Long term observations of biomass burning aerosol over Warsaw by means of multiwavelength lidar

Janicka, Łucja; Davulienė, Lina; Byčenkienė, Steigvilė; Stachlewska, Iwona S.

doi:10.1364/oe.496794

Cited by 5 publications

(3 citation statements)

References 84 publications

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“…6(e)). The only possible explanation of such a combination of characteristics is the presence of aged polluted urban and BB aerosols over the region of Sofia (Eck et al, 2003;Müller et al, 2007;Ortiz-Amezcua et al, 2017;Noh et al, 2017;Ansmann et al, 2021;Janicka et al, 2023). Indeed, in this case there are no established 120-hour HYSPLIT back trajectories of arriving air masses that have passed over Africa.…”

Section: Resultsmentioning

confidence: 99%

Identification of Saharan-Dust Intrusions over Sofia, Bulgaria, Using Near-Ground PM10 and PM2.5 Mass Concentration Measurements

Evgenieva,

Vakareeva,

Gurdev

et al. 2024

Aerosol Air Qual. Res.

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Intrusions of Saharan dust (SD) in the atmosphere over Sofia City, Bulgaria, are not a rare phenomenon. Since it can significantly affect the Earth's radiative balance, various atmospheric processes, the climate and the living conditions on the land and in the ocean, as well as the air quality, it has been the subject of large-scale studies of considerable societal and scientific interest. In the present work, results were analyzed of: concurrent measurements of near-ground aerosol PM10 and PM2.5 mass concentrations and the aerosol's optical and microphysical characteristics as obtained by an AERONET Cimel CE318-TS9 sun/sky/lunar photometer, the MONARCH Saharan-dust forecasting model and the HYSPLIT air-mass back-trajectory-recovering model. Data on the weather conditions in Sofia Valley and the fires in Bulgaria and neighboring countries were also considered. It was shown that the strong increases in the daily-mean PM10 mass concentration (> 50 µg m -3 or > 70 µg m -3 ) measured by a mountain ecological station are most frequently (74% and 86% of the cases, respectively) indications of relatively intense SD passages over the station. It was shown as well that during very intense Saharan dust intrusions over the region of Sofia (with dust load > 0.15-0.20 g m -2 ), the urban PM10 and PM2.5 mass concentrations noticeably increased, while the PM2.5/PM10 mass concentration ratio dropped down as a rule to values around 0.2 and below. The peculiarities found in the behavior of the particulate PM10 and PM2.5 mass concentrations contact-measured near the ground would allow one to recognize or confirm intense SD transport over Sofia and Sofia Valley.

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Section: Resultsmentioning

confidence: 99%

Identification of Saharan-Dust Intrusions over Sofia, Bulgaria, Using Near-Ground PM10 and PM2.5 Mass Concentration Measurements

Evgenieva,

Vakareeva,

Gurdev

et al. 2024

Aerosol Air Qual. Res.

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show abstract

“…Moreover, in a recent study of Ref. [56] related to long-term lidar observations of biomass burning aerosol over Warsaw, the EAE values range from −0.8 to 2.8, depending on the air mass origin, the lowest values corresponding to aged smoke particles. In the same study, the BAE values range from 1 to 2.7.…”

Section: Resultsmentioning

confidence: 99%

Lidar Optical and Microphysical Characterization of Tropospheric and Stratospheric Fire Smoke Layers Due to Canadian Wildfires Passing over Naples (Italy)

