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Developments in micrometeorological methods for methane measurements

Published online by Cambridge University Press:  06 June 2013

S. M. McGinn
S. M. McGinn*
Affiliation:
Agriculture and Agri-Food Canada, 5403 – 1 Avenue South, PO Box 3000, Lethbridge, Alberta, Canada T1J 4B1
*
†E-mail: sean.mcginn@agr.gc.ca
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Abstract

Micrometeorological techniques can be applied to estimate methane (CH4) emissions from ruminants and livestock manure using CH4 concentration measured within the internal surface boundary layer. The main advantage of these techniques is that they are non-intrusive, thereby eliminating the impact of the measurement set-up on the calculated CH4 emission. This review focuses on four micrometeorological techniques, namely, the integrated horizontal flux (IHF), flux gradient (FG), eddy covariance (EC) and the dispersion modelling using the backward Lagrangian stochastic method (BLS). Each technique has unique advantages and limitations when used for estimating enteric (ruminant) and manure CH4 emissions. The IHF technique may be theoretically simpler then the FG, EC or BLS techniques, but all require high-resolution instruments to measure concentration. The EC and BLS techniques also require a measurement of the wind statistics. This review discusses the appropriate use of these four micrometeorological techniques for estimating CH4 emissions in animal agriculture and the recent advances in measurement technology.

Keywords

methanemicrometeorologytechniquelivestockmanure
Type
Full Paper
Information
animal , Volume 7 , Issue s2: Greenhouse Gases & Animal Agriculture Conference (GGAA 2013), 23rd ‐ 26th June 2013, Dublin, Ireland , June 2013 , pp. 386 - 393
Copyright
Copyright © Her Majesty the Queen in Right of Canada, as represented by the Minister of Agriculture and Agri-Food Canada 2013 

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