Evaluating Intergovernmental Panel on Climate Change Methods for Methane Emission Estimate From Lagoon-Based Swine Manure Management Systems

IF 1.5 Q4 ENGINEERING, ENVIRONMENTAL
Clement D. D. Sohoulande, Matias B. Vanotti, Ariel A. Szogi
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引用次数: 0

Abstract

To support national estimates of methane (CH4) emissions from manure management systems, the Intergovernmental Panel on Climate Change (IPCC) proposed guidelines that include three tiers, of which Tier 1 and Tier 2 methodologies are the most used. The choice of each methodology is often driven by data availability. The application of the IPCC Tier 1 approach uses default emission factors and requires less data compared to IPCC Tier 2, which is considered a more advanced methodology. Nevertheless, no study has addressed the implications of the methodology choice on the estimation of CH4 emissions from swine manure management systems. Subsequently, there is barely any quantitative information on the discrepancies to expect when using the IPCC Tier 1 or Tier 2 approach for estimating CH4 emissions from significant sources such as open-air swine waste treatment lagoons. Hence, this study used the IPCC Tier 1 and Tier 2 methodologies to estimate CH4 emissions from feeder-to-finish swine waste treatment lagoons across the North Carolina region. Precisely, updated IPCC guidelines were applied to farm, county, and state level data of feeder-to-finish swine farms to quantify CH4 emissions from open-air anaerobic swine waste treatment lagoons. Results show that IPCC Tier 2's estimates of CH4 emissions are higher, sustaining a discrepancy of 6.7% between the two IPCC Tiers’ methodologies. Quantitatively, the differences between the two IPCC tiers’ estimates totaled 7320 Mg CH4/year (197640 Mg CO2 equivalent/year) at the state level and were unequally distributed among counties and farms. Nevertheless, a comparative analysis highlighted a meaningful contrast between the IPCC Tiers estimation per swine head or unit animal weight and direct measurements of swine lagoons’ CH4 emissions in North Carolina. The discrepancies are likely due in large part to sources of errors in the direct measurements, suggesting the need for advanced techniques for in situ CH4 emission measurements. The study highlights the trade-off related to the emission estimation approaches, and the information reported could be useful to better understand CH4 emission inventories.

评估政府间气候变化专门委员会估算泻湖式猪粪管理系统甲烷排放量的方法
为了支持各国对粪便管理系统产生的甲烷(CH4)排放的估计,政府间气候变化专门委员会(IPCC)提出了包括三层方法的指导方针,其中一级和二级方法使用最多。每种方法的选择通常由数据可用性驱动。IPCC第1层方法的应用使用默认排放因子,与IPCC第2层方法相比需要更少的数据,这被认为是一种更先进的方法。然而,没有研究解决了方法选择对猪粪管理系统CH4排放估算的影响。随后,在使用IPCC第1级或第2级方法来估计露天猪粪处理潟湖等重要来源的甲烷排放量时,几乎没有任何关于差异的定量信息。因此,本研究使用IPCC第一级和第二级方法来估计北卡罗莱纳地区从饲料到肥育猪废物处理泻湖的CH4排放量。准确地说,更新的IPCC指南被应用于农场、县和州一级的养猪场的数据,以量化露天厌氧猪废物处理泻湖的CH4排放。结果表明,IPCC第2层对CH4排放量的估计较高,两个IPCC第2层方法之间的差异维持在6.7%。从数量上看,两级IPCC估算值在州一级的差异总计为7320 Mg CH4/年(197640 Mg CO2当量/年),且在县和农场之间分布不均。然而,一项比较分析强调了IPCC对每个猪头或单位动物体重的分级估计与北卡罗来纳州猪泻湖CH4排放的直接测量之间的有意义的对比。这些差异很可能在很大程度上是由于直接测量的误差来源造成的,这表明需要先进的技术来原位测量CH4排放。该研究强调了与排放估算方法相关的权衡,报告的信息可能有助于更好地了解CH4排放清单。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
Environmental Quality Management
Environmental Quality Management Environmental Science-Management, Monitoring, Policy and Law
CiteScore
2.20
自引率
0.00%
发文量
94
期刊介绍: Four times a year, this practical journal shows you how to improve environmental performance and exceed voluntary standards such as ISO 14000. In each issue, you"ll find in-depth articles and the most current case studies of successful environmental quality improvement efforts -- and guidance on how you can apply these goals to your organization. Written by leading industry experts and practitioners, Environmental Quality Management brings you innovative practices in Performance Measurement...Life-Cycle Assessments...Safety Management... Environmental Auditing...ISO 14000 Standards and Certification..."Green Accounting"...Environmental Communication...Sustainable Development Issues...Environmental Benchmarking...Global Environmental Law and Regulation.
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