Sökning: "Atmospheric dispersion"

Visar resultat 1 - 5 av 31 avhandlingar innehållade orden Atmospheric dispersion.

  1. 1. Dispersion modelling of volcanic emissions

    Författare :Adam Dingwell; Rutgersson Anna; David Simpson; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; dispersion modelling; atmospheric; volcano; gas emissions; volcanic ash; FLEXPART; FLEXPART-WRF; Spridningsmodellering; atmosfär; vulkan; gasutsläpp; vulkanaska; FLEXPART; FLEXPART-WRF; Meteorology; Meteorologi;

    Sammanfattning : Gases and particles released by volcanoes pose a serious hazard to humans and society. Emissions can be transported over long distances before being reduced to harmless concentrations. Knowing which areas are, or will be, exposed to volcanic emissions is an important part inreducing the impact on human health and society. LÄS MER

  3. 2. Mesoscale Simulations of Atmospheric Flow in Complex Terrain

    Författare :Matthias Mohr; Sergej Zilitinkevich; Leif Enger; Dieter P. Eppel; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Meteorology; Mesoscale modeling; Flow in complex terrain; Atmospheric dispersion; Model comparison; Boundary conditions; Numerical modeling; Atmospheric pressure; Gravity waves; Meteorologi; Meteorology; Meteorologi; Meteorology; meteorologi;

    Sammanfattning : The MIUU mesoscale model was further developed, in order to include information on large-scale atmospheric fields from global or regional atmospheric climate- and weather-prediction models. For this purpose, a new lateral boundary condition was developed and implemented into the model. LÄS MER

  4. 3. Atmospheric Dispersion Modellingof Volcanic Emissions

    Författare :Adam Dingwell; Anna Rutgersson; Björn Claremar; Robertson Lennart; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Meteorology; Meteorologi;

    Sammanfattning : Gases and particles released by volcanoes pose a serious hazard to humans and society. Emis-sions can be transported over long distances before being reduced to harmless concentrations.Knowing which areas are, or will be, exposed to volcanic emissions is an important part inreducing the impact on human health or society. LÄS MER

  5. 4. On the lifecycle of aerosol particles : Sources and dispersion over Scandinavia

    Författare :Peter Tunved; Hans-Christen Hansson; Johan Ström; Douglas Nilsson; Urs Baltensperger; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; aerosols; Meteorology; Meteorologi;

    Sammanfattning : Aerosol particles are likely important contributors to our future climate. Further, during recent years, effects on human health arising from emissions of particulate material have gained increasing attention. LÄS MER

  7. 5. Computational fluid dynamics for dispersion calculation in urban surroundings

    Författare :Jan Burman; Anna Rutgersson; Sven-Erik Gryning; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; CFD; RANS; LES; Toxicological effects; Synthetic boundary conditions; Stable boundary layer.; Meteorologi; Meteorology;

    Sammanfattning : Increased knowledge on dispersion processes in urban environment will enhance the ability in the society to handle events where releases of toxic substances can occur. Also, the ability to increase preparedness at locations where such events potentially can emerge. LÄS MER