Carbon dioxide release from retrogressive thaw slumps in Siberia
Thawing of ice-rich permafrost soils in sloped terrain can lead to activation of retrogressive thaw slumps (RTSs) which make organic matter available for decomposition that has been frozen for centuries to millennia. Recent studies show that the area affected by RTSs increased in the last two decade...
Published in: | Environmental Research Letters |
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Online Access: | https://doi.org/10.1088/1748-9326/acfdbb https://doaj.org/article/988f9ab4fff14543b4f2d4b98fceec41 |
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ftdoajarticles:oai:doaj.org/article:988f9ab4fff14543b4f2d4b98fceec41 2023-11-12T04:13:07+01:00 Carbon dioxide release from retrogressive thaw slumps in Siberia C Beer A Runge G Grosse G Hugelius C Knoblauch 2023-01-01T00:00:00Z https://doi.org/10.1088/1748-9326/acfdbb https://doaj.org/article/988f9ab4fff14543b4f2d4b98fceec41 EN eng IOP Publishing https://doi.org/10.1088/1748-9326/acfdbb https://doaj.org/toc/1748-9326 doi:10.1088/1748-9326/acfdbb 1748-9326 https://doaj.org/article/988f9ab4fff14543b4f2d4b98fceec41 Environmental Research Letters, Vol 18, Iss 10, p 104053 (2023) permafrost organic matter respiration hillslope Environmental technology. Sanitary engineering TD1-1066 Environmental sciences GE1-350 Science Q Physics QC1-999 article 2023 ftdoajarticles https://doi.org/10.1088/1748-9326/acfdbb 2023-10-15T00:38:30Z Thawing of ice-rich permafrost soils in sloped terrain can lead to activation of retrogressive thaw slumps (RTSs) which make organic matter available for decomposition that has been frozen for centuries to millennia. Recent studies show that the area affected by RTSs increased in the last two decades across the pan-Arctic. Combining a model of soil carbon dynamics with remotely sensed spatial details of thaw slump area and a soil carbon database, we show that RTSs in Siberia turned a previous quasi-neutral ecosystem into a strong source of carbon dioxide of 367 ± 213 gC m-1 a-1. On a global scale, recent CO _2 emissions from Siberian thaw slumps of 0.42 ± 0.22 Tg carbon per year are negligible so far. However, depending on the future evolution of permafrost thaw and hence thaw slump-affected area, such hillslope processes can transition permafrost landscapes to become a major source of additional CO _2 release into the atmosphere. Article in Journal/Newspaper Arctic Ice permafrost Siberia Directory of Open Access Journals: DOAJ Articles Arctic Environmental Research Letters 18 10 104053 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
permafrost organic matter respiration hillslope Environmental technology. Sanitary engineering TD1-1066 Environmental sciences GE1-350 Science Q Physics QC1-999 |
spellingShingle |
permafrost organic matter respiration hillslope Environmental technology. Sanitary engineering TD1-1066 Environmental sciences GE1-350 Science Q Physics QC1-999 C Beer A Runge G Grosse G Hugelius C Knoblauch Carbon dioxide release from retrogressive thaw slumps in Siberia |
topic_facet |
permafrost organic matter respiration hillslope Environmental technology. Sanitary engineering TD1-1066 Environmental sciences GE1-350 Science Q Physics QC1-999 |
description |
Thawing of ice-rich permafrost soils in sloped terrain can lead to activation of retrogressive thaw slumps (RTSs) which make organic matter available for decomposition that has been frozen for centuries to millennia. Recent studies show that the area affected by RTSs increased in the last two decades across the pan-Arctic. Combining a model of soil carbon dynamics with remotely sensed spatial details of thaw slump area and a soil carbon database, we show that RTSs in Siberia turned a previous quasi-neutral ecosystem into a strong source of carbon dioxide of 367 ± 213 gC m-1 a-1. On a global scale, recent CO _2 emissions from Siberian thaw slumps of 0.42 ± 0.22 Tg carbon per year are negligible so far. However, depending on the future evolution of permafrost thaw and hence thaw slump-affected area, such hillslope processes can transition permafrost landscapes to become a major source of additional CO _2 release into the atmosphere. |
format |
Article in Journal/Newspaper |
author |
C Beer A Runge G Grosse G Hugelius C Knoblauch |
author_facet |
C Beer A Runge G Grosse G Hugelius C Knoblauch |
author_sort |
C Beer |
title |
Carbon dioxide release from retrogressive thaw slumps in Siberia |
title_short |
Carbon dioxide release from retrogressive thaw slumps in Siberia |
title_full |
Carbon dioxide release from retrogressive thaw slumps in Siberia |
title_fullStr |
Carbon dioxide release from retrogressive thaw slumps in Siberia |
title_full_unstemmed |
Carbon dioxide release from retrogressive thaw slumps in Siberia |
title_sort |
carbon dioxide release from retrogressive thaw slumps in siberia |
publisher |
IOP Publishing |
publishDate |
2023 |
url |
https://doi.org/10.1088/1748-9326/acfdbb https://doaj.org/article/988f9ab4fff14543b4f2d4b98fceec41 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic Ice permafrost Siberia |
genre_facet |
Arctic Ice permafrost Siberia |
op_source |
Environmental Research Letters, Vol 18, Iss 10, p 104053 (2023) |
op_relation |
https://doi.org/10.1088/1748-9326/acfdbb https://doaj.org/toc/1748-9326 doi:10.1088/1748-9326/acfdbb 1748-9326 https://doaj.org/article/988f9ab4fff14543b4f2d4b98fceec41 |
op_doi |
https://doi.org/10.1088/1748-9326/acfdbb |
container_title |
Environmental Research Letters |
container_volume |
18 |
container_issue |
10 |
container_start_page |
104053 |
_version_ |
1782331276566462464 |