Aerosol emissions from forest and grassland burnings in the southern amazon basin and central Brazil

Leslie, A.C.D.

doi:10.1016/0029-554x(81)90634-0

Cited by 27 publications

(11 citation statements)

References 7 publications

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“…In agreement with our results, several authors had found that emissions of small particles of K + occur during vegetation fires (Crozat et al, 1978;Leslie, 1981;Andreae, 1983). We do not know if fine PO]-particles are emitted directly from the fires or if PO]-is formed afterwards from gaseous precursors.…”

Section: 23supporting

confidence: 81%

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Particle-size distribution of inorganic water soluble ions in the venezuelan savannah atmosphere during burning and nonburning periods

Sanhueza

Rondôn

1988

J Atmos Chem

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The results presented are the first complete analysis of inorganic soluble ions in a tropical savannah region. Atmospheric particles were collected in six rural Venezuelan savannah sites. Concentrations and size distribution of NO3, SO ]-, CI-, PO43-, NH], Na +, K ÷, Ca 2÷ and Mg 2÷ were determined in samples collected with Hi Vol samplers equipped with five-stage cascade impactors. Concentrations were higher in the dry season, with a maximum during the burning periods. Using Na ÷ as a reference, the results show a deficit of CI-and, with the exception of Mg 2÷, an enrichment of all other ions with respect to marine aerosols. Significant variations were observed in particle-size distribution between different periods. Various pairs of ions present similar size distributions: SO 2-and NI-~4; Cl-and Na ÷; PO 3-and K ÷; Ca 2÷, Mg 2+ and NO 3 ; indicating that the ions were produced by the same source and/or were involved in similar atmospheric processes. Possible primary sources, the gas-to-particle atmospheric process, environmental implication of long-range transport of nutrients during dry seasons, etc., are discussed.

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Section: 23supporting

confidence: 81%

“…We do not know if fine PO]-particles are emitted directly from the fires or if PO]-is formed afterwards from gaseous precursors. Leslie (1981) on grass (savannah region northeast of Brasilia) and forest (Mato Grosso) fires, found that total P was mostly in the fine particles.…”

Section: 23mentioning

confidence: 99%

Particle-size distribution of inorganic water soluble ions in the venezuelan savannah atmosphere during burning and nonburning periods

Sanhueza

Rondôn

1988

J Atmos Chem

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“…Due to the difficulty of separating different components, the carbon contained in these aerosols ends up being counted in a mistaken way as carbon released in the form of gas instead of as particulate material, as demonstrated in the examples of distribution of the ''affected carbon'' by Lobert et al (1991) and Cachier et al (1995). These longlived aerosols reside in the atmosphere for variable lengths of time and have a very active role in dispersing solar radiation and in cloud micro-physics (Leslie, 1981;Crutzen and Andreae, 1990;Jacobson, 2001). These aerosol emissions can change the radiative balance and the hydrological cycle of tropical areas (Andreae et al, 1998(Andreae et al, , 2004.…”

Section: Fate Of the Carbonmentioning

confidence: 94%

Above-ground biomass and the fate of carbon after burning in the savannas of Roraima, Brazilian Amazonia

Barbosa

Fearnside

2005

Forest Ecology and Management

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“…For non-desert areas such as the north European continent, we can assume that the abundance of phosphorus in soils is close to that of the overall crustal material and thus, the high P/Al ratios strongly suggest that large contributions from industrial and agricultural emissions of phosphorus are superimposed on the European crustal source. Moreover, it has been recently pointed out that emissions from continental biogenJc sources and biomass buming are characterized by particulate emissions significantly enriched with phosphorus (Leslie, 1981;Artaxo et al, 1990). In the Mediterranean region and especially in France, Spain, Italy and Greece, forest fires often occur during summer and thus may constitute a sporadic source of particulate phosphorus over the Mediterranean basin which is, however, difficult to estimate quantitatively.…”

Section: Temporal Variability Of the Atmospheric Particulate Phosphormentioning

confidence: 99%

Source, transport and deposition of atmospheric phosphorus over the Northwestern Mediterranean

et al. 1992

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Atmospheric concentrations and total deposition (wet+dry) of phosphorus were measured over the northwestern Mediterranean between april 1985 and march 1988. A seasonal cycle of both atmospheric concentrations and total deposition is observed, the higher values being recorded during the dry season. Air-mass trajectory analyses allow an identification of the major sources of atmospheric phosphorus: soil-derived dust from desert areas of north Africa and anthropogenic emissions from european countries. The impact of the atmospheric input as a source of phosphorus for surface Mediterranean waters is tentatively assessed on both annual and seasonal time scales. The results suggest that the atmospheric input of phosphorus could be significant to Mediterranean oligotrophic zones, especially during summer when phosphorus input from deeper waters into the photic layer is minimum.

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Aerosol emissions from forest and grassland burnings in the southern amazon basin and central Brazil

Cited by 27 publications

References 7 publications

Particle-size distribution of inorganic water soluble ions in the venezuelan savannah atmosphere during burning and nonburning periods

Particle-size distribution of inorganic water soluble ions in the venezuelan savannah atmosphere during burning and nonburning periods

Above-ground biomass and the fate of carbon after burning in the savannas of Roraima, Brazilian Amazonia

Source, transport and deposition of atmospheric phosphorus over the Northwestern Mediterranean

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