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Determination of the absolute accuracy of UK chamber facilities used in measuring methane emissions from livestock

Gardiner, T.D.; Coleman, M.D.; Innocenti, F.; Tompkins, J.; Connor, A.; Garnsworthy, P.C.; Moorby, J.M.; Reynolds, C.K.; Waterhouse, A.; Wills, D.

Authors

T.D. Gardiner

M.D. Coleman

F. Innocenti

J. Tompkins

A. Connor

J.M. Moorby

C.K. Reynolds

A. Waterhouse

D. Wills



Abstract

Respiration chambers are one of the primary sources of data on methane emissions from livestock. This paper describes the results from a coordinated set of chamber validation experiments which establishes the absolute accuracy of the methane emission rates measured by the chambers, and for the first time provides traceability to international standards, assesses the impact of both sensor and chamber response times on measurement uncertainty and establishes direct comparability between measurements made across different facilities with a wide range of chamber designs. As a result of the validation exercise the estimated absolute uncertainty associated with the overall capability across all facilities reduced from 25.7% (k=2, 95% confidence) before the validation to 2.1% (k=2, 95% confidence) afterwards.

Journal Article Type Article
Publication Date Apr 1, 2015
Journal Measurement
Print ISSN 1536-6367
Electronic ISSN 0263-2241
Publisher Taylor & Francis (Routledge)
Peer Reviewed Peer Reviewed
Volume 66
APA6 Citation Gardiner, T., Coleman, M., Innocenti, F., Tompkins, J., Connor, A., Garnsworthy, P., …Wills, D. (2015). Determination of the absolute accuracy of UK chamber facilities used in measuring methane emissions from livestock. Measurement, 66, https://doi.org/10.1016/j.measurement.2015.02.029
DOI https://doi.org/10.1016/j.measurement.2015.02.029
Keywords Respiration chambers, methane emissions, livestock emissions, calibration, traceability
Publisher URL http://www.sciencedirect.com/science/article/pii/S0263224115000871?via%3Dihub
Copyright Statement Copyright information regarding this work can be found at the following address: http://eprints.nottingh.../end_user_agreement.pdf

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Copyright Statement
Copyright information regarding this work can be found at the following address: http://eprints.nottingham.ac.uk/end_user_agreement.pdf





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