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Naslov:Characterization of brown carbon absorption in different European environments through source contribution analysis
Avtorji:ID Navarro-Barboza, Hector (Avtor)
ID Rovira, Jordi (Avtor)
ID Obiso, Vincenzo (Avtor)
ID Pozzer, Andrea (Avtor)
ID Via, Marta (Avtor)
ID Alastuey, Andrés (Avtor)
ID Querol, Xavier (Avtor)
ID Yus-Díez, Jesús (Avtor)
ID Ivančič, Matic (Avtor)
ID Rigler, Martin (Avtor), et al.
Datoteke:.pdf RAZ_Navarro-Barboza_Hector_2025.pdf (11,71 MB)
MD5: A7902B023A4FF1B2A70F7FCCC47DA8A9
 
URL https://acp.copernicus.org/articles/25/2667/2025/acp-25-2667-2025.pdf
 
Jezik:Angleški jezik
Vrsta gradiva:Neznano
Tipologija:1.01 - Izvirni znanstveni članek
Organizacija:UNG - Univerza v Novi Gorici
Opis:Brown carbon (BrC) is a fraction of organic aerosol (OA) that absorbs radiation in the ultraviolet and short visible wavelengths. Its contribution to radiative forcing is uncertain due to limited knowledge of its imaginary refractive index (k). This study investigates the variability of k for OA from wildfires, residential, shipping, and traffic emission sources over Europe. The Multiscale Online Nonhydrostatic Atmosphere Chemistry (MONARCH) model simulated OA concentrations and source contributions, feeding an offline optical tool to constrain k values at 370 nm. The model was evaluated against OA mass concentrations from aerosol chemical speciation monitors (ACSMs) and filter sample measurements, as well as aerosol light absorption measurements at 370 nm derived from an Aethalometer™ from 12 sites across Europe. Results show that MONARCH captures the OA temporal variability across environments (regional, suburban, and urban background). Residential emissions are a major OA source in colder months, while secondary organic aerosol (SOA) dominates in warmer periods. Traffic is a minor primary OA contributor. Biomass and coal combustion significantly influence OA absorption, with shipping emissions also notable near harbors. Optimizing k values at 370 nm revealed significant variability in OA light absorption, influenced by emission sources and environmental conditions. Derived k values for biomass burning (0.03 to 0.13), residential (0.008 to 0.13), shipping (0.005 to 0.08), and traffic (0.005 to 0.07) sources improved model representation of OA absorption compared to a constant k. Introducing such emission source-specific constraints is an innovative approach to enhance OA absorption in atmospheric models.
Ključne besede:aerosols, brown carbon, source contribution analysis
Status publikacije:Objavljeno
Verzija publikacije:Objavljena publikacija
Datum objave:01.01.2025
Leto izida:2025
Št. strani:str. 2667-2694
Številčenje:Vol. 25, issue 4
PID:20.500.12556/RUNG-9877 Novo okno
COBISS.SI-ID:227973379 Novo okno
UDK:502.3/.7
ISSN pri članku:1680-7324
eISSN:1680-7324
DOI:10.5194/acp-25-2667-2025 Novo okno
NUK URN:URN:SI:UNG:REP:QGKJXTF4
Datum objave v RUNG:04.03.2025
Število ogledov:472
Število prenosov:4
Metapodatki:XML DC-XML DC-RDF
:
NAVARRO-BARBOZA, Hector, ROVIRA, Jordi, OBISO, Vincenzo, POZZER, Andrea, VIA, Marta, ALASTUEY, Andrés, QUEROL, Xavier, YUS-DÍEZ, Jesús, IVANČIČ, Matic in RIGLER, Martin, 2025, Characterization of brown carbon absorption in different European environments through source contribution analysis. Atmospheric chemistry and physics [na spletu]. 2025. Vol. 25, no. 4, p. 2667–2694. [Dostopano 7 april 2025]. DOI 10.5194/acp-25-2667-2025. Pridobljeno s: https://repozitorij.ung.si/IzpisGradiva.php?lang=slv&id=9877
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Gradivo je del revije

Naslov:Atmospheric chemistry and physics
Skrajšan naslov:Atmos. chem. phys.
Založnik:European Geophysical Society, Copernicus GmbH
ISSN:1680-7324
COBISS.SI-ID:1959012 Novo okno

Licence

Licenca:CC BY 4.0, Creative Commons Priznanje avtorstva 4.0 Mednarodna
Povezava:http://creativecommons.org/licenses/by/4.0/deed.sl
Opis:To je standardna licenca Creative Commons, ki daje uporabnikom največ možnosti za nadaljnjo uporabo dela, pri čemer morajo navesti avtorja.
Začetek licenciranja:28.02.2025

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