Environmental Research Letters / Surface water inundation in the boreal-Arctic : potential impacts on regional methane emissions
Northern wetlands may be vulnerable to increased carbon losses from methane (CH4), a potent greenhouse gas, under current warming trends. However, the dynamic nature of open water inundation and wetting/drying patterns may constrain regional emissions, offsetting the potential magnitude of methane r...
Published in: | Environmental Research Letters |
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Language: | German |
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IOP Publishing
2014
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Online Access: | https://doi.org/10.1088/1748-9326/9/7/075001 https://eplus.uni-salzburg.at/doi/10.1088/1748-9326/9/7/075001 https://resolver.obvsg.at/urn:nbn:at:at-ubs:3-1158 |
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ftunivsalzburg:oai:eplus.uni-salzburg.at:1550655 2023-05-15T14:43:17+02:00 Environmental Research Letters / Surface water inundation in the boreal-Arctic : potential impacts on regional methane emissions Watts, Jennifer D Kimball, John S Bartsch, Annett McDonald, Kyle C 38.95 PLUS:IFFB:ZGIS 2014 text/html https://doi.org/10.1088/1748-9326/9/7/075001 https://eplus.uni-salzburg.at/doi/10.1088/1748-9326/9/7/075001 https://resolver.obvsg.at/urn:nbn:at:at-ubs:3-1158 ger ger IOP Publishing vignette : https://eplus.uni-salzburg.at/titlepage/urn/urn:nbn:at:at-ubs:3-1158/128 vignette : https://eplus.uni-salzburg.at/titlepage/doi/10.1088/1748-9326/9/7/075001/128 doi:10.1088/1748-9326/9/7/075001 https://eplus.uni-salzburg.at/doi/10.1088/1748-9326/9/7/075001 urn:nbn:at:at-ubs:3-1158 https://resolver.obvsg.at/urn:nbn:at:at-ubs:3-1158 local:990131437320203331 system:AC11360644 cc-by_3 Text Article 2014 ftunivsalzburg https://doi.org/10.1088/1748-9326/9/7/075001 2023-04-09T04:46:13Z Northern wetlands may be vulnerable to increased carbon losses from methane (CH4), a potent greenhouse gas, under current warming trends. However, the dynamic nature of open water inundation and wetting/drying patterns may constrain regional emissions, offsetting the potential magnitude of methane release. Here we conduct a satellite data driven model investigation of the combined effects of surface warming and moisture variability on high northern latitude (≥45° N) wetland CH4 emissions, by considering (1) sub-grid scale changes in fractional water inundation (Fw) at 15 day, monthly and annual intervals using 25 km resolution satellite microwave retrievals, and (2) the impact of recent (2003–11) wetting/drying on northern CH4 emissions. The model simulations indicate mean summer contributions of 53 Tg CH4 yr−1 from boreal-Arctic wetlands. Approximately 10% and 16% of the emissions originate from open water and landscapes with emergent vegetation, as determined from respective 15 day Fw means or maximums, and significant increases in regional CH4 efflux were observed when incorporating satellite observed inundated land fractions into the model simulations at monthly or annual time scales. The satellite Fw record reveals widespread wetting across the Arctic continuous permafrost zone, contrasting with surface drying in boreal Canada, Alaska and western Eurasia. Arctic wetting and summer warming increased wetland emissions by 0.56 Tg CH4 yr−1 compared to the 2003–11 mean, but this was mainly offset by decreasing emissions (−0.38 Tg CH4 yr−1) in sub-Arctic areas experiencing surface drying or cooling. These findings underscore the importance of monitoring changes in surface moisture and temperature when assessing the vulnerability of boreal-Arctic wetlands to enhanced greenhouse gas emissions under a shifting climate. Jennifer D. Watts, John S. Kimball, Annett Bartsch and Kyle C. McDonald Article in Journal/Newspaper Arctic permafrost Alaska ePLUS - Open Access Publikationsserver der Universität Salzburg Arctic Canada Kyle ENVELOPE(17.466,17.466,69.506,69.506) Environmental Research Letters 9 7 075001 |
institution |
Open Polar |
collection |
ePLUS - Open Access Publikationsserver der Universität Salzburg |
op_collection_id |
ftunivsalzburg |
language |
German |
description |
