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Sökning: L773:1680 7316 > (2020-2024) > Seasonal source var...

LIBRIS Formathandbok  (Information om MARC21)
FältnamnIndikatorerMetadata
00003196naa a2200433 4500
001oai:DiVA.org:su-181829
003SwePub
008200603s2020 | |||||||||||000 ||eng|
0247 a https://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-1818292 URI
0247 a https://doi.org/10.5194/acp-20-4561-20202 DOI
040 a (SwePub)su
041 a engb eng
042 9 SwePub
072 7a ref2 swepub-contenttype
072 7a art2 swepub-publicationtype
1001 a Andersson, Augustu Stockholms universitet,Institutionen för miljövetenskap4 aut0 (Swepub:su)auand
2451 0a Seasonal source variability of carbonaceous aerosols at the Rwanda Climate Observatory
264 c 2020-04-20
264 1b Copernicus GmbH,c 2020
338 a print2 rdacarrier
520 a Sub-Saharan Africa (SSA) is a global hot spot for aerosol emissions, which affect the regional climate and air quality. In this paper, we use ground-based observations to address the large uncertainties in the source-resolved emission estimation of carbonaceous aerosols. Ambient fine fraction aerosol was collected on filters at the high-altitude (2590 m a.s.1.) Rwanda Climate Observatory (RCO), a SSA background site, during the dry and wet seasons in 2014 and 2015. The concentrations of both the carbonaceous and inorganic ion components show a strong seasonal cycle, with highly elevated concentrations during the dry season. Source marker ratios, including carbon isotopes, show that the wet and dry seasons have distinct aerosol compositions. The dry season is characterized by elevated amounts of biomass burning products, which approach similar to 95 % for carbonaceous aerosols. An isotopic mass-balance estimate shows that the amount of the carbonaceous aerosol stemming from savanna fires may increase from 0.2 mu g m(-3) in the wet season up to 10 mu g m(-3) during the dry season. Based on these results, we quantitatively show that savanna fire is the key modulator of the seasonal aerosol composition variability at the RCO.
650 7a NATURVETENSKAPx Geovetenskap och miljövetenskap0 (SwePub)1052 hsv//swe
650 7a NATURAL SCIENCESx Earth and Related Environmental Sciences0 (SwePub)1052 hsv//eng
7001 a Kirillova, Elena N.u Stockholms universitet,Institutionen för miljövetenskap,National Research Council of Italy, Italy4 aut0 (Swepub:su)ekiri
7001 a Decesari, Stefano4 aut
7001 a DeWitt, H. Langley4 aut
7001 a Gasore, Jimmy4 aut
7001 a Potter, Katherine4 aut
7001 a Prinn, Ronald G.4 aut
7001 a Rupakheti, Maheswar4 aut
7001 a Ndikubwimana, Jean de Dieu4 aut
7001 a Nkusi, Julius4 aut
7001 a Safari, Bonfils4 aut
7102 a Stockholms universitetb Institutionen för miljövetenskap4 org
7730 t Atmospheric Chemistry And Physicsd : Copernicus GmbHg 20:8, s. 4561-4573q 20:8<4561-4573x 1680-7316x 1680-7324
8564 u https://doi.org/10.5194/acp-20-4561-2020y Fulltext
8564 u https://acp.copernicus.org/articles/20/4561/2020/acp-20-4561-2020.pdf
8564 8u https://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-181829
8564 8u https://doi.org/10.5194/acp-20-4561-2020

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