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PubMed Publications| Keyword search (4,163 papers available) |  |
"Howarth E" Authored Publications:
| Title | Authors | PubMed ID | |
|---|---|---|---|
| 1 | Expanding the tracer correlation method (TCM): A performance-based framework for wider implementation in landfill methane emissions monitoring | Abichou T; Arkian F; Howarth E; Malmir T; Hossain RI; Buntov P; Dudak Y; Risk D; | 41690139 ENCS |
| Title: | Expanding the tracer correlation method (TCM): A performance-based framework for wider implementation in landfill methane emissions monitoring | ||||
| Authors: | Abichou T, Arkian F, Howarth E, Malmir T, Hossain RI, Buntov P, Dudak Y, Risk D | ||||
| Link: | https://pubmed.ncbi.nlm.nih.gov/41690139/ | ||||
| DOI: | 10.1016/j.wasman.2026.115405 | ||||
| Publication: | Waste management (New York, N.Y.) | ||||
| Keywords: | Controlled release; Emission quantification; Landfill monitoring; Methane emissions; SMAPE; Tracer correlation method; | ||||
| PMID: | 41690139 | Category: | Date Added: | 2026-02-15 | |
| Dept Affiliation: |
ENCS
1 Department of Civil & Environmental Engineering, FAMU-FSU College of Engineering, Florida State University, Tallahassee 32310, FL, USA. Electronic address: abichou@eng.famu.fsu.edu. 2 Department of Civil & Environmental Engineering, FAMU-FSU College of Engineering, Florida State University, Tallahassee 32310, FL, USA. 3 Dept. of Earth, Ocean and Atmospheric Science, Florida State University, Tallahassee 32310, FL, USA. 4 Department of Building, Civil and Environmental Engineering, Concordia University, Montreal H3G1M8, Canada. 5 Department of Earth and Environmental Sciences, St. Francis Xavier University, Antigonish B2G2W5, NS, Canada. |
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Description: |
The Tracer Correlation Method (TCM), when applied to quantify landfill methane emissions, relies on previously developed stringent quality control thresholds (R2 = 0.80 and Emission Rate Deviation (ERD) = 20 %, hereafter referred to as the Gold Standard. However, these thresholds often exclude a substantial portion of the collected data, limiting wider use of TCM. We evaluated TCM during a controlled release campaign at the Petrolia landfill (Ontario, Canada), where methane was emitted at known rates (27.1-179 kg/h), though these were not disclosed to the measurement team during testing. Emission estimates from the TCM (slope-based and area-based) were compared to the true releases using the Symmetric Mean Absolute Percentage Error (SMAPE). While transects fulfilling the Gold Standard threshold showed strong agreement with actual emissions, several non-Gold Standard transects also yielded emissions estimates within 20-30 % of the released rates. These results were used to propose an expanded classification framework introducing a Silver category (R2 = 0.60, ERD = 30 %), that retained additional valid transects under moderate conditions. These results demonstrate that TCM can provide accurate total landfill emission estimates supporting a more flexible, performance-based framework to improve its utility in landfill monitoring programs. |
