Model estimates of climate controls on pan-Arctic wetland methane emissions
abstract: Climate factors including soil temperature and moisture, incident solar radiation, and atmospheric carbon dioxide concentration are important environmental controls on methane (CH[subscript 4]) emissions from northern wetlands. We investigated the spatiotemporal distributions of the influe...
Published in: | Biogeosciences |
---|---|
Other Authors: | , , , , , |
Format: | Text |
Language: | English |
Published: |
2015
|
Subjects: | |
Online Access: | https://doi.org/10.5194/bg-12-6259-2015 http://hdl.handle.net/2286/R.I.44868 |
id |
ftarizonastateun:item:44868 |
---|---|
record_format |
openpolar |
spelling |
ftarizonastateun:item:44868 2023-05-15T14:25:31+02:00 Model estimates of climate controls on pan-Arctic wetland methane emissions Chen, X. (Author) Bohn, Theodore (ASU author) Lettenmaier, D. P. (Author) College of Liberal Arts and Sciences School of Earth and Space Exploration Julie Ann Wrigley Global Institute of Sustainability 2015-11-02 19 pages https://doi.org/10.5194/bg-12-6259-2015 http://hdl.handle.net/2286/R.I.44868 eng eng BIOGEOSCIENCES doi:10.5194/bg-12-6259-2015 ISSN: 1726-4170 ISSN: 1726-4189 Chen, X., Bohn, T. J., & Lettenmaier, D. P. (2015). Model estimates of climate controls on pan-Arctic wetland methane emissions. Biogeosciences, 12(21), 6259-6277. doi:10.5194/bg-12-6259-2015 http://hdl.handle.net/2286/R.I.44868 http://rightsstatements.org/vocab/InC/1.0/ http://creativecommons.org/licenses/by/4.0 CC-BY Text 2015 ftarizonastateun https://doi.org/10.5194/bg-12-6259-2015 2018-06-30T22:52:38Z abstract: Climate factors including soil temperature and moisture, incident solar radiation, and atmospheric carbon dioxide concentration are important environmental controls on methane (CH[subscript 4]) emissions from northern wetlands. We investigated the spatiotemporal distributions of the influence of these factors on northern high-latitude wetland CH[subscript 4] emissions using an enhanced version of the Variable Infiltration Capacity (VIC) land surface model. We simulated CH[subscript 4] emissions from wetlands across the pan-Arctic domain over the period 1948–2006, yielding annual average emissions of 36.1 ± 6.7 Tg CH[subscript 4] yr[superscript −1] for the period 1997–2006. We characterized historical sensitivities of CH[subscript 4] emissions to air temperature, precipitation, incident long- and shortwave radiation, and atmospheric [CO[subscript 2]] as a function of average summer air temperature and precipitation. Emissions from relatively warm and dry wetlands in the southern (permafrost-free) portion of the domain were positively correlated with precipitation and negatively correlated with air temperature, while emissions from wetter and colder wetlands further north (permafrost) were positively correlated with air temperature. Over the entire period 1948–2006, our reconstructed CH[subscript 4] emissions increased by 20 %, the majority of which can be attributed to an increasing trend in summer air temperature. We estimated future emissions in response to 21st century warming as predicted by CMIP5 (Coupled Model Intercomparison Project Phase 5) model projections to result in end-of-century CH[subscript 4] emissions 38–53 % higher than our reconstructed 1997–2006 emissions, accompanied by the northward migration of warmer and drier than optimal conditions for CH[subscript 4] emissions, implying a reduced role for temperature in driving future increases in emissions. This article and any associated published material is distributed under the Creative Commons Attribution 3.0 License. View the article as published at: http://www.biogeosciences.net/12/6259/2015/ Text Arctic Arctic permafrost Arizona State University: ASU Digital Repository Arctic Biogeosciences 12 21 6259 6277 |
institution |
Open Polar |
collection |
Arizona State University: ASU Digital Repository |
op_collection_id |
ftarizonastateun |
language |
English |
description |
abstract: Climate factors including soil temperature and moisture, incident solar radiation, and atmospheric carbon dioxide concentration are important environmental controls on methane (CH[subscript 4]) emissions from northern wetlands. We investigated the spatiotemporal distributions of the influence of these factors on northern high-latitude wetland CH[subscript 4] emissions using an enhanced version of the Variable Infiltration Capacity (VIC) land surface model. We simulated CH[subscript 4] emissions from wetlands across the pan-Arctic domain over the period 1948–2006, yielding annual average emissions of 36.1 ± 6.7 Tg CH[subscript 4] yr[superscript −1] for the period 1997–2006. We characterized historical sensitivities of CH[subscript 4] emissions to air temperature, precipitation, incident long- and shortwave radiation, and atmospheric [CO[subscript 2]] as a function of average summer air temperature and precipitation. Emissions from relatively warm and dry wetlands in the southern (permafrost-free) portion of the domain were positively correlated with precipitation and negatively correlated with air temperature, while emissions from wetter and colder wetlands further north (permafrost) were positively correlated with air temperature. Over the entire period 1948–2006, our reconstructed CH[subscript 4] emissions increased by 20 %, the majority of which can be attributed to an increasing trend in summer air temperature. We estimated future emissions in response to 21st century warming as predicted by CMIP5 (Coupled Model Intercomparison Project Phase 5) model projections to result in end-of-century CH[subscript 4] emissions 38–53 % higher than our reconstructed 1997–2006 emissions, accompanied by the northward migration of warmer and drier than optimal conditions for CH[subscript 4] emissions, implying a reduced role for temperature in driving future increases in emissions. This article and any associated published material is distributed under the Creative Commons Attribution 3.0 License. View the article as published at: http://www.biogeosciences.net/12/6259/2015/ |
author2 |
Chen, X. (Author) Bohn, Theodore (ASU author) Lettenmaier, D. P. (Author) College of Liberal Arts and Sciences School of Earth and Space Exploration Julie Ann Wrigley Global Institute of Sustainability |
format |
Text |
title |
Model estimates of climate controls on pan-Arctic wetland methane emissions |
spellingShingle |
Model estimates of climate controls on pan-Arctic wetland methane emissions |
title_short |
Model estimates of climate controls on pan-Arctic wetland methane emissions |
title_full |
Model estimates of climate controls on pan-Arctic wetland methane emissions |
title_fullStr |
Model estimates of climate controls on pan-Arctic wetland methane emissions |
title_full_unstemmed |
Model estimates of climate controls on pan-Arctic wetland methane emissions |
title_sort |
model estimates of climate controls on pan-arctic wetland methane emissions |
publishDate |
2015 |
url |
https://doi.org/10.5194/bg-12-6259-2015 http://hdl.handle.net/2286/R.I.44868 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic Arctic permafrost |
genre_facet |
Arctic Arctic permafrost |
op_relation |
BIOGEOSCIENCES doi:10.5194/bg-12-6259-2015 ISSN: 1726-4170 ISSN: 1726-4189 Chen, X., Bohn, T. J., & Lettenmaier, D. P. (2015). Model estimates of climate controls on pan-Arctic wetland methane emissions. Biogeosciences, 12(21), 6259-6277. doi:10.5194/bg-12-6259-2015 http://hdl.handle.net/2286/R.I.44868 |
op_rights |
http://rightsstatements.org/vocab/InC/1.0/ http://creativecommons.org/licenses/by/4.0 |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.5194/bg-12-6259-2015 |
container_title |
Biogeosciences |
container_volume |
12 |
container_issue |
21 |
container_start_page |
6259 |
op_container_end_page |
6277 |
_version_ |
1766297911982817280 |