Upscaling methane fluxes from closed chambers to eddy covariance based on a permafrost biogeochemistry integrated model
Abstract Northern peatlands are a major natural source of methane ( CH 4 ) to the atmosphere. Permafrost conditions and spatial heterogeneity are two of the major challenges for estimating CH 4 fluxes from the northern high latitudes. This study reports the development of a new model to upscale CH 4...
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Online Access: | http://dx.doi.org/10.1111/j.1365-2486.2011.02587.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1365-2486.2011.02587.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1365-2486.2011.02587.x |
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crwiley:10.1111/j.1365-2486.2011.02587.x 2024-09-15T18:29:37+00:00 Upscaling methane fluxes from closed chambers to eddy covariance based on a permafrost biogeochemistry integrated model Zhang, Yu Sachs, Torsten Li, Changsheng Boike, Julia 2011 http://dx.doi.org/10.1111/j.1365-2486.2011.02587.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1365-2486.2011.02587.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1365-2486.2011.02587.x en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Global Change Biology volume 18, issue 4, page 1428-1440 ISSN 1354-1013 1365-2486 journal-article 2011 crwiley https://doi.org/10.1111/j.1365-2486.2011.02587.x 2024-07-18T04:23:02Z Abstract Northern peatlands are a major natural source of methane ( CH 4 ) to the atmosphere. Permafrost conditions and spatial heterogeneity are two of the major challenges for estimating CH 4 fluxes from the northern high latitudes. This study reports the development of a new model to upscale CH 4 fluxes from plant communities to ecosystem scale in permafrost peatlands by integrating an existing biogeochemical model DeNitrification‐DeComposition ( DNDC ) with a permafrost model Northern Ecosystem Soil Temperature ( NEST ). A new ebullition module was developed to track the changes of bubble volumes in the soil profile based on the ideal gas law and H enry's law. The integrated model was tested against observations of CH 4 fluxes measured by closed chambers and eddy covariance ( EC ) method in a polygonal permafrost area in the L ena R iver D elta, R ussia. Results from the tests showed that the simulated soil temperature, summer thaw depths and CH 4 fluxes were in agreement with the measurements at the five chamber observation sites; and the modeled area‐weighted average CH 4 fluxes were similar to the EC observations in seasonal patterns and annual totals although discrepancy existed in shorter time scales. This study indicates that the integrated model, NEST – DNDC , is capable of upscaling CH 4 fluxes from plant communities to larger spatial scales. Article in Journal/Newspaper permafrost Wiley Online Library Global Change Biology 18 4 1428 1440 |
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Open Polar |
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Wiley Online Library |
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English |
description |
Abstract Northern peatlands are a major natural source of methane ( CH 4 ) to the atmosphere. Permafrost conditions and spatial heterogeneity are two of the major challenges for estimating CH 4 fluxes from the northern high latitudes. This study reports the development of a new model to upscale CH 4 fluxes from plant communities to ecosystem scale in permafrost peatlands by integrating an existing biogeochemical model DeNitrification‐DeComposition ( DNDC ) with a permafrost model Northern Ecosystem Soil Temperature ( NEST ). A new ebullition module was developed to track the changes of bubble volumes in the soil profile based on the ideal gas law and H enry's law. The integrated model was tested against observations of CH 4 fluxes measured by closed chambers and eddy covariance ( EC ) method in a polygonal permafrost area in the L ena R iver D elta, R ussia. Results from the tests showed that the simulated soil temperature, summer thaw depths and CH 4 fluxes were in agreement with the measurements at the five chamber observation sites; and the modeled area‐weighted average CH 4 fluxes were similar to the EC observations in seasonal patterns and annual totals although discrepancy existed in shorter time scales. This study indicates that the integrated model, NEST – DNDC , is capable of upscaling CH 4 fluxes from plant communities to larger spatial scales. |
format |
Article in Journal/Newspaper |
author |
Zhang, Yu Sachs, Torsten Li, Changsheng Boike, Julia |
spellingShingle |
Zhang, Yu Sachs, Torsten Li, Changsheng Boike, Julia Upscaling methane fluxes from closed chambers to eddy covariance based on a permafrost biogeochemistry integrated model |
author_facet |
Zhang, Yu Sachs, Torsten Li, Changsheng Boike, Julia |
author_sort |
Zhang, Yu |
title |
Upscaling methane fluxes from closed chambers to eddy covariance based on a permafrost biogeochemistry integrated model |
title_short |
Upscaling methane fluxes from closed chambers to eddy covariance based on a permafrost biogeochemistry integrated model |
title_full |
Upscaling methane fluxes from closed chambers to eddy covariance based on a permafrost biogeochemistry integrated model |
title_fullStr |
Upscaling methane fluxes from closed chambers to eddy covariance based on a permafrost biogeochemistry integrated model |
title_full_unstemmed |
Upscaling methane fluxes from closed chambers to eddy covariance based on a permafrost biogeochemistry integrated model |
title_sort |
upscaling methane fluxes from closed chambers to eddy covariance based on a permafrost biogeochemistry integrated model |
publisher |
Wiley |
publishDate |
2011 |
url |
http://dx.doi.org/10.1111/j.1365-2486.2011.02587.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1365-2486.2011.02587.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1365-2486.2011.02587.x |
genre |
permafrost |
genre_facet |
permafrost |
op_source |
Global Change Biology volume 18, issue 4, page 1428-1440 ISSN 1354-1013 1365-2486 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1111/j.1365-2486.2011.02587.x |
container_title |
Global Change Biology |
container_volume |
18 |
container_issue |
4 |
container_start_page |
1428 |
op_container_end_page |
1440 |
_version_ |
1810471032607211520 |