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Naslov:Atmospheric black carbon in the metropolitan area of La Paz and El Alto, Bolivia: concentration levels and emission sources
Avtorji:ID Mardoñez-Balderrama, Valeria (Avtor)
ID Močnik, Griša (Avtor)
ID Pandolfi, Marco (Avtor)
ID Modini, Robin L. (Avtor)
ID Velarde, Fernando (Avtor)
ID Renzi, Laura (Avtor)
ID Marinoni, Angela (Avtor)
ID Jaffrezo, Jean-Luc (Avtor)
ID Moreno R., Isabel (Avtor)
ID Aliaga, Diego (Avtor)
Datoteke:URL https://acp.copernicus.org/articles/24/12055/2024/
 
.pdf Mardonez_-_ACP_2024_-_Atmospheric_BC_in_the_metropolitan_area_of_La_Paz_and_El_Alto_-_concentrations_and_sources.pdf (3,35 MB)
MD5: 83E5DFD1022B951E6B13842DAAB131B2
 
URL https://acp.copernicus.org/articles/24/12055/2024/acp-24-12055-2024.pdf
 
Jezik:Angleški jezik
Vrsta gradiva:Neznano
Tipologija:1.01 - Izvirni znanstveni članek
Organizacija:UNG - Univerza v Novi Gorici
Opis:Abstract. Black carbon (BC) is a major component of submicron particulate matter (PM), with significant health and climate impacts. Many cities in emerging countries lack comprehensive knowledge about BC emissions and exposure levels. This study investigates BC concentration levels, identifies its emission sources, and characterizes the optical properties of BC at urban background sites of the two largest high-altitude Bolivian cities: La Paz (LP) (3600 m above sea level) and El Alto (EA) (4050 m a.s.l.), where atmospheric oxygen levels and intense radiation may affect BC production. The study relies on concurrent measurements of equivalent black carbon (eBC), elemental carbon (EC), and refractory black carbon (rBC) and their comparison with analogous data collected at the nearby Chacaltaya Global Atmosphere Watch Station (5240 m a.s.l). The performance of two independent source apportionment techniques was compared: a bilinear model and a least-squares multilinear regression (MLR). Maximum eBC concentrations were observed during the local dry season (LP: eBC = 1.5 ± 1.6 µg m−3; EA: 1.9±2.0 µg m−3). While eBC concentrations are lower at the mountain station, daily transport from urban areas is evident. Average mass absorption cross sections of 6.6–8.2 m2 g−1 were found in the urban area at 637 nm. Both source apportionment methods exhibited a reasonable level of agreement in the contribution of biomass burning (BB) to absorption. The MLR method allowed the estimation of the contribution and the source-specific optical properties for multiple sources, including open waste burning.
Ključne besede:black carbon, aerosol absorption, source apportionment, mass absorption cross-section
Status publikacije:Objavljeno
Verzija publikacije:Objavljena publikacija
Datum objave:01.01.2024
Leto izida:2024
Št. strani:str. 12055-12077
Številčenje:Vol. 24, issue 20
PID:20.500.12556/RUNG-9438 Novo okno
COBISS.SI-ID:213241347 Novo okno
UDK:502.3/.7
ISSN pri članku:1680-7324
eISSN:1680-7324
DOI:10.5194/acp-24-12055-2024 Novo okno
NUK URN:URN:SI:UNG:REP:FKZN3VW1
Datum objave v RUNG:29.10.2024
Število ogledov:879
Število prenosov:1
Metapodatki:XML DC-XML DC-RDF
:
MARDOÑEZ-BALDERRAMA, Valeria, MOČNIK, Griša, PANDOLFI, Marco, MODINI, Robin L., VELARDE, Fernando, RENZI, Laura, MARINONI, Angela, JAFFREZO, Jean-Luc, MORENO R., Isabel in ALIAGA, Diego, 2024, Atmospheric black carbon in the metropolitan area of La Paz and El Alto, Bolivia: concentration levels and emission sources. Atmospheric chemistry and physics [na spletu]. 2024. Vol. 24, no. 20, p. 12055–12077. [Dostopano 7 april 2025]. DOI 10.5194/acp-24-12055-2024. Pridobljeno s: https://repozitorij.ung.si/IzpisGradiva.php?lang=slv&id=9438
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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

Gradivo je financirano iz projekta

Financer:ARIS - Javna agencija za znanstvenoraziskovalno in inovacijsko dejavnost Republike Slovenije
Številka projekta:P1-0385-2020
Naslov:Daljinsko zaznavanje atmosferskih lastnosti

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:28.10.2024

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