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Controlled release of methane and ammonia to validate flux estimates obtained by inverse dispersion modelling
Authors: Yolanda Maria Lemes Perschke, Jesper N?rlem Kamp, Sven Gjedde Sommer, Tavs Nyord, Anders Feilberg
Identifier: CSBE21177
Download file: https://library.csbe-scgab.ca/docs/meetings/2021/CSBE21177.pdf
Published in: CSBE-SCGAB Technical Conferences » 5th CIGR and AGM Quebec City 2021 » 4th international Symposium on Gas Emissions and Dust from Livestock (EMILI)
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Description: Agriculture contributes with 21% of the total global greenhouses gas (GHG) emissions, which make this sector the world?s second largest source. In addition, agriculture is globally the largest source of NH3 in the atmosphere. Optimized manure management and identification of the best techniques to reduce gas emissions are made difficult by the limited numbers of field measurements of emissions from full scale heaps. Therefore, there is a need for estimates of the emission from full scale heaps and documentation of emission abatement by reliable measuring techniques. Micrometeorological methods using inverse dispersive modelling (IDM) have been used to measure emissions of gases, including CH4 and NH3, from open sources. Selecting the right location of the measuring devices is critical for this approach. This work presents data from a test of the IDM method for measuring fluxes of CH4 and NH3. This is accomplished by controlled release of both gases in combination with up- and downwind measurements using cavity ring-down spectroscopy and a sonic anemometer. The aim of this study is to validate this setup for the measurements of gas emission from manure heaps, and the use of these two gases will give us an opportunity to assess potential loss of NH3 downwind from the source by deposition or gas-to-particle conversion, processes that will not occur for CH4. The implementation of this method will enable measurements of fluxes of multiple gases from stored solid manure and evaluate the effects of mitigation strategies on the emissions (i.e. the effect of covering the manure).
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Date: 2021-06-11
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Conference name: 5th CIGR International Conference and CSBE-SCGAB AGM 2021, Quebec City,QC, 11-14 May 2021.
Session name: 4th international Symposium on Gas Emissions and Dust from Livestock (EMILI) 1 - Measuring methods and Modeling
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Type: Text.Abstract
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Publication type: Presentation
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Language 1: en
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Rights: Canadian Society for Bioengineering
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DOI:
Description: Agriculture contributes with 21% of the total global greenhouses gas (GHG) emissions, which make this sector the world?s second largest source. In addition, agriculture is globally the largest source of NH3 in the atmosphere. Optimized manure management and identification of the best techniques to reduce gas emissions are made difficult by the limited numbers of field measurements of emissions from full scale heaps. Therefore, there is a need for estimates of the emission from full scale heaps and documentation of emission abatement by reliable measuring techniques. Micrometeorological methods using inverse dispersive modelling (IDM) have been used to measure emissions of gases, including CH4 and NH3, from open sources. Selecting the right location of the measuring devices is critical for this approach. This work presents data from a test of the IDM method for measuring fluxes of CH4 and NH3. This is accomplished by controlled release of both gases in combination with up- and downwind measurements using cavity ring-down spectroscopy and a sonic anemometer. The aim of this study is to validate this setup for the measurements of gas emission from manure heaps, and the use of these two gases will give us an opportunity to assess potential loss of NH3 downwind from the source by deposition or gas-to-particle conversion, processes that will not occur for CH4. The implementation of this method will enable measurements of fluxes of multiple gases from stored solid manure and evaluate the effects of mitigation strategies on the emissions (i.e. the effect of covering the manure).
Keywords:
Résumé:
Mots-clés:
Citation:
Volume:
Issue:
Pages -
Contributor:
Date: 2021-06-11
Technical field:
Conference name: 5th CIGR International Conference and CSBE-SCGAB AGM 2021, Quebec City,QC, 11-14 May 2021.
Session name: 4th international Symposium on Gas Emissions and Dust from Livestock (EMILI) 1 - Measuring methods and Modeling
Other information:
Type: Text.Abstract
Format:
Publication type: Presentation
Source:
Relation:
Coverage:
Language 1: en
Language 2:
Rights: Canadian Society for Bioengineering
Notes:
Other files:
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