Damiano,

Amoruso,

Sannino

et al. 2024

Remote Sensing

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In the summer of 2017, huge wildfires in the British Columbia region (Canada) led to the injection of a remarkably high concentration of biomass burning aerosol in the atmosphere. These aerosol masses reached the city of Naples, Italy, at the end of August 2017, where they were characterized by means of a multiwavelength lidar and a sun–sky–lunar photometer. Here we report on the optical and microphysical properties of this aerosol in an intriguing condition, occurring on 4 September 2017, which is characterized by an interesting multi-layered vertical distribution of the aerosol. The Lidar profiles highlighted the presence of four aerosol layers, with two located in the lower troposphere and the other two at stratospheric altitudes. A rather thorough characterization of the biomass burning aerosol was carried out. The aerosol depolarization ratio showed an increasing dependence on the altitude with averaged values of 2–4% for the tropospheric layers, which are indicative of almost spherical smoke particles, and larger values in the stratospheric layers, suggestive of aspheric particles. Lidar-derived size distributions were retrieved for the first three aerosol layers, highlighting a higher particle concentration in the fine-mode fraction for the layers observed at higher altitudes. A dominance of fine particles in the atmosphere (fine-mode fraction > 0.8) with low absorption properties (absorption AOD < 0.0025 and SSA > 0.97) was also observed over the whole atmospheric column by sun photometer data. The space-resolved results provided by the lidar data are consistent with the columnar features retrieved by the AERONET sun photometer, thus evidencing the reliability and capability of lidar characterization of atmospheric aerosol in a very interesting condition of multiple aerosol layers originating from Canadian fires overpassing the observation station.

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“…Moreover, in a recent study of Ref. [52] related to long term lidar observations of biomass burning aerosol over Warsaw, the EAE values range from -0.8 to 2.8, depending on the air masses origin, the lowest values corresponding to aged smoke particles. In the same study, the BAE values range from 1 to 2.7.…”

mentioning

confidence: 99%

Lidar Optical and Microphysical Characterization of Tropospheric and Stratospheric Fire Smoke Layers Due to Canadian Wildfires Passing over Naples (Italy)

Damiano,

Amoruso,

Sannino

et al. 2023

Preprint

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In Summer 2017, huge wildfires in the British Columbia region (Canada) led to the injection of a remarkably high concentration of biomass burning aerosol in the atmosphere. These aerosol masses reached the city of Naples, Italy, since the end of August 2017, where they were characterized by means of a multiwavelength lidar and a sun-sky-lunar photometer. Here we report on the optical and microphysical properties of this aerosol in an intriguing condition, occurring on 4th September 2017, which is characterized by an interesting multi-layered vertical distribution of the aerosol. The Lidar profiles highlighted the presence of four aerosol layers, with two located in the lower troposphere and other two at stratospheric altitudes. A rather thorough characterization of the biomass burning aerosol was carried out. The aerosol depolarization ratio showed an increasing dependence on the altitude with averaged values of 2-4% for the tropospheric layers, which are indicative of almost spherical smoke particles, and larger values in the stratospheric layers, suggestive of aspheric particles. Lidar-derived size distributions were retrieved for the first three aerosol layers, highlighting a higher particle concentration in the fine mode fraction for the layers observed at higher altitude. A dominance of fine particles in the atmosphere (Fine Mode Fraction &gt; 0.8) with low absorption properties (absorption AOD &lt; 0.0025 and SSA &gt; 0.97) was also observed over the whole atmospheric column by sun-photometer data. The space-resolved results provided by the lidar data are consistent with the columnar features retrieved by the AERONET sun-photometer, thus evidencing the reliability and capability of lidar characterization of atmospheric aerosol in a very interesting condition of multiple aerosol layers originating from Canadian fires overpassing the observation station.

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Long term observations of biomass burning aerosol over Warsaw by means of multiwavelength lidar

Cited by 5 publications

References 84 publications

Identification of Saharan-Dust Intrusions over Sofia, Bulgaria, Using Near-Ground PM10 and PM2.5 Mass Concentration Measurements

Identification of Saharan-Dust Intrusions over Sofia, Bulgaria, Using Near-Ground PM10 and PM2.5 Mass Concentration Measurements

Lidar Optical and Microphysical Characterization of Tropospheric and Stratospheric Fire Smoke Layers Due to Canadian Wildfires Passing over Naples (Italy)

Lidar Optical and Microphysical Characterization of Tropospheric and Stratospheric Fire Smoke Layers Due to Canadian Wildfires Passing over Naples (Italy)

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