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Tracing local and long-range aerosol emission areas using multi-method and multi-site analyses in central Europe.

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Title: Tracing local and long-range aerosol emission areas using multi-method and multi-site analyses in central Europe.
Authors: Arora, Shubhi1 (AUTHOR), Poulain, Laurent1 (AUTHOR), Lhotka, Radek2 (AUTHOR), Schwarz, Jaroslav2 (AUTHOR), Vodička, Petr2 (AUTHOR), Mbengue, Saliou3 (AUTHOR), Zíková, Naděžda2 (AUTHOR), Ondráček, Jakub2 (AUTHOR), Pokorná, Petra2 (AUTHOR), Ždímal, Vladimír1,2 (AUTHOR) Zdimal@icpf.cas.cz, Herrmann, Hartmut1 (AUTHOR) herrmann@tropos.de
Source: Atmospheric Environment. Feb2026, Vol. 367, pN.PAG-N.PAG. 1p.
Subject Terms: *Aerosols, *Air quality, *Carbon emissions, *Seasonal temperature variations, *Emission inventories, Interdisciplinary research, Transport theory
Geographic Terms: Central Europe, Czech Republic, Poland, Europe, Germany
Abstract: Atmospheric aerosols significantly influence air quality, climate and human health, making detailed source attribution and transport characterization essential. This study integrates multiple advanced techniques-air mass cluster analysis, Concentration Weighted Trajectory (CWT) analysis and Conditional Bivariate Probability Function (CBPF) analysis; to investigate aerosol emission sources and transport pathways at three Central European measurement stations: Melpitz (MEL, Germany), Frýdlant (FRY, Czech Republic) and Košetice (NAOK, Czech Republic). Online measurements of non-refractory submicron aerosols (NR-PM 1) using aerosol mass spectrometer, combined with equivalent black carbon (eBC) and brown carbon (BrC) data from aethalometers, enabled detailed characterization of aerosol composition and sources during winter (February–March 2021) and summer (July–August 2021) campaigns. In winter, the highest PM 1 mass concentrations were recorded at NAOK (13.2 μg/m3), followed by FRY (6.4 μg/m3) and MEL (6.3 μg/m3), with organic aerosol (OA) and nitrate as major components. Diurnal trends revealed strong nighttime enhancements, especially at NAOK, indicating residential heating influence. Cluster analysis identified eastern continental air masses as dominant contributors to elevated PM levels at all sites. CWT analysis showed significant source regions for eBC, BrC and secondary inorganic aerosols in Poland and the Czech Republic, particularly for MEL and FRY. In contrast, CBPF analysis indicated local sources as the primary contributors to high OA, eBC, and BrC levels at NAOK, especially under low wind conditions (<2 m/s), suggesting biomass burning and residential heating as key sources. During summer, PM 1 concentrations were more uniform across sites, with slightly higher values at MEL (8.6 μg/m3) compared to NAOK (7.3 μg/m3) and FRY (6.5 μg/m3). Enhanced biogenic emissions and photochemical activity led to increased organic fractions, with NAOK exhibiting the highest proportion (75 % of PM 1 mass). This study demonstrates the advantages of integrating multiple analytical techniques to distinguish between local and long-range sources, assess seasonal variability, and characterize long-range transport patterns, providing key insights for air quality management in Central Europe. [Display omitted] • Multi-site, high-time-resolution study of submicron aerosols (PM 1) at three Central European rural stations. • Integrated cluster analysis, CBPF, and CWT techniques used to distinguish local from long-range aerosol contributions. • Winter dominated by eastern continental transport, with elevated PM 1 , OA, and eBC at MEL and FRY; NAOK influenced by residential heating. • Summer characterized by more uniform PM 1 levels and biogenic SOA formation. • Findings show strong seasonal and site-specific contrasts, providing input for transboundary air quality management. [ABSTRACT FROM AUTHOR]
Copyright of Atmospheric Environment is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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  Data: Tracing local and long-range aerosol emission areas using multi-method and multi-site analyses in central Europe.
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  Data: &lt;searchLink fieldCode=&quot;JN&quot; term=&quot;%22Atmospheric+Environment%22&quot;&gt;Atmospheric Environment&lt;/searchLink&gt;. Feb2026, Vol. 367, pN.PAG-N.PAG. 1p.
