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Open AccessArticle

Advection of Biomass Burning Aerosols towards the Southern Hemispheric Mid-Latitude Station of Punta Arenas as Observed with Multiwavelength Polarization Raman Lidar

1
Leibniz Institute for Tropospheric Research, 04318 Leipzig, Germany
2
School of Electronic Information, Wuhan University, Wuhan 430072, China
3
Key Laboratory of Geospace Environment and Geodesy, Ministry of Education, Wuhan 430079, China
4
Atmospheric Research Laboratory, University of Magallanes, Punta Arenas 621-0427, Chile
*
Author to whom correspondence should be addressed.
Remote Sens. 2021, 13(1), 138; https://doi.org/10.3390/rs13010138
Received: 30 November 2020 / Revised: 31 December 2020 / Accepted: 1 January 2021 / Published: 4 January 2021
(This article belongs to the Special Issue Selected Papers of the European Lidar Conference 2020)
In this paper, we present long-term observations of the multiwavelength Raman lidar PollyXT conducted in the framework of the DACAPO-PESO campaign. Regardless of the relatively clean atmosphere in the southern mid-latitude oceans region, we regularly observed events of long-range transported smoke, originating either from regional sources in South America or from Australia. Two case studies will be discussed, both identified as smoke events that occurred on 5 February 2019 and 11 March 2019. For the first case considered, the lofted smoke layer was located at an altitude between 1.0 and 4.2 km, and apart from the predominance of smoke particles, particle linear depolarization values indicated the presence of dust particles. Mean lidar ratio values at 355 and 532 nm were 49 ± 12 and 24 ± 18 sr respectively, while the mean particle linear depolarization was 7.6 ± 3.6% at 532 nm. The advection of smoke and dust particles above Punta Arenas affected significantly the available cloud condensation nuclei (CCN) and ice nucleating particles (INP) in the lower troposphere, and effectively triggered the ice crystal formation processes. Regarding the second case, the thin smoke layers were observed at altitudes 5.5–7.0, 9.0 and 11.0 km. The particle linear depolarization ratio at 532 nm increased rapidly with height, starting from 2% for the lowest two layers and increasing up to 9.5% for the highest layer, indicating the possible presence of non-spherical coated soot aggregates. INP activation was effectively facilitated. The long-term analysis of the one year of observations showed that tropospheric smoke advection over Punta Arenas occurred 16 times (lasting from 1 to 17 h), regularly distributed over the period and with high potential to influence cloud formation in the otherwise pristine environment of the region. View Full-Text
Keywords: biomass burning aerosols; tropospheric aerosol; Raman lidar; Punta Arenas; DACAPO-PESO biomass burning aerosols; tropospheric aerosol; Raman lidar; Punta Arenas; DACAPO-PESO
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MDPI and ACS Style

Floutsi, A.A.; Baars, H.; Radenz, M.; Haarig, M.; Yin, Z.; Seifert, P.; Jimenez, C.; Ansmann, A.; Engelmann, R.; Barja, B.; Zamorano, F.; Wandinger, U. Advection of Biomass Burning Aerosols towards the Southern Hemispheric Mid-Latitude Station of Punta Arenas as Observed with Multiwavelength Polarization Raman Lidar. Remote Sens. 2021, 13, 138. https://doi.org/10.3390/rs13010138

AMA Style

Floutsi AA, Baars H, Radenz M, Haarig M, Yin Z, Seifert P, Jimenez C, Ansmann A, Engelmann R, Barja B, Zamorano F, Wandinger U. Advection of Biomass Burning Aerosols towards the Southern Hemispheric Mid-Latitude Station of Punta Arenas as Observed with Multiwavelength Polarization Raman Lidar. Remote Sensing. 2021; 13(1):138. https://doi.org/10.3390/rs13010138

Chicago/Turabian Style

Floutsi, Athena A.; Baars, Holger; Radenz, Martin; Haarig, Moritz; Yin, Zhenping; Seifert, Patric; Jimenez, Cristofer; Ansmann, Albert; Engelmann, Ronny; Barja, Boris; Zamorano, Felix; Wandinger, Ulla. 2021. "Advection of Biomass Burning Aerosols towards the Southern Hemispheric Mid-Latitude Station of Punta Arenas as Observed with Multiwavelength Polarization Raman Lidar" Remote Sens. 13, no. 1: 138. https://doi.org/10.3390/rs13010138

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