Perspectives on peak liquid manure temperature with implications for methane emissions

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DOI

https://10.1002/jeq2.20483

Langue de publication
Anglais
Date
2023-04-26
Type
Article
Auteur(s)
  • Hung, Chih-Yu
  • Koc, Efe Kamal
  • Grant, Brian
  • Smith, Ward
  • Vander Zaag, Andrew
Éditeur
American Society of Agronomy, Crop Science Society of America, Soil Science Society of America / Wiley Periodicals LLC

Résumé

Methane emissions from liquid manure storage are currently estimated with a methane conversion factor (MCF) based on manure temperature inputs or air temperatures as a substitute in the 2019 IPCC Tier 2 method. However, differences between peak manure temperature and peak air temperature (Tdiff) in warm seasons are likely to occur and result in poor estimates of MCF and methane emissions. To address this concern, this study aims to investigate the relationship between the Tdiff and ratio of manure surface area to manure volume (Rs:v) using a mechanistic model and by analyzing farm-scale measurement studies across Canada. Positive correlations between Tdiff and Rs:v were found using a modeling approach and from farm-scale results (r = 0.55, p = 0.06). Tdiff ranged from –2.2 to 2.6°C in farm-scale results mainly collected from eastern Canada. We suggest that manure volume and surface area, in addition to removal frequency, could be used to estimate Tdiff and be part of the criteria for improving manure temperature estimates, which could lead to improved estimates of MCF.

Sujet

  • Agriculture

Mots-clés

  • manure,
  • methane emission

Droits

Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0)

Pagination

939-947

Évalué par les pairs

Yes

Identifiants

ISSN
1537-2537
0047-2425

Article

Titre de la revue
Journal of Environmental Quality
Volume de la revue
52
Date d'acceptation
2023-04-13
Date de soumission
2022-11-08

Référence(s)

Hung, C-Y., Koc, E. K., Grant, B., Smith, W., & Vander Zaag, A. (2023). Perspectives on peak liquid manure temperature with implications for methane emissions. Journal of Environmental Quality, 52, 939-947. https://10.1002/jeq2.20483

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Collection(s)

Climate and weather

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