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  Data: &lt;searchLink fieldCode=&quot;DE&quot; term=&quot;%22Central+Europe%22&quot;&gt;Central Europe&lt;/searchLink&gt;&lt;br /&gt;&lt;searchLink fieldCode=&quot;DE&quot; term=&quot;%22Czech+Republic%22&quot;&gt;Czech Republic&lt;/searchLink&gt;&lt;br /&gt;&lt;searchLink fieldCode=&quot;DE&quot; term=&quot;%22Poland%22&quot;&gt;Poland&lt;/searchLink&gt;&lt;br /&gt;&lt;searchLink fieldCode=&quot;DE&quot; term=&quot;%22Europe%22&quot;&gt;Europe&lt;/searchLink&gt;&lt;br /&gt;&lt;searchLink fieldCode=&quot;DE&quot; term=&quot;%22Germany%22&quot;&gt;Germany&lt;/searchLink&gt;
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  Label: Abstract
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  Data: Atmospheric aerosols significantly influence air quality, climate and human health, making detailed source attribution and transport characterization essential. This study integrates multiple advanced techniques-air mass cluster analysis, Concentration Weighted Trajectory (CWT) analysis and Conditional Bivariate Probability Function (CBPF) analysis; to investigate aerosol emission sources and transport pathways at three Central European measurement stations: Melpitz (MEL, Germany), Fr&#253;dlant (FRY, Czech Republic) and Košetice (NAOK, Czech Republic). Online measurements of non-refractory submicron aerosols (NR-PM 1) using aerosol mass spectrometer, combined with equivalent black carbon (eBC) and brown carbon (BrC) data from aethalometers, enabled detailed characterization of aerosol composition and sources during winter (February–March 2021) and summer (July–August 2021) campaigns. In winter, the highest PM 1 mass concentrations were recorded at NAOK (13.2 μg/m3), followed by FRY (6.4 μg/m3) and MEL (6.3 μg/m3), with organic aerosol (OA) and nitrate as major components. Diurnal trends revealed strong nighttime enhancements, especially at NAOK, indicating residential heating influence. Cluster analysis identified eastern continental air masses as dominant contributors to elevated PM levels at all sites. CWT analysis showed significant source regions for eBC, BrC and secondary inorganic aerosols in Poland and the Czech Republic, particularly for MEL and FRY. In contrast, CBPF analysis indicated local sources as the primary contributors to high OA, eBC, and BrC levels at NAOK, especially under low wind conditions (&lt;2 m/s), suggesting biomass burning and residential heating as key sources. During summer, PM 1 concentrations were more uniform across sites, with slightly higher values at MEL (8.6 μg/m3) compared to NAOK (7.3 μg/m3) and FRY (6.5 μg/m3). Enhanced biogenic emissions and photochemical activity led to increased organic fractions, with NAOK exhibiting the highest proportion (75 % of PM 1 mass). This study demonstrates the advantages of integrating multiple analytical techniques to distinguish between local and long-range sources, assess seasonal variability, and characterize long-range transport patterns, providing key insights for air quality management in Central Europe. [Display omitted] • Multi-site, high-time-resolution study of submicron aerosols (PM 1) at three Central European rural stations. • Integrated cluster analysis, CBPF, and CWT techniques used to distinguish local from long-range aerosol contributions. • Winter dominated by eastern continental transport, with elevated PM 1 , OA, and eBC at MEL and FRY; NAOK influenced by residential heating. • Summer characterized by more uniform PM 1 levels and biogenic SOA formation. • Findings show strong seasonal and site-specific contrasts, providing input for transboundary air quality management. [ABSTRACT FROM AUTHOR]
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  Data: &lt;i&gt;Copyright of Atmospheric Environment is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites without the copyright holder&#39;s express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.&lt;/i&gt; (Copyright applies to all Abstracts.)
PLink https://search.ebscohost.com/login.aspx?direct=true&site=eds-live&db=8gh&AN=190796034
RecordInfo BibRecord:
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      – Type: doi
        Value: 10.1016/j.atmosenv.2025.121733
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      – Code: eng
        Text: English
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        PageCount: 1
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      – SubjectFull: Aerosols
        Type: general
      – SubjectFull: Air quality
        Type: general
      – SubjectFull: Carbon emissions
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      – SubjectFull: Seasonal temperature variations
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      – SubjectFull: Emission inventories
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      – SubjectFull: Central Europe
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              M: 02
              Text: Feb2026
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