Warming Effects of Spring Rainfall Increase Methane Emissions From Thawing Permafrost
Methane emissions regulate the near-term global warming potential of permafrost thaw, particularly where loss of ice-rich permafrost converts forest and tundra into wetlands. Northern latitudes are expected to get warmer and wetter, and while there is consensus that warming will increase thaw and me...
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Online Access: | http://www.osti.gov/servlets/purl/1611395 https://www.osti.gov/biblio/1611395 https://doi.org/10.1029/2018gl081274 |
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ftosti:oai:osti.gov:1611395 2023-07-30T04:04:04+02:00 Warming Effects of Spring Rainfall Increase Methane Emissions From Thawing Permafrost Neumann, Rebecca B. Moorberg, Colby J. Lundquist, Jessica D. Turner, Jesse C. Waldrop, Mark P. McFarland, Jack W. Euskirchen, Eugenie S. Edgar, Colin W. Turetsky, Merritt R. 2022-04-01 application/pdf http://www.osti.gov/servlets/purl/1611395 https://www.osti.gov/biblio/1611395 https://doi.org/10.1029/2018gl081274 unknown http://www.osti.gov/servlets/purl/1611395 https://www.osti.gov/biblio/1611395 https://doi.org/10.1029/2018gl081274 doi:10.1029/2018gl081274 58 GEOSCIENCES 2022 ftosti https://doi.org/10.1029/2018gl081274 2023-07-11T09:41:19Z Methane emissions regulate the near-term global warming potential of permafrost thaw, particularly where loss of ice-rich permafrost converts forest and tundra into wetlands. Northern latitudes are expected to get warmer and wetter, and while there is consensus that warming will increase thaw and methane emissions, effects of increased precipitation are uncertain. At a thawing wetland complex in Interior Alaska, we found that interactions between rain and deep soil temperatures controlled methane emissions. In rainy years, recharge from the watershed rapidly altered wetland soil temperatures, warming the top ~80cm of soil in spring and summer and cooling it in autumn. When soils were warmed by spring rainfall, methane emissions increased by ~30%. The warm, deep soils early in the growing season likely supported both microbial and plant processes that enhanced emissions. Finally, our study identifies an important and unconsidered role of rain in governing the radiative forcing of thawing permafrost landscapes. Other/Unknown Material Ice permafrost Tundra Alaska SciTec Connect (Office of Scientific and Technical Information - OSTI, U.S. Department of Energy) Geophysical Research Letters 46 3 1393 1401 |
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Open Polar |
collection |
SciTec Connect (Office of Scientific and Technical Information - OSTI, U.S. Department of Energy) |
op_collection_id |
ftosti |
language |
unknown |
topic |
58 GEOSCIENCES |
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58 GEOSCIENCES Neumann, Rebecca B. Moorberg, Colby J. Lundquist, Jessica D. Turner, Jesse C. Waldrop, Mark P. McFarland, Jack W. Euskirchen, Eugenie S. Edgar, Colin W. Turetsky, Merritt R. Warming Effects of Spring Rainfall Increase Methane Emissions From Thawing Permafrost |
topic_facet |
58 GEOSCIENCES |
description |
Methane emissions regulate the near-term global warming potential of permafrost thaw, particularly where loss of ice-rich permafrost converts forest and tundra into wetlands. Northern latitudes are expected to get warmer and wetter, and while there is consensus that warming will increase thaw and methane emissions, effects of increased precipitation are uncertain. At a thawing wetland complex in Interior Alaska, we found that interactions between rain and deep soil temperatures controlled methane emissions. In rainy years, recharge from the watershed rapidly altered wetland soil temperatures, warming the top ~80cm of soil in spring and summer and cooling it in autumn. When soils were warmed by spring rainfall, methane emissions increased by ~30%. The warm, deep soils early in the growing season likely supported both microbial and plant processes that enhanced emissions. Finally, our study identifies an important and unconsidered role of rain in governing the radiative forcing of thawing permafrost landscapes. |
author |
Neumann, Rebecca B. Moorberg, Colby J. Lundquist, Jessica D. Turner, Jesse C. Waldrop, Mark P. McFarland, Jack W. Euskirchen, Eugenie S. Edgar, Colin W. Turetsky, Merritt R. |
author_facet |
Neumann, Rebecca B. Moorberg, Colby J. Lundquist, Jessica D. Turner, Jesse C. Waldrop, Mark P. McFarland, Jack W. Euskirchen, Eugenie S. Edgar, Colin W. Turetsky, Merritt R. |
author_sort |
Neumann, Rebecca B. |
title |
Warming Effects of Spring Rainfall Increase Methane Emissions From Thawing Permafrost |
title_short |
Warming Effects of Spring Rainfall Increase Methane Emissions From Thawing Permafrost |
title_full |
Warming Effects of Spring Rainfall Increase Methane Emissions From Thawing Permafrost |
title_fullStr |
Warming Effects of Spring Rainfall Increase Methane Emissions From Thawing Permafrost |
title_full_unstemmed |
Warming Effects of Spring Rainfall Increase Methane Emissions From Thawing Permafrost |
title_sort |
warming effects of spring rainfall increase methane emissions from thawing permafrost |
publishDate |
2022 |
url |
http://www.osti.gov/servlets/purl/1611395 https://www.osti.gov/biblio/1611395 https://doi.org/10.1029/2018gl081274 |
genre |
Ice permafrost Tundra Alaska |
genre_facet |
Ice permafrost Tundra Alaska |
op_relation |
http://www.osti.gov/servlets/purl/1611395 https://www.osti.gov/biblio/1611395 https://doi.org/10.1029/2018gl081274 doi:10.1029/2018gl081274 |
op_doi |
https://doi.org/10.1029/2018gl081274 |
container_title |
Geophysical Research Letters |
container_volume |
46 |
container_issue |
3 |
container_start_page |
1393 |
op_container_end_page |
1401 |
_version_ |
1772815239322009600 |