Measurements of CH 4 and N 2 O fluxes at the landscape scale using micrometeorological methods
Flux gradient, eddy covariance and relaxed eddy accumulation methods were applied to measure CH 4 and N 2 O emissions from peatlands and arable land respectively. Measurements of N 2 O emission by eddy covariance using tunable diode laser spectroscopy provided fluxes ranging from 2 to 60 µ mol N 2 O...
Published in: | Philosophical Transactions of the Royal Society of London. Series A: Physical and Engineering Sciences |
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Format: | Article in Journal/Newspaper |
Language: | English |
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1995
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Online Access: | http://dx.doi.org/10.1098/rsta.1995.0038 https://royalsocietypublishing.org/doi/pdf/10.1098/rsta.1995.0038 |
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crroyalsociety:10.1098/rsta.1995.0038 2024-06-02T08:07:54+00:00 Measurements of CH 4 and N 2 O fluxes at the landscape scale using micrometeorological methods 1995 http://dx.doi.org/10.1098/rsta.1995.0038 https://royalsocietypublishing.org/doi/pdf/10.1098/rsta.1995.0038 en eng The Royal Society https://royalsociety.org/journals/ethics-policies/data-sharing-mining/ Philosophical Transactions of the Royal Society of London. Series A: Physical and Engineering Sciences volume 351, issue 1696, page 339-356 ISSN 0962-8428 2054-0299 journal-article 1995 crroyalsociety https://doi.org/10.1098/rsta.1995.0038 2024-05-07T14:16:49Z Flux gradient, eddy covariance and relaxed eddy accumulation methods were applied to measure CH 4 and N 2 O emissions from peatlands and arable land respectively. Measurements of N 2 O emission by eddy covariance using tunable diode laser spectroscopy provided fluxes ranging from 2 to 60 µ mol N 2 O m -2 h -1 with a mean value of 22 µ mol N 2 O m -2 h -1 from 320 h of continuous measurements. Fluxes of CH 4 measured above peatland in Caithness (U.K.) during May and June 1993 by eddy covariance and relaxed eddy accumulation methods were in the range 70 to 120 µ mol CH 4 m -2 h -1 with means of 14.7 µ mol CH 4 m -2 h -1 and 22.7 µ mol CH 4 m -2 h -1 respectively. Emissions of CH 4 from peatland changed with water table depth and soil temperature; increasing from 25 |Amol CH 4 m -2 h -1 at 5% pool area to 50 p.mol CH 4 m -2 h -1 with 30% within the flux footprint occupied by pools. A temperature response of 4.9 (xmol CH 4 m -2 h -1 °C -1 in the range 6-12 °C was also observed. The close similarity in average CH 4 emission fluxes reported for wetlands in Caithness, Hudson Bay and Alaska in the range 11 to 40 jamol CH 4 m -2 h -1 suggests that earlier estimates of CH 4 emission from high latitude wetlands were too large or that the area of high latitudes contributing to CH 4 emission has been seriously underestimated. Article in Journal/Newspaper Hudson Bay Alaska The Royal Society Hudson Hudson Bay Philosophical Transactions of the Royal Society of London. Series A: Physical and Engineering Sciences 351 1696 339 356 |
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Open Polar |
collection |
The Royal Society |
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crroyalsociety |
language |
English |
description |
Flux gradient, eddy covariance and relaxed eddy accumulation methods were applied to measure CH 4 and N 2 O emissions from peatlands and arable land respectively. Measurements of N 2 O emission by eddy covariance using tunable diode laser spectroscopy provided fluxes ranging from 2 to 60 µ mol N 2 O m -2 h -1 with a mean value of 22 µ mol N 2 O m -2 h -1 from 320 h of continuous measurements. Fluxes of CH 4 measured above peatland in Caithness (U.K.) during May and June 1993 by eddy covariance and relaxed eddy accumulation methods were in the range 70 to 120 µ mol CH 4 m -2 h -1 with means of 14.7 µ mol CH 4 m -2 h -1 and 22.7 µ mol CH 4 m -2 h -1 respectively. Emissions of CH 4 from peatland changed with water table depth and soil temperature; increasing from 25 |Amol CH 4 m -2 h -1 at 5% pool area to 50 p.mol CH 4 m -2 h -1 with 30% within the flux footprint occupied by pools. A temperature response of 4.9 (xmol CH 4 m -2 h -1 °C -1 in the range 6-12 °C was also observed. The close similarity in average CH 4 emission fluxes reported for wetlands in Caithness, Hudson Bay and Alaska in the range 11 to 40 jamol CH 4 m -2 h -1 suggests that earlier estimates of CH 4 emission from high latitude wetlands were too large or that the area of high latitudes contributing to CH 4 emission has been seriously underestimated. |
format |
Article in Journal/Newspaper |
title |
Measurements of CH 4 and N 2 O fluxes at the landscape scale using micrometeorological methods |
spellingShingle |
Measurements of CH 4 and N 2 O fluxes at the landscape scale using micrometeorological methods |
title_short |
Measurements of CH 4 and N 2 O fluxes at the landscape scale using micrometeorological methods |
title_full |
Measurements of CH 4 and N 2 O fluxes at the landscape scale using micrometeorological methods |
title_fullStr |
Measurements of CH 4 and N 2 O fluxes at the landscape scale using micrometeorological methods |
title_full_unstemmed |
Measurements of CH 4 and N 2 O fluxes at the landscape scale using micrometeorological methods |
title_sort |
measurements of ch 4 and n 2 o fluxes at the landscape scale using micrometeorological methods |
publisher |
The Royal Society |
publishDate |
1995 |
url |
http://dx.doi.org/10.1098/rsta.1995.0038 https://royalsocietypublishing.org/doi/pdf/10.1098/rsta.1995.0038 |
geographic |
Hudson Hudson Bay |
geographic_facet |
Hudson Hudson Bay |
genre |
Hudson Bay Alaska |
genre_facet |
Hudson Bay Alaska |
op_source |
Philosophical Transactions of the Royal Society of London. Series A: Physical and Engineering Sciences volume 351, issue 1696, page 339-356 ISSN 0962-8428 2054-0299 |
op_rights |
https://royalsociety.org/journals/ethics-policies/data-sharing-mining/ |
op_doi |
https://doi.org/10.1098/rsta.1995.0038 |
container_title |
Philosophical Transactions of the Royal Society of London. Series A: Physical and Engineering Sciences |
container_volume |
351 |
container_issue |
1696 |
container_start_page |
339 |
op_container_end_page |
356 |
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1800753032961458176 |