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DOI	10.5194/acp-20-14005-2020
	Is the near-spherical shape the "new black" for smoke?
	Gialitaki A.; Tsekeri A.; Amiridis V.; Ceolato R.; Paulien L.; Kampouri A.; Gkikas A.; Solomos S.; Marinou E.; Haarig M.; Baars H.; Ansmann A.; Lapyonok T.; Lopatin A.; Dubovik O.; Groß S.; Wirth M.; Tsichla M.; Tsikoudi I.; Balis D.
发表日期	2020
ISSN	16807316
起始页码	14005
结束页码	14021
卷号	20 期号:22
英文摘要	We examine the capability of near-sphericalshaped particles to reproduce the triple-wavelength particle linear depolarization ratio (PLDR) and lidar ratio (LR) values measured over Europe for stratospheric smoke originating from Canadian wildfires. The smoke layers were detected both in the troposphere and the stratosphere, though in the latter case the particles presented PLDR values of almost 18% at 532 nm as well as a strong spectral dependence from the UV to the near-IR wavelength. Although recent simulation studies of rather complicated smoke particle morphologies have shown that heavily coated smoke aggregates can produce large PLDR, herein we propose a much simpler model of compact near-spherical smoke particles. This assumption allows for the reproduction of the observed intensive optical properties of stratospheric smoke, as well as their spectral dependence. We further examine whether an extension of the current Aerosol Robotic Network (AERONET) scattering model to include the near-spherical shapes could be of benefit to the AERONET retrieval for stratospheric smoke cases associated with enhanced PLDR. Results of our study illustrate the fact that triple-wavelength PLDR and LR lidar measurements can provide us with additional insight when it comes to particle characterization. © 2020 Author(s).
语种	英语
scopus关键词	AERONET; black carbon; lidar; optical property; particulate matter; smoke; troposphere; wildfire; Europe
来源期刊	Atmospheric Chemistry and Physics
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/152810
作者单位	National Observatory of Athens, IAASARS, Athens, Greece; Laboratory of Atmospheric Physics, Physics Department, Aristotle University of Thessaloniki, Thessaloniki, Greece; ONERA, French Aerospace Lab, Toulouse, France; Research Centre for Atmospheric Physics and Climatology, Academy of Athens, Athens, Greece; Institute of Atmospheric Physics, German Aerospace Center (DLR), Oberpfaffenhofen, Germany; Leibniz Institute for Tropospheric Research (TROPOS), Leipzig, Germany; Laboratoire d'Optique Atmosphérique, CNRS, Université Lille, Villeneuve-d'Ascq, France; GRASP-SAS, Villeneuve-d'Ascq, France; Department of Meteorology and Climatology, School of Geology, Aristotle University of Thessaloniki, Thessaloniki, Greece; Environmental Chemical Processes Laboratory, Department of Chemistry, University of Crete, Crete, Greece; Department of Environmental Physics and Meteorology, University of Athens, Athens, Greece
推荐引用方式 GB/T 7714	Gialitaki A.,Tsekeri A.,Amiridis V.,et al. Is the near-spherical shape the "new black" for smoke?[J],2020,20(22).
APA	Gialitaki A..,Tsekeri A..,Amiridis V..,Ceolato R..,Paulien L..,...&Balis D..(2020).Is the near-spherical shape the "new black" for smoke?.Atmospheric Chemistry and Physics,20(22).
MLA	Gialitaki A.,et al."Is the near-spherical shape the "new black" for smoke?".Atmospheric Chemistry and Physics 20.22(2020).