Search Results - "Souza, Rodrigo A. F."
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Chemical Signatures of Seasonally Unique Anthropogenic Influences on Organic Aerosol Composition in the Central Amazon
Published in Environmental science & technology (18-04-2023)“…Urbanization and fires perturb the quantities and composition of fine organic aerosol in the central Amazon, with ramifications for radiative forcing and…”
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Development of a hydrophilic interaction liquid chromatography (HILIC) method for the chemical characterization of water-soluble isoprene epoxydiol (IEPOX)-derived secondary organic aerosol
Published in Environmental science--processes & impacts (14-11-2018)“…Acid-catalyzed multiphase chemistry of isoprene epoxydiols (IEPOX) on sulfate aerosol produces substantial amounts of water-soluble secondary organic aerosol…”
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Single-particle characterization of aerosols collected at a remote site in the Amazonian rainforest and an urban site in Manaus, Brazil
Published in Atmospheric chemistry and physics (31-01-2019)“…In this study, aerosol samples collected at a remote site in the Amazonian rainforest and an urban site in Manaus, Brazil, were investigated on a…”
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Cloud characteristics, thermodynamic controls and radiative impacts during the Observations and Modeling of the Green Ocean Amazon (GoAmazon2014/5) experiment
Published in Atmospheric chemistry and physics (06-12-2017)“…Routine cloud, precipitation and thermodynamic observations collected by the Atmospheric Radiation Measurement (ARM) Mobile Facility (AMF) and Aerial Facility…”
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Prescribed Burning Reduces Large, High-Intensity Wildfires and Emissions in the Brazilian Savanna
Published in Fire (Basel, Switzerland) (01-09-2021)“…Brazil has recently (2014) changed from a zero-fire policy to an Integrated Fire Management (IFM) program with the active use of prescribed burning (PB) in…”
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Amazon boundary layer aerosol concentration sustained by vertical transport during rainfall
Published in Nature (London) (17-11-2016)“…Rapid vertical transport of small aerosol particles from the free troposphere to the atmospheric boundary layer occurs during precipitation and maintains the…”
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Radical Formation by Fine Particulate Matter Associated with Highly Oxygenated Molecules
Published in Environmental science & technology (05-11-2019)“…Highly oxygenated molecules (HOMs) play an important role in the formation and evolution of secondary organic aerosols (SOA). However, the abundance of HOMs in…”
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Pacific and Atlantic multidecadal variability relations to the El Niño events and their effects on the South American rainfall
Published in International journal of climatology (30-03-2020)“…This paper examines the oceanic mean states associated with the Pacific decadal oscillation (PDO) and the Atlantic multidecadal oscillation (AMO) and their…”
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Isoprene photochemistry over the Amazon rainforest
Published in Proceedings of the National Academy of Sciences - PNAS (31-05-2016)“…Isoprene photooxidation is a major driver of atmospheric chemistry over forested regions. Isoprene reacts with hydroxyl radicals (OH) and molecular oxygen to…”
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Molecular composition of organic aerosols in central Amazonia: an ultra-high-resolution mass spectrometry study
Published in Atmospheric chemistry and physics (23-09-2016)“…The Amazon Basin plays key role in atmospheric chemistry, biodiversity and climate change. In this study we applied nanoelectrospray (nanoESI)…”
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Sub-micrometre particulate matter is primarily in liquid form over Amazon rainforest
Published in Nature geoscience (01-01-2016)“…The physical state of atmospheric particulate matter affects its growth and reactivity, which can affect climate. Measurements of particle rebound reveal that…”
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A sampler for atmospheric volatile organic compounds by copter unmanned aerial vehicles
Published in Atmospheric measurement techniques (13-06-2019)“…A sampler for volatile organic compounds (VOCs) was developed for deployment on a multicopter unmanned aerial vehicle (UAV). The sampler was designed to…”
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Sulfuric acid in the Amazon basin: measurements and evaluation of existing sulfuric acid proxies
Published in Atmospheric chemistry and physics (05-08-2022)“…Sulfuric acid is a key contributor to new particle formation, though measurements of its gaseous concentrations are difficult to make. Several…”
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Aerosols from anthropogenic and biogenic sources and their interactions – modeling aerosol formation, optical properties, and impacts over the central Amazon basin
Published in Atmospheric chemistry and physics (05-05-2021)“…The Green Ocean Amazon experiment – GoAmazon 2014–2015 – explored the interactions between natural biogenic forest emissions from central Amazonia and urban…”
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Soluble iron nutrients in Saharan dust over the central Amazon rainforest
Published in Atmospheric chemistry and physics (22-02-2017)“…The intercontinental transport of aerosols from the Sahara desert plays a significant role in nutrient cycles in the Amazon rainforest, since it carries many…”
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Contributions of mobile, stationary and biogenic sources to air pollution in the Amazon rainforest: a numerical study with the WRF-Chem model
Published in Atmospheric chemistry and physics (30-06-2017)“…This paper evaluates the contributions of the emissions from mobile, stationary and biogenic sources on air pollution in the Amazon rainforest by using the…”
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The friagem event in the central Amazon and its influence on micrometeorological variables and atmospheric chemistry
Published in Atmospheric chemistry and physics (14-01-2021)“…In the period between 9 and 11 July 2014, a friagem event reached the Amazon region. On 11 July, the southwest flow related to the friagem converged with the…”
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Anthropogenic influences on the physical state of submicron particulate matter over a tropical forest
Published in Atmospheric chemistry and physics (06-02-2017)“…The occurrence of nonliquid and liquid physical states of submicron atmospheric particulate matter (PM) downwind of an urban region in central Amazonia was…”
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Urban influence on the concentration and composition of submicron particulate matter in central Amazonia
Published in Atmospheric chemistry and physics (23-08-2018)“…An understanding of how anthropogenic emissions affect the concentrations and composition of airborne particulate matter (PM) is fundamental to quantifying the…”
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Influence of urban pollution on the production of organic particulate matter from isoprene epoxydiols in central Amazonia
Published in Atmospheric chemistry and physics (06-06-2017)“…The atmospheric chemistry of isoprene contributes to the production of a substantial mass fraction of the particulate matter (PM) over tropical forests…”
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