egusphere-2025-2794Publisher landing page
- PDF URL
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https://egusphere.copernicus.org/preprints/2025/egusphere-2025-2794/egusphere-2025-2794.pdfDirect link to full text PDF
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YesWhether a free full text is available
- OA status
-
goldOpen access status per OpenAlex
- OA URL
-
https://egusphere.copernicus.org/preprints/2025/egusphere-2025-2794/egusphere-2025-2794.pdfDirect OA link when available
- Concepts
-
Permafrost, Environmental science, Latitude, Methane, Atmospheric sciences, Wetland, Seasonality, Climatology, Growing season, Hydrology (agriculture), Geology, Ecology, Oceanography, Geotechnical engineering, Biology, GeodesyTop concepts (fields/topics) attached by OpenAlex
- Cited by
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0Total citation count in OpenAlex
- Related works (count)
-
10Other works algorithmically related by OpenAlex
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