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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.

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Authors

T.D. Gardiner

M.D. Coleman

F. Innocenti

J. Tompkins

A. Connor

P.C. Garnsworthy

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.

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

Journal Article Type Article
Acceptance Date Feb 9, 2015
Online Publication Date Feb 18, 2015
Publication Date Apr 1, 2015
Deposit Date Sep 15, 2017
Publicly Available Date Mar 29, 2024
Journal Measurement
Print ISSN 1536-6367
Electronic ISSN 0263-2241
Publisher Routledge
Peer Reviewed Peer Reviewed
Volume 66
DOI https://doi.org/10.1016/j.measurement.2015.02.029
Keywords Respiration chambers, methane emissions, livestock emissions, calibration, traceability
Public URL https://nottingham-repository.worktribe.com/output/745749
Publisher URL http://www.sciencedirect.com/science/article/pii/S0263224115000871?via%3Dihub

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