Essays about: "organic aerosols"

Showing result 1 - 5 of 12 essays containing the words organic aerosols.

  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

  2. 2. Carbonaceous aerosols and trace metal deposition in high-latitude snow : a comparative study in Sweden and Alaska

    University essay from SLU/Dept. of Soil and Environment

    Author : Anika Pinzner; [2019]
    Keywords : PM; carbon particles; pXRF; arctic; subarctic; EC OC; LAHM; PSAP; TOT; ICP-MS; filter; contamination; albedo;

    Abstract : This study investigates the advantages and disadvantages of several destructive and non-destructive analytical methods that can be employed to characterize airborne par-ticulate matter (PM) deposited in seasonal snow. To this end, a comparative study was conducted on PM obtained from snowpack surveys in two Arctic/subarctic regions of Northern Sweden and Interior Alaska, USA. READ MORE

  3. 3. Early season BVOC emission for young potted Norway spruce (Picea abies)

    University essay from Lunds universitet/Institutionen för naturgeografi och ekosystemvetenskap

    Author : Erica Jaakkola; [2019]
    Keywords : Physical Geography and Ecosystem analysis; BVOC; Norway spruce; PTR-TOFMS; photosynthesis; Earth and Environmental Sciences;

    Abstract : Biogenic volatile organic compounds (BVOC) are emitted naturally from the biosphere to the atmosphere and are a part of the global carbon emissions. BVOCs are contributing to around 5-10% of the total net carbon exchange to the atmosphere. READ MORE

  4. 4. Experimental and theoretical studies of water droplet surfaces in the presence of glycerol

    University essay from Uppsala universitet/Institutionen för fysik och astronomi

    Author : Nygren Anton; [2017]
    Keywords : glycerol; water surface; BESSY II; MD; GROMACS; PES; XPS; glycerol; vattenytor; BESSY II; MD; GROMACS; PES; XPS;

    Abstract : Water aerosols affect the climate because they have an impact on the radiation balance and cloud formation. Water is present in all forms in the atmosphere (water, ice and steam), for example as rain and hail. Water aerosols play an important role in many biological and chemical processes in the atmosphere. READ MORE

  5. 5. 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