Retrieval of Volcanic Sulfate Aerosols Optical Parameters from AHI Radiometer Data

This paper presents a method for retrieving optical parameters from volcanic sulfate aerosols from the AHI radiometer on board the Himawari-8 satellite. The proposed method is based on optical models for various mixtures of aerosol components from volcanic clouds, including ash particles, ice crysta...

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Bibliographic Details
Published in:Advances in atmospheric sciences 2024-10, Vol.41 (10), p.1953-1968
Main Authors: Filei, Andrei, Girina, Olga, Sorokin, Aleksei
Format: Article
Language:English
Subjects:
Aerosols
Atmospheric Sciences
Brightness temperature
Composition
Crystals
Droplets
Earth and Environmental Science
Earth Sciences
Geophysics/Geodesy
Ice
Ice crystals
Infrared analysis
Meteorology
Mixtures
Optical thickness
Original Paper
Parameter estimation
Parameters
Radiometers
Satellites
Sulfate aerosols
Sulfates
Surface radiation temperature
Volcanic activity
Volcanic aerosols
Volcanic eruptions
Volcanoes
Water droplets
Water drops
Citations: Items that this one cites
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Summary:This paper presents a method for retrieving optical parameters from volcanic sulfate aerosols from the AHI radiometer on board the Himawari-8 satellite. The proposed method is based on optical models for various mixtures of aerosol components from volcanic clouds, including ash particles, ice crystals, water drops, and sulfate aerosol droplets. The application of multi-component optical models of various aerosol compositions allows for the optical thickness and mass loading of sulfate aerosol to be estimated in the sulfuric cloud formed after the Karymsky volcano eruption on 3 November 2021. A comprehensive analysis of the brightness temperatures of the sulfuric cloud in the infrared bands was performed, which revealed that the cloud was composed of a mixture of sulfate aerosol and water droplets. Using models of various aerosol compositions allows for the satellite-based estimation of optical parameters not only for sulfate aerosol but also for the whole aerosol mixture.
ISSN:0256-1530
1861-9533
DOI:10.1007/s00376-024-3105-2