Atlantic SSTs control regime shifts in forest fire activity of Northern Scandinavia
Understanding the drivers of the boreal forest fire activity is challenging due to the complexity of the interactions driving fire regimes. We analyzed drivers of forest fire activity in Northern Scandinavia (above 60 N) by combining modern and proxy data over the Holocene. The results suggest that...
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ftpubmed:oai:pubmedcentral.nih.gov:4778016 2023-05-15T17:30:24+02:00 Atlantic SSTs control regime shifts in forest fire activity of Northern Scandinavia Drobyshev, Igor Bergeron, Yves Vernal, Anne de Moberg, Anders Ali, Adam A. Niklasson, Mats 2016-03-04 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4778016/ http://www.ncbi.nlm.nih.gov/pubmed/26940995 https://doi.org/10.1038/srep22532 en eng Nature Publishing Group http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4778016/ http://www.ncbi.nlm.nih.gov/pubmed/26940995 http://dx.doi.org/10.1038/srep22532 Copyright © 2016, Macmillan Publishers Limited http://creativecommons.org/licenses/by/4.0/ This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/ CC-BY Article Text 2016 ftpubmed https://doi.org/10.1038/srep22532 2016-03-20T01:26:41Z Understanding the drivers of the boreal forest fire activity is challenging due to the complexity of the interactions driving fire regimes. We analyzed drivers of forest fire activity in Northern Scandinavia (above 60 N) by combining modern and proxy data over the Holocene. The results suggest that the cold climate in northern Scandinavia was generally characterized by dry conditions favourable to periods of regionally increased fire activity. We propose that the cold conditions over the northern North Atlantic, associated with low SSTs, expansion of sea ice cover, and the southward shift in the position of the subpolar gyre, redirect southward the precipitation over Scandinavia, associated with the westerlies. This dynamics strengthens high pressure systems over Scandinavia and results in increased regional fire activity. Our study reveals a previously undocumented teleconnection between large scale climate and ocean dynamics over the North Atlantic and regional boreal forest fire activity in Northern Scandinavia. Consistency of the pattern observed annually through millennium scales suggests that a strong link between Atlantic SST and fire activity on multiple temporal scales over the entire Holocene is relevant for understanding future fire activity across the European boreal zone. Text North Atlantic Sea ice PubMed Central (PMC) Scientific Reports 6 1 |
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Article Drobyshev, Igor Bergeron, Yves Vernal, Anne de Moberg, Anders Ali, Adam A. Niklasson, Mats Atlantic SSTs control regime shifts in forest fire activity of Northern Scandinavia |
topic_facet |
Article |
description |
Understanding the drivers of the boreal forest fire activity is challenging due to the complexity of the interactions driving fire regimes. We analyzed drivers of forest fire activity in Northern Scandinavia (above 60 N) by combining modern and proxy data over the Holocene. The results suggest that the cold climate in northern Scandinavia was generally characterized by dry conditions favourable to periods of regionally increased fire activity. We propose that the cold conditions over the northern North Atlantic, associated with low SSTs, expansion of sea ice cover, and the southward shift in the position of the subpolar gyre, redirect southward the precipitation over Scandinavia, associated with the westerlies. This dynamics strengthens high pressure systems over Scandinavia and results in increased regional fire activity. Our study reveals a previously undocumented teleconnection between large scale climate and ocean dynamics over the North Atlantic and regional boreal forest fire activity in Northern Scandinavia. Consistency of the pattern observed annually through millennium scales suggests that a strong link between Atlantic SST and fire activity on multiple temporal scales over the entire Holocene is relevant for understanding future fire activity across the European boreal zone. |
format |
Text |
author |
Drobyshev, Igor Bergeron, Yves Vernal, Anne de Moberg, Anders Ali, Adam A. Niklasson, Mats |
author_facet |
Drobyshev, Igor Bergeron, Yves Vernal, Anne de Moberg, Anders Ali, Adam A. Niklasson, Mats |
author_sort |
Drobyshev, Igor |
title |
Atlantic SSTs control regime shifts in forest fire activity of Northern Scandinavia |
title_short |
Atlantic SSTs control regime shifts in forest fire activity of Northern Scandinavia |
title_full |
Atlantic SSTs control regime shifts in forest fire activity of Northern Scandinavia |
title_fullStr |
Atlantic SSTs control regime shifts in forest fire activity of Northern Scandinavia |
title_full_unstemmed |
Atlantic SSTs control regime shifts in forest fire activity of Northern Scandinavia |
title_sort |
atlantic ssts control regime shifts in forest fire activity of northern scandinavia |
publisher |
Nature Publishing Group |
publishDate |
2016 |
url |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4778016/ http://www.ncbi.nlm.nih.gov/pubmed/26940995 https://doi.org/10.1038/srep22532 |
genre |
North Atlantic Sea ice |
genre_facet |
North Atlantic Sea ice |
op_relation |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4778016/ http://www.ncbi.nlm.nih.gov/pubmed/26940995 http://dx.doi.org/10.1038/srep22532 |
op_rights |
Copyright © 2016, Macmillan Publishers Limited http://creativecommons.org/licenses/by/4.0/ This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/ |
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CC-BY |
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https://doi.org/10.1038/srep22532 |
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