Search for dissertations about: "atmospheric aerosol particles"

Showing result 1 - 5 of 66 swedish dissertations containing the words atmospheric aerosol particles.

  1. 1. Quantification of sources and removal mechanisms of atmospheric aerosol particles

    University dissertation from Stockholm : Department of Environmental Science and Analytical Chemistry, Stockholm University

    Author : Henrik Grythe; Johan Ström; Dominick Spracklen; [2017]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; aerosol; aerosol removal; aerosol emission; aerosol sources; FLEXPART; Arctic aerosol; Applied Environmental Science; tillämpad miljövetenskap;

    Abstract : The focus of this work has been to quantify important processes for climatically relevant aerosols, and to improve our understanding of, and ability to accurately model, aerosols in the atmosphere on a large scale. This thesis contains five papers focused on different parts of the life cycle of atmospheric aerosol particles. READ MORE

  2. 2. The high Arctic summer aerosol Size, chemical composition, morphology and evolution over the pack-ice

    University dissertation from Stockholm : Department of Meteorology, Stockholm University

    Author : Evelyne Hamacher-Barth; Caroline Leck; Stephan Weinbruch; [2017]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Arctic; aerosol; marine gel; electron microscopy; EDX-spectroscopy; chemical composition; morphology; size distribution; Atmospheric Sciences and Oceanography; atmosfärvetenskap och oceanografi;

    Abstract : Aerosol particles, especially in the high Arctic are still not very well represented in climate models. Particle size and number concentrations are strongly under-predicted and temporal variations of aerosol composition and size are still not very well understood, mainly due to the sparsity of observations. READ MORE

  3. 3. Submicrometre aerosol emissions from sea spray and road traffic

    University dissertation from Stockholm : Meteorologiska institutionen (MISU)

    Author : Monica Mårtensson; Douglas Nilsson; Christer Johansson; Michael Smith; [2007]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Eddy covariance method; aerosol emissions; submicrometre sea salt parameterisation; primary marine organic aerosols; sea spray; road traffic emission factors; air-sea exchange; aerosol dynamics model; internal aerosol mixing; combustion aerosols; NATURAL SCIENCES Earth sciences Atmosphere and hydrosphere sciences; NATURVETENSKAP Geovetenskap Atmosfärs- och hydrosfärsvetenskap; atmosfärvetenskap; Atmospheric Sciences;

    Abstract : The uncertainty of the climate and health effects of aerosols is still large, one important reason being lack of knowledge of the primary emissions. This thesis combines laboratory and field experiments, and process modelling in an effort to better quantify the submicrometre aerosol emissions and to understand some of the processes in the atmosphere. READ MORE

  4. 4. Hygroscopic Properties of Atmospheric Aerosol Particles in Various Environments

    University dissertation from Division of Nuclear Physics, PO Box 118, S-221 00 Lund, Sweden

    Author : Jingchuan Zhou; [2001]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; tandem differential mobility analyser TDMA ; internal and external mixture; closure study; GDF95; AOE-96; Fysik; Physics; Kärnfysik; Nuclear physics; ACE-2; CLAIRE98; differential mobility particle sizer DMPS ; atmospheric aerosol particles; hygroscopic growth; Fysicumarkivet A:2001:Zhou;

    Abstract : Atmospheric aerosol particles affect our living environment in many ways. Their effects are influenced by the interaction between the aerosol particles and the ubiquitous water vapour. The number-size distribution is a primary important parameter for aerosol particles and can be measured using the differential mobility particle sizer (DMPS). READ MORE

  5. 5. Regional studies of the optical, chemical and microphysical properties of atmospheric aerosols Radiative impacts and cloud formation

    University dissertation from Stockholm : Meteorologiska institutionen (MISU)

    Author : Admir Créso Targino; Douglas Nilsson; Radovan Krejci; Richard Leaitch; [2005]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; atmospheric aerosols; particles; optical properties; cloud; ice crystals; chemical composition; NATURAL SCIENCES Earth sciences Atmosphere and hydrosphere sciences; NATURVETENSKAP Geovetenskap Atmosfärs- och hydrosfärsvetenskap;

    Abstract : Atmospheric particles are ubiquitous in the Earth’s atmosphere and have potential to influence atmospheric chemistry, visibility, global climate and human health, particularly downwind from major pollution sources. The main objective of this thesis was to investigate questions pertaining to the microphysical, chemical and optical properties of aerosol particles by using in situ data collected during four experiments carried out in different regions of the Northern Hemisphere. READ MORE