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Naslov:Contribution of black carbon and desert dust to aerosol absorption in the atmosphere of the Eastern Arabian Peninsula
Avtorji:ID Mahfouz, Mohamed M. K. (Avtor)
ID Skok, Gregor (Avtor)
ID Sciare, Jean (Avtor)
ID Pikridas, Michael (Avtor)
ID Alfarra, M. R. (Avtor)
ID Moosakutty, Shamjad (Avtor)
ID Alföldy, Bálint (Avtor)
ID Ivančič, Matic (Avtor)
ID Rigler, Martin (Avtor)
ID Gregorič, Asta (Avtor)
ID Podlipec, Rok (Avtor)
ID Močnik, Griša (Avtor)
Datoteke:.pdf Mahfouz_-_AE_2024_-_proof_-_Contribution_of_BC_and_desert_dust_to_aerosol_absorption_in_Arabian_Peninsula.pdf (3,52 MB)
MD5: D160C2F0B8F24EC0B4A54AE4663C8B2B
 
.pdf 1-s2.0-S135223102400102X-main.pdf (18,90 MB)
MD5: B4FFB5F12028AD61DB17F5CC222DA843
 
URL https://www.sciencedirect.com/science/article/pii/S135223102400102X
 
Jezik:Angleški jezik
Vrsta gradiva:Neznano
Tipologija:1.01 - Izvirni znanstveni članek
Organizacija:UNG - Univerza v Novi Gorici
Opis:Discriminating the absorption coefficients of aerosol mineral dust and black carbon (BC) in different aerosol size fractions is a challenge because of BC's large mass absorption cross-section compared to dust. Ambient aerosol wavelength dependent absorption coefficients in supermicron and submicron size fractions were determined with a high time resolution. The measurements were performed simultaneously using identical systems at an urban and a regional background site in Qatar. At each site, measurements were taken by co-located Aethalometers, one with a virtual impactor (VI) and the other with a PM1 cyclone to respectively collect super-micron-enhanced and submicron fractions. The combined measurement of aerosol absorption and scattering coefficients enabled the particles to be classified based on their optical properties' wavelength dependence. The classification reveals the presence of BC internally/externally mixed with different aerosols. Helium ion microscopy images provided information concerning the extent of mineral dust in the submicron fraction. The determination of absorption coefficients during dust storms and non-dust periods was used to establish the absorption Ångström exponent for dust and BC. Non-parametric wind regression, potential source contribution function and back-trajectory analysis reveal major regional sources of desert dust associated with north-westerly winds and a minor local dust contribution. In contrast, major BC sources found locally were associated with south-westerly winds with a smaller contribution made by offshore emissions transported by north-easterly and easterly winds. The use of a pair of Aethalometers with VI and PM1 inlets separates contributions of BC and dust to the aerosol absorption coefficient.
Ključne besede:aerosol absorption, black carbon, mineral dust, desert dust, Arabian Peninsula
Status publikacije:Objavljeno
Verzija publikacije:Objavljena publikacija
Datum objave:01.05.2024
Leto izida:2024
Št. strani:18 str.
Številčenje:Vol. 324, article no. ǂ120427
PID:20.500.12556/RUNG-8908-ad95d3af-3cef-9a3e-2cfb-4888c2bfbc65 Novo okno
ISSN:1352-2310
COBISS.SI-ID:187285507 Novo okno
UDK:502.3/.7
ISSN pri članku:1352-2310
DOI:10.1016/j.atmosenv.2024.120427 Novo okno
NUK URN:URN:SI:UNG:REP:4QQBDPQD
Datum objave v RUNG:29.02.2024
Število ogledov:543
Število prenosov:6
Metapodatki:XML RDF-CHPDL DC-XML DC-RDF
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Gradivo je del revije

Naslov:Atmospheric environment
Skrajšan naslov:Atmos. environ.
Založnik:Pergamon
ISSN:1352-2310
COBISS.SI-ID:16086277 Novo okno

Licence

Licenca:Drugo
Opis:https://www.elsevier.com/tdm/userlicense/1.0/
Začetek licenciranja:01.02.2024

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:27.02.2024

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