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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Arctic Data Center
2021
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dataone:doi:10.18739/A2610VT0G 2023-11-08T14:14:16+01:00 Thermokarst acceleration in Arctic tundra driven by climate change and fire disturbance, 1950-2015 Yaping Chen Mark Lara Benjamin Jones Gerald Frost Feng sheng Hu Northern Alaskan tundra, which encompasses 6 tundra ecoregions: Noatak National Preserve, Arctic Coastal Plain, Brooks Range Foothills, Brooks Range, Kotzebue Lowlands, and Seward Peninsula. ENVELOPE(-173.191,-142.518,71.184,63.188) BEGINDATE: 1950-01-01T00:00:00Z ENDDATE: 2015-12-31T00:00:00Z 2021-12-17T00:00:00Z https://doi.org/10.18739/A2610VT0G unknown Arctic Data Center climate change permafrost degradation thermokarst fire disturbance repeat burn Arctic Tundra biome Dataset 2021 dataone:urn:node:ARCTIC https://doi.org/10.18739/A2610VT0G 2023-11-08T13:47:18Z 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 Brooks Range Climate change permafrost Seward Peninsula Thermokarst Tundra Alaska Arctic Data Center (via DataONE) Arctic ENVELOPE(-173.191,-142.518,71.184,63.188) |
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Open Polar |
collection |
Arctic Data Center (via DataONE) |
op_collection_id |
dataone:urn:node:ARCTIC |
language |
unknown |
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 Yaping Chen Mark Lara Benjamin Jones Gerald Frost Feng sheng Hu 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 |
Yaping Chen Mark Lara Benjamin Jones Gerald Frost Feng sheng Hu |
author_facet |
Yaping Chen Mark Lara Benjamin Jones Gerald Frost Feng sheng Hu |
author_sort |
Yaping Chen |
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 |
Arctic Data Center |
publishDate |
2021 |
url |
https://doi.org/10.18739/A2610VT0G |
op_coverage |
Northern Alaskan tundra, which encompasses 6 tundra ecoregions: Noatak National Preserve, Arctic Coastal Plain, Brooks Range Foothills, Brooks Range, Kotzebue Lowlands, and Seward Peninsula. ENVELOPE(-173.191,-142.518,71.184,63.188) BEGINDATE: 1950-01-01T00:00:00Z ENDDATE: 2015-12-31T00:00:00Z |
long_lat |
ENVELOPE(-173.191,-142.518,71.184,63.188) |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic Brooks Range Climate change permafrost Seward Peninsula Thermokarst Tundra Alaska |
genre_facet |
Arctic Brooks Range Climate change permafrost Seward Peninsula Thermokarst Tundra Alaska |
op_doi |
https://doi.org/10.18739/A2610VT0G |
_version_ |
1782012699967750144 |