Estimating the size of a methane emission point-source at different scales: from local to landscape

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dc.contributor.authorRiddick, Stuart N.
dc.contributor.authorConnors, Sarah
dc.contributor.authorRobinson, Andrew D.
dc.contributor.authorManning, Alistair J.
dc.contributor.authorJones, Pippa S. D.
dc.contributor.authorLowry, David
dc.contributor.authorNisbet, Euan
dc.contributor.authorSkelton, Robert L.
dc.contributor.authorAllen, Grant
dc.contributor.authorPitt, Joseph
dc.contributor.authorHarris, Neil R. P.
dc.date.accessioned2017-01-04T12:14:57Z
dc.date.available2017-01-04T12:14:57Z
dc.date.issued2016-11-22
dc.description.abstractHigh methane (CH4) 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 June 30th and July 1st 2015 at other locations nearer to the source. Landfill emissions have been estimated using three different approaches (WindTrax, Gaussian plume, and NAME InTEM inversion) applied to the measurements made close to source and at Haddenham. The emission estimates derived using the WindTrax and Gaussian plume 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. The estimated annual emissions vary between 11.6 and 13.7 Gg CH4 yr−1. The monthly emission estimates are highest in winter (2160 kg hr−1 in February) and lowest in summer (620 kg hr−1 in July). These data identify the effects of environmental conditions on landfill CH4 production and highlight the importance of year-round measurement to capture seasonal variability in CH4 emission. We suggest the landscape inverse modelling approach described in this paper is in good agreement with more labour-intensive near-source approaches and can be used to identify point-sources within an emission landscape to provide high-quality emission estimates.en_UK
dc.identifier.citationRiddick, S. N., Connors, S., Robinson, A. D., Manning, A. J., Jones, P. S. D., Lowry, D., Nisbet, E., Skelton, R. L., Allen, G., Pitt, J., and Harris, N. R. P.: Estimating the size of a methane emission point-source at different scales: from local to landscape, Atmospheric Chemistry Physics, doi:10.5194/acp-2016-963, in review, 2016.en_UK
dc.identifier.issn1680-7316
dc.identifier.urihttp://dx.doi.org/10.5194/acp-2016-963
dc.identifier.urihttp://dspace.lib.cranfield.ac.uk/handle/1826/11208
dc.language.isoenen_UK
dc.publisherCopernicus Publicationsen_UK
dc.rightsShare — copy and redistribute the material in any medium or format, Adapt — remix, transform, and build upon the material for any purpose, even commercially. The licensor cannot revoke these freedoms as long as you follow the license terms. Under the following terms: Attribution — You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use. Information: No additional restrictions — You may not apply legal terms or technological measures that legally restrict others from doing anything the license permits.
dc.titleEstimating the size of a methane emission point-source at different scales: from local to landscapeen_UK
dc.typeArticleen_UK

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