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Characterizing atmospheric aerosols using polarimetry and shadow hiding

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Title
Characterizing atmospheric aerosols using polarimetry and shadow hiding
Author(s)
Evgenij Zubko; Zheltobryukhov, Maxim; Chornaya, Ekaterina; Shmirko, Konstantin A.; Lisitsa, Vladimir V.; Pavlov, Andrey N.; Kochergin, Anton; Kornienko, Gennady; Videen, Gorden
Publication Date
2024-01
Journal
Frontiers in Remote Sensing, v.4
Publisher
Frontiers Media S.A.
Abstract
Unpolarized sunlight is scattered by aerosols acquiring partial linear polarization. By aiming a ground-based detector vertically upward, it can record the polarimetric response of aerosols that are illuminated by the Sun. As the Sun sets, a portion of the sky is shadowed and the polarimetric response of the aerosols in the unshadowed region can be measured. This provides a means of scanning different portions of the atmospheric column with time. By comparing the measured polarimetric response with that of model agglomerated debris particles we can place constraints on the sizes and chemical composition of the aerosols in different portions of this column. We conducted a survey over 24 different epochs from April 2021 to December 2022, consisting of approximately 600 measurements of polarization of the atmosphere in twilight at the Ussuriysk Astrophysical Observatory. We found that most of the measurements correspond with water-ice particles or dust. However, on some occasions organic carbon dominated the measurements. These epochs correspond with increased fire seats in the region. Copyright © 2024 Zubko, Zheltobryukhov, Chornaya, Shmirko, Lisitsa, Pavlov, Kochergin, Kornienko and Videen.
URI
https://pr.ibs.re.kr/handle/8788114/14863
DOI
10.3389/frsen.2023.1321621
ISSN
2673-6187
Appears in Collections:
Pioneer Research Center for Climate and Earth Science(기후 및 지구과학 연구단) > Planetary Atmospheres Group(행성 대기 그룹) > 1. Journal Papers (저널논문)
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