Estimating the size of a methane emission point source at different scales: from local to landscape
High methane (CH<sub>4</sub>) mixing ratios (up to 4 ppm) have occurred sporadically at our measurement site in Haddenham, Cambridgeshire, since July 2012. Isotopic measurements and back trajectories show that the source is the Waterbeach Waste Management Park 7 km SE of Haddenham. To...
| Main Authors: | , , , , , , , , , , |
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| Format: | Article |
| Language: | English |
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Copernicus Publications
2017-06-01
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| Series: | Atmospheric Chemistry and Physics |
| Online Access: | https://www.atmos-chem-phys.net/17/7839/2017/acp-17-7839-2017.pdf |
| _version_ | 1818904226182463488 |
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| author | S. N. Riddick S. N. Riddick S. Connors A. D. Robinson A. J. Manning P. S. D. Jones D. Lowry E. Nisbet R. L. Skelton G. Allen J. Pitt N. R. P. Harris |
| author_facet | S. N. Riddick S. N. Riddick S. Connors A. D. Robinson A. J. Manning P. S. D. Jones D. Lowry E. Nisbet R. L. Skelton G. Allen J. Pitt N. R. P. Harris |
| author_sort | S. N. Riddick |
| collection | DOAJ |
| description | High methane (CH<sub>4</sub>) mixing ratios (up to 4 ppm) have
occurred sporadically at our measurement site in Haddenham, Cambridgeshire,
since July 2012. Isotopic measurements and back trajectories show that the
source is the Waterbeach Waste Management Park 7 km SE of Haddenham. To
investigate this further, measurements were made on 30 June and 1 July 2015
at other locations nearer to the source. Landfill emissions have been
estimated using three different approaches at different scales; near source
using the WindTrax inversion dispersion model, middle distance using a
Gaussian plume (GP) model and at the landscape scale using the Numerical
Atmospheric Modelling Environment (NAME) Inversion Technique for Emission
Modelling (InTEM) inversion. The emission
estimates derived using the WindTrax and Gaussian plume (GP) approaches agree
well for the period of intense observations. Applying the Gaussian plume
approach to all periods of elevated measurements seen at Haddenham produces
year-round and monthly landfill emission estimates with an estimated annual
emission of 11.6 Gg CH<sub>4</sub> yr<sup>−1</sup>. The monthly emission estimates are
highest in winter (2160 kg h<sup>−1</sup> in February) and lowest in summer
(620 kg h<sup>−1</sup> in July). These data identify the effects of environmental
conditions on landfill CH<sub>4</sub> production and highlight the importance of
year-round measurements to capture seasonal variability in CH<sub>4</sub> emission. |
| first_indexed | 2024-12-19T21:04:04Z |
| format | Article |
| id | doaj.art-803abc4fe2a54b07bc1171dd274e0ccf |
| institution | Directory Open Access Journal |
| issn | 1680-7316 1680-7324 |
| language | English |
| last_indexed | 2024-12-19T21:04:04Z |
| publishDate | 2017-06-01 |
| publisher | Copernicus Publications |
| record_format | Article |
| series | Atmospheric Chemistry and Physics |
| spelling | doaj.art-803abc4fe2a54b07bc1171dd274e0ccf2022-12-21T20:05:43ZengCopernicus PublicationsAtmospheric Chemistry and Physics1680-73161680-73242017-06-01177839785110.5194/acp-17-7839-2017Estimating the size of a methane emission point source at different scales: from local to landscapeS. N. Riddick0S. N. Riddick1S. Connors2A. D. Robinson3A. J. Manning4P. S. D. Jones5D. Lowry6E. Nisbet7R. L. Skelton8G. Allen9J. Pitt10N. R. P. Harris11Centre for Atmospheric Science, University of Cambridge, Cambridge CB2 1EZ, UKnow at: Department of Civil and Environmental Engineering, Princeton University, Princeton, 08544, USACentre for Atmospheric Science, University of Cambridge, Cambridge CB2 1EZ, UKCentre for Atmospheric Science, University of Cambridge, Cambridge CB2 1EZ, UKMet Office, Exeter EX1 3PB, UKCentre for Atmospheric Science, University of Cambridge, Cambridge CB2 1EZ, UKDepartment of Earth Sciences, Royal Holloway, University of London, Egham TW20 0EX, UKDepartment of Earth Sciences, Royal Holloway, University of London, Egham TW20 0EX, UKDepartment of Chemical Engineering, University of Cambridge, Cambridge CB2 3RA, UKCentre for Atmospheric Science, University of Manchester, Manchester M13 9PL, UKCentre for Atmospheric Science, University of Manchester, Manchester M13 9PL, UKCentre for Atmospheric Informatics and Emissions Technology, Cranfield University, Cranfield MK43 0AL, UKHigh methane (CH<sub>4</sub>) mixing ratios (up to 4 ppm) have occurred sporadically at our measurement site in Haddenham, Cambridgeshire, since July 2012. Isotopic measurements and back trajectories show that the source is the Waterbeach Waste Management Park 7 km SE of Haddenham. To investigate this further, measurements were made on 30 June and 1 July 2015 at other locations nearer to the source. Landfill emissions have been estimated using three different approaches at different scales; near source using the WindTrax inversion dispersion model, middle distance using a Gaussian plume (GP) model and at the landscape scale using the Numerical Atmospheric Modelling Environment (NAME) Inversion Technique for Emission Modelling (InTEM) inversion. The emission estimates derived using the WindTrax and Gaussian plume (GP) approaches agree well for the period of intense observations. Applying the Gaussian plume approach to all periods of elevated measurements seen at Haddenham produces year-round and monthly landfill emission estimates with an estimated annual emission of 11.6 Gg CH<sub>4</sub> yr<sup>−1</sup>. The monthly emission estimates are highest in winter (2160 kg h<sup>−1</sup> in February) and lowest in summer (620 kg h<sup>−1</sup> in July). These data identify the effects of environmental conditions on landfill CH<sub>4</sub> production and highlight the importance of year-round measurements to capture seasonal variability in CH<sub>4</sub> emission.https://www.atmos-chem-phys.net/17/7839/2017/acp-17-7839-2017.pdf |
| spellingShingle | S. N. Riddick S. N. Riddick S. Connors A. D. Robinson A. J. Manning P. S. D. Jones D. Lowry E. Nisbet R. L. Skelton G. Allen J. Pitt N. R. P. Harris Estimating the size of a methane emission point source at different scales: from local to landscape Atmospheric Chemistry and Physics |
| title | Estimating the size of a methane emission point source at different scales: from local to landscape |
| title_full | Estimating the size of a methane emission point source at different scales: from local to landscape |
| title_fullStr | Estimating the size of a methane emission point source at different scales: from local to landscape |
| title_full_unstemmed | Estimating the size of a methane emission point source at different scales: from local to landscape |
| title_short | Estimating the size of a methane emission point source at different scales: from local to landscape |
| title_sort | estimating the size of a methane emission point source at different scales from local to landscape |
| url | https://www.atmos-chem-phys.net/17/7839/2017/acp-17-7839-2017.pdf |
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