Northern wetlands may be vulnerable to increased carbon losses from methane (CH4), a potent greenhouse gas, under current warming trends. However, the dynamic nature of open water inundation and wetting/drying patterns may constrain regional emissions, offsetting the potential magnitude of methane release. Here we conduct a satellite data driven model investigation of the combined effects of surface warming and moisture variability on high northern latitude (≥45° N) wetland CH4 emissions, by considering (1) sub-grid scale changes in fractional water inundation (Fw) at 15 day, monthly and annual intervals using 25 km resolution satellite microwave retrievals, and (2) the impact of recent (2003–11) wetting/drying on northern CH4 emissions. The model simulations indicate mean summer contributions of 53 Tg CH4 yr−1 from boreal-Arctic wetlands. Approximately 10% and 16% of the emissions originate from open water and landscapes with emergent vegetation, as determined from respective 15 day Fw means or maximums, and significant increases in regional CH4 efflux were observed when incorporating satellite observed inundated land fractions into the model simulations at monthly or annual time scales. The satellite Fw record reveals widespread wetting across the Arctic continuous permafrost zone, contrasting with surface drying in boreal Canada, Alaska and western Eurasia. Arctic wetting and summer warming increased wetland emissions by 0.56 Tg CH4 yr−1 compared to the 2003–11 mean, but this was mainly offset by decreasing emissions (−0.38 Tg CH4 yr−1) in sub-Arctic areas experiencing surface drying or cooling. These findings underscore the importance of monitoring changes in surface moisture and temperature when assessing the vulnerability of boreal-Arctic wetlands to enhanced greenhouse gas emissions under a shifting climate. Jennifer D. Watts, John S. Kimball, Annett Bartsch and Kyle C. McDonald |
format |
Article in Journal/Newspaper |
author |
Watts, Jennifer D Kimball, John S Bartsch, Annett McDonald, Kyle C |
spellingShingle |
Watts, Jennifer D Kimball, John S Bartsch, Annett McDonald, Kyle C Environmental Research Letters / Surface water inundation in the boreal-Arctic : potential impacts on regional methane emissions |
author_facet |
Watts, Jennifer D Kimball, John S Bartsch, Annett McDonald, Kyle C |
author_sort |
Watts, Jennifer D |
title |
Environmental Research Letters / Surface water inundation in the boreal-Arctic : potential impacts on regional methane emissions |
title_short |
Environmental Research Letters / Surface water inundation in the boreal-Arctic : potential impacts on regional methane emissions |
title_full |
Environmental Research Letters / Surface water inundation in the boreal-Arctic : potential impacts on regional methane emissions |
title_fullStr |
Environmental Research Letters / Surface water inundation in the boreal-Arctic : potential impacts on regional methane emissions |
title_full_unstemmed |
Environmental Research Letters / Surface water inundation in the boreal-Arctic : potential impacts on regional methane emissions |
title_sort |
environmental research letters / surface water inundation in the boreal-arctic : potential impacts on regional methane emissions |
publisher |
IOP Publishing |
publishDate |
2014 |
url |
https://doi.org/10.1088/1748-9326/9/7/075001 https://eplus.uni-salzburg.at/doi/10.1088/1748-9326/9/7/075001 https://resolver.obvsg.at/urn:nbn:at:at-ubs:3-1158 |
op_coverage |
38.95 PLUS:IFFB:ZGIS |
long_lat |
ENVELOPE(17.466,17.466,69.506,69.506) |
geographic |
Arctic Canada Kyle |
geographic_facet |
Arctic Canada Kyle |
genre |
Arctic permafrost Alaska |
genre_facet |
Arctic permafrost Alaska |
op_relation |
vignette : https://eplus.uni-salzburg.at/titlepage/urn/urn:nbn:at:at-ubs:3-1158/128 vignette : https://eplus.uni-salzburg.at/titlepage/doi/10.1088/1748-9326/9/7/075001/128 doi:10.1088/1748-9326/9/7/075001 https://eplus.uni-salzburg.at/doi/10.1088/1748-9326/9/7/075001 urn:nbn:at:at-ubs:3-1158 https://resolver.obvsg.at/urn:nbn:at:at-ubs:3-1158 local:990131437320203331 system:AC11360644 |
op_rights |
cc-by_3 |
op_doi |
https://doi.org/10.1088/1748-9326/9/7/075001 |
container_title |
Environmental Research Letters |
container_volume |
9 |
container_issue |
7 |
container_start_page |
075001 |
_version_ |
1766314969825017856 |