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Article Dans Une Revue Atmospheric Measurement Techniques Année : 2023

Quantifying particulate matter optical properties and flow rate in industrial stack plumes from PRISMA hyperspectral imager

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Abstract. Industrial activities such as metallurgy, coal and oil combustion, cement production and petrochemistry release aerosol particles into the atmosphere. We propose to analyze the aerosol composition of plumes emitted by different industrial stacks using PRISMA (PRecursore IperSpettrale della Missione Applicativa) satellite hyperspectral observations. Three industrial sites have been observed: a coal-fired power plant in Matla, South Africa (imaged on September 25, 2021), a steel plant in Wuhan, China (March 24, 2021), and gas flaring at an oil extraction site in Hassi Messaoud, Algeria (July 9, 2021). Below-plume surface reflectances are constrained using a combination of PRISMA and Sentinel-2/MSI images. The radiative transfer simulations are performed for each scene including the surface, background atmosphere, and plume optical properties. The plume aerosol optical thickness (AOT), particle radius, volume of coarse mode aerosol and soot are then retrieved within the plumes following an optimal estimation framework. The mean plume retrieved AOT at 500 nm ranges between 0.27 and 1.27 and the median radius between 0.10 μm and 0.12 μm. We found a volume fraction of soot of 3.6 % and 10.4 % in the sinter plant and coal-fired plant plumes, respectively. The mass flow rate of particulate matter at point source estimated by an integrated mass enhancement method varies from 511 g s-1 for the flaring emission to 1401 g s-1 at the coal-fired plant.
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hal-04297497 , version 1 (04-04-2024)

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Gabriel Calassou, Pierre-Yves Foucher, Jean-Francois Leon. Quantifying particulate matter optical properties and flow rate in industrial stack plumes from PRISMA hyperspectral imager. Atmospheric Measurement Techniques, 2023, ⟨10.5194/amt-2023-178⟩. ⟨hal-04297497⟩
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