Spatial and temporal dynamics in eddy covariance observations of methane fluxes at a tundra site in Northeastern Siberia
In the past two decades, the eddy covariance technique has been used for an increasing number of methane flux studies at an ecosystem scale. Previously, most of these studies used a closed path setup with a tunable diode laser spectrometer (TDL). Although this method worked well, the TDL has to be c...
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ftunivwagenin:oai:library.wur.nl:wurpubs/418327 2024-02-04T09:58:32+01:00 Spatial and temporal dynamics in eddy covariance observations of methane fluxes at a tundra site in Northeastern Siberia Parmentier, F.J.W. van Huissteden, J. van der Molen, M.K. Dolman, A.J. Schaepman-Strub, G. Karsanaev, S.A. Maximov, T.C. 2011 application/pdf https://research.wur.nl/en/publications/spatial-and-temporal-dynamics-in-eddy-covariance-observations-of- https://doi.org/10.1029/2010JG001637 en eng https://edepot.wur.nl/192481 https://research.wur.nl/en/publications/spatial-and-temporal-dynamics-in-eddy-covariance-observations-of- doi:10.1029/2010JG001637 info:eu-repo/semantics/restrictedAccess Wageningen University & Research Journal of Geophysical Research: Biogeosciences 116 (2011) ISSN: 2169-8953 arctic tundra atmosphere carbon-dioxide climate-change co2 emission exchange net carbon system water-vapor info:eu-repo/semantics/article Article/Letter to editor info:eu-repo/semantics/publishedVersion 2011 ftunivwagenin https://doi.org/10.1029/2010JG001637 2024-01-10T23:22:00Z In the past two decades, the eddy covariance technique has been used for an increasing number of methane flux studies at an ecosystem scale. Previously, most of these studies used a closed path setup with a tunable diode laser spectrometer (TDL). Although this method worked well, the TDL has to be calibrated regularly and cooled with liquid nitrogen or a cryogenic system, which limits its use in remote areas. Recently, a new closed path technique has been introduced that uses off-axis integrated cavity output spectroscopy that does not require regular calibration or liquid nitrogen to operate and can thus be applied in remote areas. In the summer of 2008 and 2009, this eddy covariance technique was used to study methane fluxes from a tundra site in northeastern Siberia. The measured emissions showed to be very dependent on the fetch area, due to a large contrast in dry and wet vegetation in between wind directions. Furthermore, the observed short- and long-term variation of methane fluxes could be readily explained with a nonlinear model that used relationships with atmospheric stability, soil temperature, and water level. This model was subsequently extended to fieldwork periods preceding the eddy covariance setup and applied to evaluate a spatially integrated flux. The model result showed that average fluxes were 56.5, 48.7, and 30.4 nmol CH4 m-2 s-1 for the summers of 2007 to 2009. While previous models of the same type were only applicable to daily averages, the method described can be used on a much higher temporal resolution, making it suitable for gap filling. Furthermore, by partitioning the measured fluxes along wind direction, this model can also be used in areas with nonuniform terrain but nonetheless provide spatially integrated fluxes Article in Journal/Newspaper Arctic Climate change Tundra Siberia Wageningen UR (University & Research Centre): Digital Library Arctic Journal of Geophysical Research 116 G3 |
institution |
Open Polar |
collection |
Wageningen UR (University & Research Centre): Digital Library |
op_collection_id |
ftunivwagenin |
language |
English |
topic |
arctic tundra atmosphere carbon-dioxide climate-change co2 emission exchange net carbon system water-vapor |
spellingShingle |
arctic tundra atmosphere carbon-dioxide climate-change co2 emission exchange net carbon system water-vapor Parmentier, F.J.W. van Huissteden, J. van der Molen, M.K. Dolman, A.J. Schaepman-Strub, G. Karsanaev, S.A. Maximov, T.C. Spatial and temporal dynamics in eddy covariance observations of methane fluxes at a tundra site in Northeastern Siberia |
topic_facet |
arctic tundra atmosphere carbon-dioxide climate-change co2 emission exchange net carbon system water-vapor |
description |
In the past two decades, the eddy covariance technique has been used for an increasing number of methane flux studies at an ecosystem scale. Previously, most of these studies used a closed path setup with a tunable diode laser spectrometer (TDL). Although this method worked well, the TDL has to be calibrated regularly and cooled with liquid nitrogen or a cryogenic system, which limits its use in remote areas. Recently, a new closed path technique has been introduced that uses off-axis integrated cavity output spectroscopy that does not require regular calibration or liquid nitrogen to operate and can thus be applied in remote areas. In the summer of 2008 and 2009, this eddy covariance technique was used to study methane fluxes from a tundra site in northeastern Siberia. The measured emissions showed to be very dependent on the fetch area, due to a large contrast in dry and wet vegetation in between wind directions. Furthermore, the observed short- and long-term variation of methane fluxes could be readily explained with a nonlinear model that used relationships with atmospheric stability, soil temperature, and water level. This model was subsequently extended to fieldwork periods preceding the eddy covariance setup and applied to evaluate a spatially integrated flux. The model result showed that average fluxes were 56.5, 48.7, and 30.4 nmol CH4 m-2 s-1 for the summers of 2007 to 2009. While previous models of the same type were only applicable to daily averages, the method described can be used on a much higher temporal resolution, making it suitable for gap filling. Furthermore, by partitioning the measured fluxes along wind direction, this model can also be used in areas with nonuniform terrain but nonetheless provide spatially integrated fluxes |
format |
Article in Journal/Newspaper |
author |
Parmentier, F.J.W. van Huissteden, J. van der Molen, M.K. Dolman, A.J. Schaepman-Strub, G. Karsanaev, S.A. Maximov, T.C. |
author_facet |
Parmentier, F.J.W. van Huissteden, J. van der Molen, M.K. Dolman, A.J. Schaepman-Strub, G. Karsanaev, S.A. Maximov, T.C. |
author_sort |
Parmentier, F.J.W. |
title |
Spatial and temporal dynamics in eddy covariance observations of methane fluxes at a tundra site in Northeastern Siberia |
title_short |
Spatial and temporal dynamics in eddy covariance observations of methane fluxes at a tundra site in Northeastern Siberia |
title_full |
Spatial and temporal dynamics in eddy covariance observations of methane fluxes at a tundra site in Northeastern Siberia |
title_fullStr |
Spatial and temporal dynamics in eddy covariance observations of methane fluxes at a tundra site in Northeastern Siberia |
title_full_unstemmed |
Spatial and temporal dynamics in eddy covariance observations of methane fluxes at a tundra site in Northeastern Siberia |
title_sort |
spatial and temporal dynamics in eddy covariance observations of methane fluxes at a tundra site in northeastern siberia |
publishDate |
2011 |
url |
https://research.wur.nl/en/publications/spatial-and-temporal-dynamics-in-eddy-covariance-observations-of- https://doi.org/10.1029/2010JG001637 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic Climate change Tundra Siberia |
genre_facet |
Arctic Climate change Tundra Siberia |
op_source |
Journal of Geophysical Research: Biogeosciences 116 (2011) ISSN: 2169-8953 |
op_relation |
https://edepot.wur.nl/192481 https://research.wur.nl/en/publications/spatial-and-temporal-dynamics-in-eddy-covariance-observations-of- doi:10.1029/2010JG001637 |
op_rights |
info:eu-repo/semantics/restrictedAccess Wageningen University & Research |
op_doi |
https://doi.org/10.1029/2010JG001637 |
container_title |
Journal of Geophysical Research |
container_volume |
116 |
container_issue |
G3 |
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1789962986839867392 |