Fecha/hora: 16/06/2024 03:54:03

Biblioteca(s): 	INIA Treinta y Tres.	
Fecha corriente: 	10/08/2021	
Fecha de la última actualización: 	10/08/2021	
Autoria: 	BAI, M.; VELAZCO, J.I.; COATES, T. W.; PHILLIPS, F. A.; FLESCH, T. K.; HILL, J.; MAYER, D. G.; TOMKINS, N.W.; HEGARTY, R. S.; CHEN, D.	
Afiliación: 	MEI BAI, Faculty of Veterinary and Agricultural Science, the University of Melbourne, Australia; JOSÉ I. VELAZCO, Faculty of Environmental and Rural Science, University of New England, Australia; TREVOR W. COATES, Faculty of Veterinary and Agricultural Science, the University of Melbourne, Australia; FRANCES A. PHILLIPS, Centre for Atmospheric Chemistry, University of Wollongong, Australia; THOMAS K. FLESCH, Department of Earth and Atmospheric Sciences, University of Alberta, Canada; JULIAN HILL, Ternes Agricultural Consulting, Australia; DAVID G. MAYER, Agri-Science Queensland, Australia; NIGEL W. TOMKINS, CSIRO Agriculture, Australian Tropical Science and Innovation Precinct, James Cook University, Australia; ROGER S. HEGARTY, School of Environmental and Rural Science, University of New England, Australia; DELI CHEN, Faculty of Veterinary and Agriculture Sciences, the Univesity of Melbourne, Australia.	
Título: 	Beef cattle methane emissions measured with tracer-ratio and inverse dispersion modelling techniques.	
Año de publicación: 	2021	
Fuente/Imprenta: 	Atmospheric Measurement Techniques, May 2021,volume 14, Issue 5, pages 3469 - 3479. OPEN ACCESS. Doi: https://doi.org/10.5194/amt-14-3469-2021	
ISSN: 	1867-8548	
DOI: 	10.5194/amt-14-3469-2021	
Idioma: 	Inglés	
Notas: 	Article history: Received: 8 November 2020 // Discussion started: 25 November 2020 //Revised: 18 March 2021 // Accepted: 6 April 2021 // Published: 12 May 2021.
Corresponding Author: Mei Bai (mei.bai@unimelb.edu.au)	
Contenido: 	The development and validation of management practices to mitigate greenhouse gas (GHG) emissions from livestock require accurate emission measurements. This study assessed the accuracy of a practical inverse dispersion modelling (IDM) technique to quantify methane (CH4) emitted from a small cattle herd (16 animals) confined to a 63&#8201;m&#8201;×&#8201;60&#8201;m experimental pen. The IDM technique calculates emissions from the increase in the CH4 concentration measured downwind of the animals. The measurements were conducted for 7&#8201;d. Two types of open-path (OP) gas sensors were used to measure concentration in the IDM calculation: a Fourier transform infrared spectrometer (IDM-FTIR) or a CH4 laser (IDM-Laser). The actual cattle emission rate was measured with a tracer-ratio technique using nitrous oxide (N2O) as the tracer gas. We found very good agreement between the two IDM emission estimates (308.1&#8201;±&#8201;2.1 ? mean&#8201;±&#8201;SE ? and 304.4&#8201;±&#8201;8.0&#8201;g&#8201;CH4 head&#8722;1&#8201;d&#8722;1 for the IDM-FTIR and IDM-Laser respectively) and the tracer-ratio measurements (301.9&#8201;±&#8201;1.5&#8201;g&#8201;CH4 head&#8722;1&#8201;d&#8722;1). This study suggests that a practical IDM measurement approach can provide an accurate method of estimating cattle emissions.	
Palabras-Clave: 	AGRICULTURE; AGRICULTURE AND ENVIRONMENT; ANIMAL CULTURE; ANIMAL NUTRITION; CATTLE; FEEDS AND FEEDING; HOUSING AND ENVIRONMENTAL CONTROL; RANGE MANAGEMENT; RANGELANDS.	
Thesaurus NAL: 	AGRICULTURE.	
Categoría del tema: 	L01 Ganadería	
URL: 	http://www.ainfo.inia.uy/digital/bitstream/item/15925/1/amt-14-3469-2021.pdf
https://amt.copernicus.org/articles/14/3469/2021/	
Registro original: 	INIA Treinta y Tres (TT)	
Ejemplares: 	TT - (103314-1) - PXI - AP - DD - Atmospheric Measurement Techniques/2021/ -  -  - DIS