Innovative drone-based methodology for quantifying methane emissions from landfills.

Area of Science:

• Environmental Science
• Atmospheric Chemistry
• Geoscience

Background:

• Accurate measurement of anthropogenic methane emissions is crucial for climate change mitigation and greenhouse gas inventories.
• Theoretical models often overestimate emissions, while field measurements can be costly and time-consuming.
• Landfills are significant sources of fugitive methane emissions, requiring innovative monitoring solutions.

Purpose of the Study:

• To present and validate a novel drone-based mass balance method for estimating fugitive methane emissions from landfills.
• To compare the efficiency and accuracy of the drone-based method against traditional ground-based techniques.

Main Methods:

• A novel mass balance approach was employed using a drone equipped with a methane sensor.
• Measurements were conducted at a solid waste landfill in Italy, involving rapid drone flights.
• Data processing was performed in the field, and results were compared with the flux chamber method.

Main Results:

• Drone-based measurements yielded emission rates between 320 ± 280 mg m⁻²h⁻¹ and 578 ± 385 mg m⁻²h⁻¹.
• The drone method provided methane emission values 2 to 4 times higher than the ground-based flux chamber method.
• The UAV-based approach demonstrated significant speed and efficiency in data acquisition and processing.

Conclusions:

• Drone-based methodologies show great potential for accurate and rapid methane emission measurements from landfills.
• This innovative technique offers a viable alternative to traditional methods, improving the speed and optimization of emission investigations.
• The findings support the development and implementation of advanced technologies for environmental monitoring and climate change mitigation efforts.