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. ORCID: https://orcid.org/0000-0002-4152-1190, Waterhouse, A. and Wills, D. (2015) Determination of the absolute accuracy of UK chamber facilities used in measuring methane emissions from livestock. Measurement, 66. pp. 272-279. ISSN 0263-2241 doi: 10.1016/j.measurement.2015.02.029

Abstract/Summary

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 metrological traceability to international standards, assesses the impact of both analyser 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 combined 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) when the validation results are applied to the facilities’ data.

Item Type	Article
URI	https://reading-clone.eprints-hosting.org/id/eprint/39634
Identification Number/DOI	10.1016/j.measurement.2015.02.029
Refereed	Yes
Divisions	Life Sciences > School of Agriculture, Policy and Development > Department of Animal Sciences > Animal, Dairy and Food Chain Sciences (ADFCS)- DO NOT USE
Uncontrolled Keywords	Respiration chambers Methane emissions Livestock emissions Calibration Traceability
Publisher	Elsevier
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