Search for dissertations about: "atmospheric effects"

Showing result 1 - 5 of 224 swedish dissertations containing the words atmospheric effects.

  1. 1. Wind Turbine Sound Propagation in the Atmospheric Boundary Layer

    University dissertation from Uppsala : Geotryckeriet

    Author : Olof Öhlund; Uppsala universitet.; [2014]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Wind turbine sound; atmospheric effects; outdoor sound propagation; refraction;

    Abstract : Wind turbines have grown both in size and number in the past decades. The taller turbines has made it possible to place them in forest areas which is fortunate for a country like Sweden with lots of forest. An issue with wind turbines is the sound they produce. The sound mainly comes from the rotor blades when they pass through the air. READ MORE

  2. 2. Atmospheric and oceanic circulation from a thermodynamic perspective

    University dissertation from Stockholm : Department of Meteorology, Stockholm University

    Author : Aitor Aldama Campino; Stockholms universitet.; [2019]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; Atmospheric circulation; Ocean circulation; Stream functions; Atmospheric Sciences and Oceanography; atmosfärvetenskap och oceanografi;

    Abstract : The climate system is continuously transporting and exchanging heat, freshwater, carbon and other tracers in different spatio-temporal scales. Therefore, analysing the system from a thermodynamic or biogeochemical framework is highly convenient. READ MORE

  3. 3. Improving the understanding of cloud radiative heating

    University dissertation from Stockholm : Department of Meteorology, Stockholm University

    Author : Erik Johansson; Stockholms universitet.; [2019]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; clouds; radiative effects; upper troposphere-lower stratosphere; atmospheric circulation; remote sensing; Atmospheric Sciences and Oceanography; atmosfärvetenskap och oceanografi;

    Abstract : Clouds play an essential role in regulating Earth’s radiation budget by reflecting and absorbing energy at different spectra. As they interact with radiation, they can radiatively heat or cool the adjacent atmosphere and the surface. READ MORE

  4. 4. Atmospheric circulation regimes and climate change

    University dissertation from Stockholm : Meteorologiska institutionen (MISU)

    Author : Jenny Brandefelt; Stockholms universitet.; [2005]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; atmospheric large-scale circulation; greenhouse gas forcing; climate sensitivity; NATURAL SCIENCES Earth sciences Atmosphere and hydrosphere sciences Meteorology; NATURVETENSKAP Geovetenskap Atmosfärs- och hydrosfärsvetenskap Meteorologi;

    Abstract : The Earth's atmosphere is expected to warm in response to increasing atmospheric concentrations of greenhouse gases (GHG). The response of the Earth's complex and chaotic climate system to the GHG emissions is, however, difficult to assess. In this thesis, two issues of importance for the assessment of this response are studied. READ MORE

  5. 5. Wind-wave interaction effects on offshore wind energy

    University dissertation from Department of Energy Sciences, Lund University

    Author : Ali Al Sam; Lund University.; Lunds universitet.; [2016-11]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; wind-wave; swell; atmospheric boundary layer; marine atmospheric boundary layer; atmospheric turbulence; Large-eddy simulation; actuator line; wind sea; offshore technology; wind energy; wind turbine; aerodynamic;

    Abstract : This thesis is devoted to the investigation of the impacts of fast moving ocean surface waves on the aerodynamics of offshore wind turbines. The impacts of non-locally generated waves (swell) on the Marine Atmospheric BoundaryLayer (MABL) and thereby on offshore wind turbine aerodynamics are studied numerically by using Large Eddy Simulations and the Actuator Line Method. READ MORE