Data for "Extremely wet summer events enhance permafrost thaw for multiple years in Siberian tundra" ...
Permafrost thaw can accelerate climate warming by releasing carbon from previously frozen soil in the form of greenhouse gases. Rainfall extremes have been proposed to increase permafrost thaw, but the magnitude and duration of this effect are poorly understood. Here we present empirical evidence sh...
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DANS Data Station Physical and Technical Sciences
2022
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Online Access: | https://dx.doi.org/10.17026/dans-xdt-tf9f https://phys-techsciences.datastations.nl/citation?persistentId=doi:10.17026/dans-xdt-tf9f |
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ftdatacite:10.17026/dans-xdt-tf9f 2024-01-28T10:03:48+01:00 Data for "Extremely wet summer events enhance permafrost thaw for multiple years in Siberian tundra" ... Magnússon, R. Í. A. Hamm 2022 https://dx.doi.org/10.17026/dans-xdt-tf9f https://phys-techsciences.datastations.nl/citation?persistentId=doi:10.17026/dans-xdt-tf9f en eng DANS Data Station Physical and Technical Sciences Dataset dataset 2022 ftdatacite https://doi.org/10.17026/dans-xdt-tf9f 2024-01-04T20:31:49Z Permafrost thaw can accelerate climate warming by releasing carbon from previously frozen soil in the form of greenhouse gases. Rainfall extremes have been proposed to increase permafrost thaw, but the magnitude and duration of this effect are poorly understood. Here we present empirical evidence showing that one extremely wet summer (+100mm; 120% increase relative to average June – August rainfall) enhanced thaw depth by up to 35% in a controlled irrigation experiment in an ice-rich Siberian tundra site. The effect persisted over two subsequent summers, demonstrating a carry-over effect of extremely wet summers. Using soil thermal hydrological modelling, we show that rainfall extremes delayed autumn freeze-up and rainfall-induced increases in thaw were most pronounced for warm summers with mid-summer precipitation rainfall extremes. Our results suggest that, with rainfall and temperature both increasing in the Arctic, permafrost will likely degrade and disappear faster than is currently anticipated based on ... Dataset Arctic Ice permafrost Tundra DataCite Metadata Store (German National Library of Science and Technology) Arctic |
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Open Polar |
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DataCite Metadata Store (German National Library of Science and Technology) |
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ftdatacite |
language |
English |
description |
Permafrost thaw can accelerate climate warming by releasing carbon from previously frozen soil in the form of greenhouse gases. Rainfall extremes have been proposed to increase permafrost thaw, but the magnitude and duration of this effect are poorly understood. Here we present empirical evidence showing that one extremely wet summer (+100mm; 120% increase relative to average June – August rainfall) enhanced thaw depth by up to 35% in a controlled irrigation experiment in an ice-rich Siberian tundra site. The effect persisted over two subsequent summers, demonstrating a carry-over effect of extremely wet summers. Using soil thermal hydrological modelling, we show that rainfall extremes delayed autumn freeze-up and rainfall-induced increases in thaw were most pronounced for warm summers with mid-summer precipitation rainfall extremes. Our results suggest that, with rainfall and temperature both increasing in the Arctic, permafrost will likely degrade and disappear faster than is currently anticipated based on ... |
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Dataset |
author |
Magnússon, R. Í. A. Hamm |
spellingShingle |
Magnússon, R. Í. A. Hamm Data for "Extremely wet summer events enhance permafrost thaw for multiple years in Siberian tundra" ... |
author_facet |
Magnússon, R. Í. A. Hamm |
author_sort |
Magnússon, R. Í. |
title |
Data for "Extremely wet summer events enhance permafrost thaw for multiple years in Siberian tundra" ... |
title_short |
Data for "Extremely wet summer events enhance permafrost thaw for multiple years in Siberian tundra" ... |
title_full |
Data for "Extremely wet summer events enhance permafrost thaw for multiple years in Siberian tundra" ... |
title_fullStr |
Data for "Extremely wet summer events enhance permafrost thaw for multiple years in Siberian tundra" ... |
title_full_unstemmed |
Data for "Extremely wet summer events enhance permafrost thaw for multiple years in Siberian tundra" ... |
title_sort |
data for "extremely wet summer events enhance permafrost thaw for multiple years in siberian tundra" ... |
publisher |
DANS Data Station Physical and Technical Sciences |
publishDate |
2022 |
url |
https://dx.doi.org/10.17026/dans-xdt-tf9f https://phys-techsciences.datastations.nl/citation?persistentId=doi:10.17026/dans-xdt-tf9f |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic Ice permafrost Tundra |
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Arctic Ice permafrost Tundra |
op_doi |
https://doi.org/10.17026/dans-xdt-tf9f |
_version_ |
1789329277827678208 |