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

TD Gardiner*, MD Coleman, F Innocenti, J Tompkins, A Connor, PC Garnsworthy, JM Moorby, CK Reynolds, A Waterhouse, D Wills

*Corresponding author for this work

Research output: Contribution to journalArticle

27 Citations (Scopus)
6 Downloads (Pure)

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 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.
Original languageEnglish
Pages (from-to)272 - 279
Number of pages8
JournalMeasurement
Volume66
DOIs
Publication statusPrint publication - 2015

Bibliographical note

2047067
1023327

Keywords

  • Calibration
  • Livestock emissions
  • Methane emissions
  • Respiration chambers
  • Traceability

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    Gardiner, TD., Coleman, MD., Innocenti, F., Tompkins, J., Connor, A., Garnsworthy, PC., Moorby, JM., Reynolds, CK., Waterhouse, A., & Wills, D. (2015). Determination of the absolute accuracy of UK chamber facilities used in measuring methane emissions from livestock. Measurement, 66, 272 - 279. https://doi.org/10.1016/j.measurement.2015.02.029