Thermokarst acceleration in Arctic tundra driven by climate change and fire disturbance, 1950-2015
Climate warming is projected to intensify tundra wildfire, with profound implications for permafrost thaw. A major uncertainty is how increased burning will interact with climate change to exacerbate thermokarst (ground-surface collapse resulting from permafrost thaw). Here we used ~70 years of remo...
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NSF Arctic Data Center
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ftdatacite:10.18739/a2610vt0g 2023-05-15T14:37:44+02:00 Thermokarst acceleration in Arctic tundra driven by climate change and fire disturbance, 1950-2015 Chen, Yaping Lara, Mark Jones, Benjamin Frost, Gerald Hu, Feng Sheng 2021 text/xml https://dx.doi.org/10.18739/a2610vt0g https://arcticdata.io/catalog/view/doi:10.18739/A2610VT0G en eng NSF Arctic Data Center climate change permafrost degradation thermokarst fire disturbance repeat burn Arctic Tundra biome dataset Dataset 2021 ftdatacite https://doi.org/10.18739/a2610vt0g 2022-02-08T14:59:33Z Climate warming is projected to intensify tundra wildfire, with profound implications for permafrost thaw. A major uncertainty is how increased burning will interact with climate change to exacerbate thermokarst (ground-surface collapse resulting from permafrost thaw). Here we used ~70 years of remote sensing observation combined with spatially-explicit modeling to show that thermokarst rates increased by ~60% with warming climate and wildfire from 1950 to 2015 in Arctic Alaska. Wildfire amplified thermokarst over 40+ years, cumulatively creating ~9 times thermokarst formation as that in unburned tundra. However, thermokarst triggered by repeat burns did not differ from that triggered by single burns, irrespective of time between fires. Our simulation identified climate change as a principal driver for all thermokarst formed during 1950-2015 (4,700 square kilometers (km2)) in Arctic Alaska, but wildfire was disproportionately responsible for 10.5% of the thermokarst by burning merely 3.4% of the landscape. These results combined suggest that climate change and wildfire will synergistically accelerate thermokarst as the Arctic transitions in this century. Dataset Arctic Climate change permafrost Thermokarst Tundra Alaska DataCite Metadata Store (German National Library of Science and Technology) Arctic |
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Open Polar |
collection |
DataCite Metadata Store (German National Library of Science and Technology) |
op_collection_id |
ftdatacite |
language |
English |
topic |
climate change permafrost degradation thermokarst fire disturbance repeat burn Arctic Tundra biome |
spellingShingle |
climate change permafrost degradation thermokarst fire disturbance repeat burn Arctic Tundra biome Chen, Yaping Lara, Mark Jones, Benjamin Frost, Gerald Hu, Feng Sheng Thermokarst acceleration in Arctic tundra driven by climate change and fire disturbance, 1950-2015 |
topic_facet |
climate change permafrost degradation thermokarst fire disturbance repeat burn Arctic Tundra biome |
description |
Climate warming is projected to intensify tundra wildfire, with profound implications for permafrost thaw. A major uncertainty is how increased burning will interact with climate change to exacerbate thermokarst (ground-surface collapse resulting from permafrost thaw). Here we used ~70 years of remote sensing observation combined with spatially-explicit modeling to show that thermokarst rates increased by ~60% with warming climate and wildfire from 1950 to 2015 in Arctic Alaska. Wildfire amplified thermokarst over 40+ years, cumulatively creating ~9 times thermokarst formation as that in unburned tundra. However, thermokarst triggered by repeat burns did not differ from that triggered by single burns, irrespective of time between fires. Our simulation identified climate change as a principal driver for all thermokarst formed during 1950-2015 (4,700 square kilometers (km2)) in Arctic Alaska, but wildfire was disproportionately responsible for 10.5% of the thermokarst by burning merely 3.4% of the landscape. These results combined suggest that climate change and wildfire will synergistically accelerate thermokarst as the Arctic transitions in this century. |
format |
Dataset |
author |
Chen, Yaping Lara, Mark Jones, Benjamin Frost, Gerald Hu, Feng Sheng |
author_facet |
Chen, Yaping Lara, Mark Jones, Benjamin Frost, Gerald Hu, Feng Sheng |
author_sort |
Chen, Yaping |
title |
Thermokarst acceleration in Arctic tundra driven by climate change and fire disturbance, 1950-2015 |
title_short |
Thermokarst acceleration in Arctic tundra driven by climate change and fire disturbance, 1950-2015 |
title_full |
Thermokarst acceleration in Arctic tundra driven by climate change and fire disturbance, 1950-2015 |
title_fullStr |
Thermokarst acceleration in Arctic tundra driven by climate change and fire disturbance, 1950-2015 |
title_full_unstemmed |
Thermokarst acceleration in Arctic tundra driven by climate change and fire disturbance, 1950-2015 |
title_sort |
thermokarst acceleration in arctic tundra driven by climate change and fire disturbance, 1950-2015 |
publisher |
NSF Arctic Data Center |
publishDate |
2021 |
url |
https://dx.doi.org/10.18739/a2610vt0g https://arcticdata.io/catalog/view/doi:10.18739/A2610VT0G |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic Climate change permafrost Thermokarst Tundra Alaska |
genre_facet |
Arctic Climate change permafrost Thermokarst Tundra Alaska |
op_doi |
https://doi.org/10.18739/a2610vt0g |
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1766309929688236032 |