Search for dissertations about: "atmospheric waves"

Showing result 1 - 5 of 55 swedish dissertations containing the words atmospheric waves.

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

    Author : Matthias Mohr; Sergej Zilitinkevich; Leif Enger; Dieter P. Eppel; Uppsala universitet; []
    Keywords : 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;

    Abstract : 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. READ MORE

  4. 2. Fluxes and Mixing Processes in the Marine Atmospheric Boundary Layer

    Author : Erik Olof Nilsson; Anna Rutgersson; Harm Jonker; Uppsala universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; Waves; Growing sea; Swell; Marine boundary layer; Air-sea interaction; Mixing; Momentum flux; Wind stress; Flux attenuation; Sensor separation; Large eddy simulation; Multiresolution analysis; Coupling; Wave model; Climate model; Wave age; Meteorology; Meteorologi;

    Abstract : Atmospheric models are strongly dependent on the turbulent exchange of momentum, sensible heat and moisture (latent heat) at the surface. Oceans cover about 70% of the Earth’s surface and understanding the processes that control air-sea exchange is of great importance in order to predict weather and climate. READ MORE

  5. 3. Mean Wind and Turbulence Conditions in the Boundary Layer above Forests

    Author : Johan Arnqvist; Hans Bergström; Anna Rutgersson; Stefan Söderberg; Søren Larsen; Uppsala universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Wind power; Forest; Turbulence; Waves; Spectra; Wind model; Atmospheric stability; Vindkraft; Skog; Turbulens; Vågor; Spektra; Modell; Atmosfärisk stabilitet;

    Abstract : As wind turbines have grown, new installation areas become possible. Placing wind turbines in forested landscapes introduce uncertainties to the wind resource estimation. READ MORE

  6. 4. Introducing Surface Gravity Waves into Earth System Models

    Author : Lichuan Wu; Anna Rutgersson; Erik Sahlée; Peter Janssen; Uppsala universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Surface gravity waves; Air-sea interaction; Earth-System Model; Atmospheric mixing; Upper-ocean turbulence; Meteorologi; Meteorology;

    Abstract : Surface gravity waves alter the turbulence of the bottom atmosphere and the upper ocean. Accordingly, they can affect momentum flux, heat fluxes, gas exchange and atmospheric mixing. However, in most state-of-the-art Earth System Models (ESMs), surface wave influences are not fully considered or even included. READ MORE

  7. 5. On the Arctic Boundary Layer : From Turbulence to Climate

    Author : Thorsten Mauritsen; Gunilla Svensson; Joao Teixeira; Stockholms universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Atmospheric boundary layers; Turbulence; Stable stratification; Gravity waves; Mesoscale motion; Arctic climate; Meteorology; Meteorologi; atmosfärvetenskap; Atmospheric Sciences;

    Abstract : The boundary layer is the part of the atmosphere that is in direct contact with the ground via turbulent motion. At mid-latitudes the boundary layer is usually one or a few kilometers deep, while in the Arctic it is much more shallow, typically a few hundred meters or less. READ MORE