Sökning: "atmospheric stability"

Visar resultat 6 - 10 av 69 avhandlingar innehållade orden atmospheric stability.

  1. 6. Arctic clouds - interactions with radiation and thermodynamic structure

    Författare :Joseph Sedlar; Michael Tjernström; Annica Ekman; Johannes Verlinde; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Arctic; stratus; radiation; thermodynamic structure; cloud radiative forcing; seasonal transition; Meteorology; Meteorologi; atmosfärvetenskap; Atmospheric Sciences;

    Sammanfattning : Clouds play in important role in the climate system through their interaction with radiation. Globally, clouds tend to cool the Earth by reflecting solar radiation and shading the surface. LÄS MER

  3. 7. Wind Turbine Sound in Cold Climates

    Författare :Kristina Conrady; Anna Rutgersson; Karl Bolin; Sabine von Hünerbein; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; atmospheric acoustics; wind turbine sound; outdoor sound propagation; cold climates; Meteorology; Meteorologi;

    Sammanfattning : The increase in the number of wind turbines (WTs) in populated areas in cold climates increases the number of people potentially being affected by WT sound. Outdoor sound propagation is strongly dependent on meteorological conditions, however, limitations in the knowledge exist regarding the implications of meteorological conditions in cold climates. LÄS MER

  4. 8. Large Eddy Simulation of Non-Local Turbulence and Integral Measures of Atmospheric Boundary Layers

    Författare :Igor Esau; Frans Nieuwstadt; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Meteorology; Planetary boundary layers; large eddy simulations; non-local turbulence; Meteorologi; Meteorology; Meteorologi; Meteorology; meteorologi;

    Sammanfattning : A new large eddy simulation (LES) code is developed and used to investigate non-local features of turbulent planetary boundary layers (PBLs). The LES code is based on filtered Navier-Stokes equations, which describe motions of incompressible, Boussinesq fluid at high Reynolds numbers. LÄS MER

  5. 9. Change, stability, and atmospheric pollutant effects in European forest vegetation

    Författare :James Weldon; Sveriges lantbruksuniversitet; Sveriges lantbruksuniversitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES;

    Sammanfattning : While the “acid rain” of the 1980s caused widespread damage to forests, the sulphur emissions responsible have been much reduced since. However nitrogen emissions remain at concerning levels, and there are also questions about how well ecosystems recover even after air quality improves. LÄS MER

  7. 10. Urban Climate and Air Pollution in Ouagadougou, Burkina Faso

    Författare :Jenny Lindén; Göteborgs universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Sub-Saharan Africa; Sahel; semi arid; nocturnal cooling; urban vegetation; evening evaporative cooling; cooling rate; atmospheric stability; thermal wind; carbon monoxide; particulate matter; road dust; exposure differences;

    Sammanfattning : ABSTRACT Africa has recently been singled out by UN Habitat as the fastest urbanizing continent in the world. The most extreme case was found in the Sahelian city of Ouagadougou, Burkina Faso, where the population is expected to almost double over the next ten years. LÄS MER