| Texto completo | |
| Autor(es): Mostrar menos - |
Holanda, Bruna A.
;
Franco, Marco A.
;
Walter, David
;
Artaxo, Paulo
;
Carbone, Samara
;
Cheng, Yafang
;
Chowdhury, Sourangsu
;
Ditas, Florian
;
Gysel-Beer, Martin
;
Klimach, Thomas
;
Kremper, Leslie A.
;
Krueger, Ovid O.
;
Lavric, Jost, V
;
Lelieveld, Jos
;
Ma, Chaoqun
;
Machado, Luiz A. T.
;
Modini, Robin L.
;
Morais, Fernando G.
;
Pozzer, Andrea
;
Saturno, Jorge
;
Su, Hang
;
Wendisch, Manfred
;
Wolff, Stefan
;
Poehlker, Mira L.
;
Andreae, Meinrat O.
;
Poeschl, Ulrich
;
Poehlker, Christopher
Número total de Autores: 27
|
| Tipo de documento: | Artigo Científico |
| Fonte: | COMMUNICATIONS EARTH & ENVIRONMENT; v. 4, n. 1, p. 15-pg., 2023-05-05. |
| Resumo | |
Smoke from vegetation fires affects air quality, atmospheric cycling, and the climate in the Amazon rain forest. A major unknown has remained the quantity of long-range transported smoke from Africa in relation to local and regional fire emissions. Here we quantify the abundance, seasonality, and properties of African smoke in central Amazonia. We show that it accounts for similar to 60% of the black carbon concentrations during the wet season and similar to 30% during the dry season. The African smoke influences aerosol-radiation interactions across the entire Amazon, with the strongest impact on the vulnerable eastern basin, a hot spot of climate and land use change. Our findings further suggest that the direct influence of African smoke has been historically relevant for soil fertilization, the carbon and water cycles, and, thus, the development of the Amazon forest ecosystem, even in the pre-industrial era. Biomass combustion smoke transported from Africa accounts for about 60% of black carbon concentrations in the central Amazon during the rainy season, according to long-term measurements of refractory black carbon in 2019 and 2020 (AU) | |
| Processo FAPESP: | 17/17047-0 - O ciclo de vida de aerossóis e nuvens na Amazônia: emissões biogênicas, emissões de queimadas e impactos no ecossistema |
| Beneficiário: | Paulo Eduardo Artaxo Netto |
| Modalidade de apoio: | Auxílio à Pesquisa - Programa de Pesquisa sobre Mudanças Climáticas Globais - Temático |