Anthropogenic influence on biogenic SOA
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منابع مشابه
Condensed-phase biogenic-anthropogenic interactions with implications for cold cloud formation.
Anthropogenic and biogenic gas emissions contribute to the formation of secondary organic aerosol (SOA). When present, soot particles from fossil fuel combustion can acquire a coating of SOA. We investigate SOA-soot biogenic-anthropogenic interactions and their impact on ice nucleation in relation to the particles' organic phase state. SOA particles were generated from the OH oxidation of napht...
متن کاملEffects of anthropogenic emissions on aerosol formation from isoprene and monoterpenes in the southeastern United States.
Secondary organic aerosol (SOA) constitutes a substantial fraction of fine particulate matter and has important impacts on climate and human health. The extent to which human activities alter SOA formation from biogenic emissions in the atmosphere is largely undetermined. Here, we present direct observational evidence on the magnitude of anthropogenic influence on biogenic SOA formation based o...
متن کاملFormation of anthropogenic secondary organic aerosol (SOA) and its influence on biogenic SOA properties
Secondary organic aerosol (SOA) formation from mixed anthropogenic and biogenic precursors has been studied exposing reaction mixtures to natural sunlight in the SAPHIR chamber in Jülich, Germany. In this study aromatic compounds served as examples of anthropogenic volatile organic compound (VOC) and a mixture of α-pinene and limonene as an example for biogenic VOC. Several experiments with exc...
متن کاملSimulating the composition of SOA in TORCH 2003
Following on from the companion study (Johnson et al., 2005a), a photochemical tra-jectory model (PTM) has been used to simulate the chemical composition of organic aerosol for selected events during the 2003 TORCH (Tropospheric Organic Chemistry Experiment) field campaign. The PTM incorporates the speciated emissions of 124 5 non-methane anthropogenic volatile organic compounds (VOC) and three...
متن کاملSecondary organic aerosol formation from anthropogenic air pollution: Rapid and higher than expected
[1] The atmospheric chemistry of volatile organic compounds (VOCs) in urban areas results in the formation of ‘photochemical smog’, including secondary organic aerosol (SOA). State-of-the-art SOA models parameterize the results of simulation chamber experiments that bracket the conditions found in the polluted urban atmosphere. Here we show that in the real urban atmosphere reactive anthropogen...
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