Continentality determines warming or cooling impact of heavy rainfall events on permafrost
Permafrost thaw can cause an intensification of climate change through the release of carbon as greenhouse gases. While the effect of air temperature on permafrost thaw is well quantified, the effect of rainfall is highly variable and not well understood. Here, we provide a literature review of stud...
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Stockholms universitet, Institutionen för naturgeografi
2023
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ftstockholmuniv:oai:DiVA.org:su-220184 2023-11-12T03:59:26+01:00 Continentality determines warming or cooling impact of heavy rainfall events on permafrost Hamm, Alexandra Magnússon, Rúna Í. Khattak, Ahmad Jan Frampton, Andrew 2023 application/pdf http://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-220184 https://doi.org/10.1038/s41467-023-39325-4 eng eng Stockholms universitet, Institutionen för naturgeografi Stockholms universitet, Bolincentret för klimatforskning (tills m KTH & SMHI) Nature Communications, 2023, 14, orcid:0000-0003-2785-7672 orcid:0000-0002-4587-6706 http://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-220184 doi:10.1038/s41467-023-39325-4 PMID 37328462 ISI:001018392800019 Scopus 2-s2.0-85162040125 info:eu-repo/semantics/openAccess Climate Research Klimatforskning Article in journal info:eu-repo/semantics/article text 2023 ftstockholmuniv https://doi.org/10.1038/s41467-023-39325-4 2023-11-01T23:31:40Z Permafrost thaw can cause an intensification of climate change through the release of carbon as greenhouse gases. While the effect of air temperature on permafrost thaw is well quantified, the effect of rainfall is highly variable and not well understood. Here, we provide a literature review of studies reporting on effects of rainfall on ground temperatures in permafrost environments and use a numerical model to explore the underlying physical mechanisms under different climatic conditions. Both the evaluated body of literature and the model simulations indicate that continental climates are likely to show a warming of the subsoil and hence increased end of season active layer thickness, while maritime climates tend to respond with a slight cooling effect. This suggests that dry regions with warm summers are prone to more rapid permafrost degradation under increased occurrences of heavy rainfall events in the future, which can potentially accelerate the permafrost carbon feedback. Article in Journal/Newspaper Active layer thickness permafrost Stockholm University: Publications (DiVA) Nature Communications 14 1 |
institution |
Open Polar |
collection |
Stockholm University: Publications (DiVA) |
op_collection_id |
ftstockholmuniv |
language |
English |
topic |
Climate Research Klimatforskning |
spellingShingle |
Climate Research Klimatforskning Hamm, Alexandra Magnússon, Rúna Í. Khattak, Ahmad Jan Frampton, Andrew Continentality determines warming or cooling impact of heavy rainfall events on permafrost |
topic_facet |
Climate Research Klimatforskning |
description |
Permafrost thaw can cause an intensification of climate change through the release of carbon as greenhouse gases. While the effect of air temperature on permafrost thaw is well quantified, the effect of rainfall is highly variable and not well understood. Here, we provide a literature review of studies reporting on effects of rainfall on ground temperatures in permafrost environments and use a numerical model to explore the underlying physical mechanisms under different climatic conditions. Both the evaluated body of literature and the model simulations indicate that continental climates are likely to show a warming of the subsoil and hence increased end of season active layer thickness, while maritime climates tend to respond with a slight cooling effect. This suggests that dry regions with warm summers are prone to more rapid permafrost degradation under increased occurrences of heavy rainfall events in the future, which can potentially accelerate the permafrost carbon feedback. |
format |
Article in Journal/Newspaper |
author |
Hamm, Alexandra Magnússon, Rúna Í. Khattak, Ahmad Jan Frampton, Andrew |
author_facet |
Hamm, Alexandra Magnússon, Rúna Í. Khattak, Ahmad Jan Frampton, Andrew |
author_sort |
Hamm, Alexandra |
title |
Continentality determines warming or cooling impact of heavy rainfall events on permafrost |
title_short |
Continentality determines warming or cooling impact of heavy rainfall events on permafrost |
title_full |
Continentality determines warming or cooling impact of heavy rainfall events on permafrost |
title_fullStr |
Continentality determines warming or cooling impact of heavy rainfall events on permafrost |
title_full_unstemmed |
Continentality determines warming or cooling impact of heavy rainfall events on permafrost |
title_sort |
continentality determines warming or cooling impact of heavy rainfall events on permafrost |
publisher |
Stockholms universitet, Institutionen för naturgeografi |
publishDate |
2023 |
url |
http://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-220184 https://doi.org/10.1038/s41467-023-39325-4 |
genre |
Active layer thickness permafrost |
genre_facet |
Active layer thickness permafrost |
op_relation |
Nature Communications, 2023, 14, orcid:0000-0003-2785-7672 orcid:0000-0002-4587-6706 http://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-220184 doi:10.1038/s41467-023-39325-4 PMID 37328462 ISI:001018392800019 Scopus 2-s2.0-85162040125 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1038/s41467-023-39325-4 |
container_title |
Nature Communications |
container_volume |
14 |
container_issue |
1 |
_version_ |
1782329623872274432 |