Essays about: "Secondary organic aerosol"

Found 5 essays containing the words Secondary organic aerosol.

  1. 1. Secondary aerosol formation from dimethyl sulfide - Smog chamber experiments and detailed process modelling

    University essay from Lunds universitet/Kärnfysik; Lunds universitet/Fysiska institutionen

    Author : Dana Lüdemann; [2020]
    Keywords : aerosol modelling; atmospheric physics and chemistry; marine aerosols; ADCHAM; aerosol; dimethyl sulfide; Physics and Astronomy;

    Abstract : The aim of this thesis was to investigate the secondary aerosol formation from dimethylsulfide (DMS) using the aerosol dynamics, gas- and particle-phase chemistry kinetic multi-layer model, ADCHAM. The first simulations, concerning the butanol oxidation via hydroxyl radicals (OH), were performed to characterize the UV-light source of the AURA smog chamber (Aarhus university, Denmark), later used for the DMS experiments. READ MORE

  3. 2. The link between secondary organic aerosol and monoterpenes at a boreal forest site

    University essay from Lunds universitet/Institutionen för naturgeografi och ekosystemvetenskap

    Author : Ying Zhou; [2017]
    Keywords : physical geography; ecosystem analysis; BVOC; SOA; Monoterpenes; temperature; relative humidity; wind; Earth and Environmental Sciences;

    Abstract : Secondary organic aerosol (SOA) plays a significant role in climate change by altering the global atmospheric radiation budget. Biogenic volatile organic compounds (BVOCs) are major sources for the formation of SOA. READ MORE

  4. 3. Is there new particle formation in the marine boundary layer of the North Sea?

    University essay from Lunds universitet/Institutionen för naturgeografi och ekosystemvetenskap

    Author : Natalia Kelbus; [2014]
    Keywords : Geography; Physical Geography; aerosol particles; new particle formation; nucleation; particle size distribution; NanoMap; Science General; Earth and Environmental Sciences;

    Abstract : The effect of aerosol particles on climate and the human health emphasizes the necessity to focus on the research about aerosol particles. Aerosol particles emitted due to anthropogenic activities increase the scattering and absorption of solar radiation in the atmosphere which leads to an increased cooling of the climate (direct effect). READ MORE

  5. 4. Investigation of possible non-additive behavior in the formation of secondary organic aerosol from a mixture of anthropogenic and biogenic VOC precursors

    University essay from Lunds universitet/Kärnfysik; Lunds universitet/Fysiska institutionen

    Author : John Falk; [2014]
    Keywords : Volatile organic compounds; Biogenic; Anthropogenic; Secondary organic aerosol; Non-additive; Flow reactor; Scanning Mobility Particle Sizer; Earth and Environmental Sciences;

    Abstract : Secondary organic aerosol (SOA) mass yields were tested for six combinations of two anthropogenic volatile organic compounds (AVOC); m-xylene & toluene, and three biogenic volatile organic compounds (BVOC); α-pinene, myrcene & isoprene. The purpose was to investigate any non-additive results in SOA formation from mixtures of AVOCs and BVOCs by comparing experimental yield with corresponding two-product model yields. READ MORE

  6. 5. Within-canopy sesquiterpene ozonolysis in Amazonia

    University essay from Lunds universitet/Institutionen för naturgeografi och ekosystemvetenskap

    Author : Ana Maria Yáñez Serrano; [2011]
    Keywords : sesquiterpenes; ozonolysis; ozone; Amazon; oxidation; Earth and Environmental Sciences;

    Abstract : Populärvetenskaplig sammanfattning: En mycket reaktiv spårgas i Amazonas. Växter släpper ut flyktiga organiska ämnen, som är mycket viktiga eftersom de släpps ut i stora mängder och påverkar tillverkningen av aerosoler, förändrar luftkvaliteten och fungerar som kommunikation mellan växter och herbivorer. READ MORE