Sökning: WFRF:(Prinn Ronald G.) > (2022) > Atmospheric Black C...
Fältnamn | Indikatorer | Metadata |
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000 | 03763naa a2200481 4500 | |
001 | oai:DiVA.org:su-212350 | |
003 | SwePub | |
008 | 221206s2022 | |||||||||||000 ||eng| | |
024 | 7 | a https://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-2123502 URI |
024 | 7 | a https://doi.org/10.1021/acs.est.2c058372 DOI |
040 | a (SwePub)su | |
041 | a engb eng | |
042 | 9 SwePub | |
072 | 7 | a ref2 swepub-contenttype |
072 | 7 | a art2 swepub-publicationtype |
100 | 1 | a Kirago, Leonardu Stockholms universitet,Institutionen för miljövetenskap4 aut0 (Swepub:su)leki2173 |
245 | 1 0 | a Atmospheric Black Carbon Loadings and Sources over Eastern Sub-Saharan Africa Are Governed by the Regional Savanna Fires |
264 | c 2022-10-30 | |
264 | 1 | b American Chemical Society (ACS),c 2022 |
338 | a print2 rdacarrier | |
520 | a Vast black carbon (BC) emissions from sub-Saharan Africa are perceived to warm the regional climate, impact rainfall patterns, and impair human respiratory health. However, the magnitudes of these perturbations are ill-constrained, largely due to limited ground-based observations and uncertainties in emissions from different sources. This paper reports multiyear concentrations of BC and other key PM2.5 aerosol constituents from the Rwanda Climate Observatory, serving as a regional receptor site. We find a strong seasonal cycle for all investigated chemical species, where the maxima coincide with large-scale upwind savanna fires. BC concentrations show notable interannual variability, with no clear long-term trend. The Δ14C and δ13C signatures of BC unambiguously show highly elevated biomass burning contributions, up to 93 ± 3%, with a clear and strong savanna burning imprint. We further observe a near-equal contribution from C3 and C4 plants, irrespective of air mass source region or season. In addition, the study provides improved relative emission factors of key aerosol components, organic carbon (OC), K+, and NO3–, in savanna-fires-influenced background atmosphere. Altogether, we report quantitative source constraints on Eastern Africa BC emissions, with implications for parameterization of satellite fire and bottom-up emission inventories as well as regional climate and chemical transport modeling. | |
650 | 7 | a NATURVETENSKAPx Geovetenskap och miljövetenskap0 (SwePub)1052 hsv//swe |
650 | 7 | a NATURAL SCIENCESx Earth and Related Environmental Sciences0 (SwePub)1052 hsv//eng |
653 | a source apportionment | |
653 | a carbon isotopes | |
653 | a Savanna fires | |
653 | a relative emission factors | |
700 | 1 | a Gustafsson, Örjanu Stockholms universitet,Institutionen för miljövetenskap4 aut0 (Swepub:su)ogust |
700 | 1 | a Gaita, Samuel M.,d 1976-u Stockholms universitet,Institutionen för miljövetenskap4 aut0 (Swepub:su)saga4479 |
700 | 1 | a Haslett, Sophie L.u Stockholms universitet,Institutionen för miljövetenskap4 aut0 (Swepub:su)soha8177 |
700 | 1 | a deWitt, H. Langley4 aut |
700 | 1 | a Gasore, Jimmy4 aut |
700 | 1 | a Potter, Katherine E.4 aut |
700 | 1 | a Prinn, Ronald G.4 aut |
700 | 1 | a Rupakheti, Maheswar4 aut |
700 | 1 | a De Dieu Ndikubwimana, Jean4 aut |
700 | 1 | a Safari, Bonfils4 aut |
700 | 1 | a Andersson, Augustu Stockholms universitet,Institutionen för miljövetenskap4 aut0 (Swepub:su)auand |
710 | 2 | a Stockholms universitetb Institutionen för miljövetenskap4 org |
773 | 0 | t Environmental Science and Technologyd : American Chemical Society (ACS)g 56:22, s. 15460-15469q 56:22<15460-15469x 0013-936Xx 1520-5851 |
856 | 4 | u https://doi.org/10.1021/acs.est.2c05837y Fulltext |
856 | 4 8 | u https://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-212350 |
856 | 4 8 | u https://doi.org/10.1021/acs.est.2c05837 |
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