Maasakkers et al. (2022): Using satellites to uncover large methane emissions from landfills, Science Advances

This study examines the possibility of using satellites to detect large landfill methane emission hot spots and locate facilities responsible for the emission. The global surveying Tropospheric Monitoring Instrument (TROPOMI), on board the 2017-launched Copernicus Sentinel-5 Precursor satellite, was used to detect large landfill methane emitters in Buenos Aires, Delhi, Lahore, and Mumbai. 

Riddick et al. (2022): A cautionary report of calculating methane emissions using low-cost fence-line sensors, Elementa: Science of the Anthropocene

This study shows positive results in using low-cost fence-line sensors to detect methane leak and conduct community monitoring, though the effectiveness of the method might be constrained when potential emission sources are not determined.

Gålfalk et al. (2021): Sensitive Drone Mapping of Methane Emissions without the Need for Supplementary Ground-Based Measurements, ACS Earth and Space Chemistry

This research demonstrates the viability of using the newly-developed drone-based methane detection system to calculate emissions and locate emission hotspots without the use of ground-based instruments. 

Allen et al. (2019): The development and trial of an unmanned aerial system for the measurement of methane flux from landfill and greenhouse gas emission hotspots, Waste Management

This paper presents a case study on measuring instantaneous methane fluxes from the test landfill site in Northern England with UAS-based measurements and a mass balance model tailored for the sampling. 

Jeong et al. (2019): Innovation of flux chamber network design for surface methane emission from landfills using spatial interpolation models, Science of the Total Environment

This study improves the design of flux chamber measurement networks by examining several deterministic interpolation models and 22 flux measurement data from 10 municipal solid waste landfills in the Republic of Korea. 

Lando et al. (2017): Application of portable gas detector in point and scanning method to estimate spatial distribution of methane emission in landfill, Waste Management

This study discovers the advantages and disadvantages of point and scanning methods in methane emission detection and proposes the application of the portable gas detector (PGD) to estimate the spatial distribution and concentration of methane emission in landfills. 

Lavoie et al. (2015): Aircraft-Based Measurements of Point Source Methane Emissions in the Barnett Shale Basin, Environmental Science & Technology

This study discusses the methods and results of the aircraft-based emission measurements conducted over 5 flights on 5 landfills and gas & oil facilities in 2013 in Barnett Shale, Texas, U.S.

Mønster et al. (2015): Quantification of methane emissions from 15 Danish landfills using the mobile tracer dispersion method, Waste Management

This article illustrates a quantitative approach to calculate methane emissions of 15 landfills in Denmark using mobile tracer dispersion method with fourier transform infrared spectroscopy (FTIR), cavity ring-down spectrometry (CRDS), or by using tracer gas such as nitrous oxide and acetylene.

U.S. Environmental Protection Agency (EPA): Landfill Gas Emissions Model (LandGEM)

The U.S. EPA uses landfill gas modeling methods (now widely considered outdated) to estimate gas generation and recovery based on waste disposal history and gas collection efficiency. The LandGEM is a Microsoft Excel-based software application most widely used in the U.S. that uses first-order decay method to calculate estimates of methane and landfill gas generations.

International Panel on Climate Change (IPCC): Waste Model (2006)

The IPCC waste model is a Microsoft Excel-based software application that uses the first-order decay method (now widely considered outdated) to calculate methane emissions from solid waste disposal sites.  

U.S. Agriculture Research Service (USDA-ARS): California Landfill Methane Inventory Model (CALMIM)

CALMIM is a field-validated 1-dimensional transport and oxidation model that calculates annual site-specific landfill methane emissions based on the amount of organic matter in cover materials, modeled methane transport in cover materials, methane oxidation, and other detailed climate information. 

Reinhart et al. (1992): Flux Chamber Design and Operation for the Measurement of Municipal Solid Waste Landfill Gas Emission Rates, Waste Management

The study demonstrates the hybrid Flux Chamber-Soil Gas Probe methodology to detect methane emissions from municipal solid waste.