Sökning: "orography"

Hittade 5 uppsatser innehållade ordet orography.

  1. 1. Investigating surface spring snow : Changes in the isotopic composition and conductivity along an orographic precipitation gradient in northern Fennoscandia

    Kandidat-uppsats, Umeå universitet/Institutionen för ekologi, miljö och geovetenskap

    Författare :Sara Andersson; [2023]
    Nyckelord :stable isotopes; snow; precipitation; hydrology; orography; earth science;

    Sammanfattning : Stable isotopes of oxygen (O18) and hydrogen (H2) are used as proxies of past climates when ice preserved in the polar icecaps. The main assumption when doing paleoclimatic reconstructions using these isotopes is that the isotopic composition of the snow that turned into ice reflect the present temperature of the planet during deposition. LÄS MER

  3. 2. Accuracy of EMD-WRF reanalyis for wind power estimations, using WindPRO

    Uppsats för yrkesexamina på avancerad nivå, Lunds universitet/Industriell elektroteknik och automation

    Författare :Mathieu Bruneau; [2020]
    Nyckelord :Wind power; wind speed estimation; reanalysis; Technology and Engineering;

    Sammanfattning : Developing wind farms is a long and costly task. Assessing the potential of a site is a major part of the development of a wind project. LÄS MER

  4. 3. A comparison of modelled precipitation in Greenland

    Kandidat-uppsats, Lunds universitet/Fysiska institutionen; Lunds universitet/Förbränningsfysik

    Författare :Rebecca Vesterberg; [2017]
    Nyckelord :Greenland; precipitation; Surface mass balance; SMB; ice sheet; accumulation; ablation; sea level rise; Regional Climate Model; HIRHAM5; Numerical Weather Prediction model; HIRLAM7.3; biases; climate change; Physics and Astronomy;

    Sammanfattning : The Greenland ice sheet develops throughout the year with the changing weather condi- tions. Precipitation contributes by increasing the mass, whilst warmth induces melting, which makes the ice sheet diminish. LÄS MER

  5. 4. Modelling the Formation and Propagation of Orographic Rossby Waves

    Kandidat-uppsats, Uppsala universitet/Luft-, vatten- och landskapslära

    Författare :Eskil Jonsson; [2017]
    Nyckelord :Global model; shallow fluid approximation; middle-high troposphere; potential vorticity conservation; Global modell; grund fluid approximation; mellan-övre troposfären; potentiell vorticitetsbevarande;

    Sammanfattning : Orographic Rossby waves are the main mechanism by which the jet streams meander aroundthe Earth and have possibly far-reaching impacts on weather and climate (chapter 1). Hence,they are of particular importance to study and this project should serve as a starting point inwhat to consider when trying to model these waves. LÄS MER

  7. 5. Comparison of optimization for non linear and linear wind resource grids

    Magister-uppsats, Institutionen för geovetenskaper

    Författare :Ion Dragoi; [2013]
    Nyckelord :Wind resource grid; Flat terrain; Boundary layer; Wind; WAsP; WindSim; WindPRO; Optimization; Linear and Nonlinear wind resources grid.;

    Sammanfattning : The aim of this thesis is to assess how the configuration of linear and non-linearwind resource grids impacts the optimization.Three different software tools are used for this study: WAsP (linear model) includedin WindPRO, and WindSim (a non-linear model) - a CFD tool, and WindPRO forthe optimization. LÄS MER