Sökning: "WRF model"

Visar resultat 16 - 19 av 19 uppsatser innehållade orden WRF model.

  1. 16. Evaluation and development of normal year correction methodologies for icing climatology in wind farm applications

    Magister-uppsats, Lunds universitet/Institutionen för energivetenskaper

    Författare :Rebecka Klintström; [2012]
    Nyckelord :ice modeling normal year correction icing of wind turbines mesoscale meteorological models; Technology and Engineering;

    Sammanfattning : Wind power developments in cold and icing conditions pose new challenges to the wind power industry. Icing of wind turbines cause safety hazards, production losses and increased loads. LÄS MER

  3. 17. Uncertainty Analysis of Long Term Correction Methods for Annual Average Winds

    Master-uppsats, Institutionen för fysik

    Författare :Rickard Klinkert; [2012]
    Nyckelord :Uncertainty; Long-term-correction; Measure-Correlate-Predict; Sector-Bin; Synthetic time series; Reference dataset; Weather observation stations; WRF; MERRA; QuikSCAT; NCEP FNL; Bootstrap; sampling; North Sea.; Osäkerhet; Measure-Correlate-Predict; årsmedelvind; Sektor-Bin; Syntetiska tidsserier; referensdataset; väderobservationsstationer; WRF; MERRA; QuikSCAT; NCEP FNL; Bootstrap; sampling; Nordsjön.;

    Sammanfattning : For the construction of a wind farm, one needs to assess the wind resources of the considered site location. Using reference time series from numerical weather prediction models, global assimilation databases or observations close to the area considered, the on-site measured wind speeds and wind directions are corrected in order to represent the actual long-term wind conditions. LÄS MER

  4. 18. Wind Speed Prediction using Global and Regional Based Virtual Towers in CFD Simulations

    Magister-uppsats, Institutionen för kultur, energi och miljö

    Författare :Roger Moubarak; [2011]
    Nyckelord :Global-Regional Global Model; Era Interim; StormGeo; WRF; ECMWF; Data Series; WindSim; Hindcast;

    Sammanfattning : Wind farm assessment is a costly and time consuming process when it is planned by traditional methods such as a met mast. Therefore, new models have been established and used for the wind farm assessment to ease the process of wind farm planning. These models are Global-regional models which add to cost efficiency and time saving. LÄS MER

  5. 19. Coupling of the Weather Research and Forecasting model (WRF) with the Community Multiscale Air Quality model (CMAQ), and analysing the forecasted ozone and nitrogen dioxide concentrations

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

    Författare :Sara Johansson; [2007]
    Nyckelord :air quality modelling; WRF; CMAQ; forecasts of ozone and nitrogen dioxide concentrations;

    Sammanfattning : Air quality forecasts are of great value since several pollutants in our environment effect both human health, global climate, vegetation, crop yields, animals, materials and acidification of forests and lakes. Air-quality forecasts help to make people aware of the presence and the quantity of pollutants, and give them a chance to protect themselves, their business and the Earth. LÄS MER