Sökning: "Meteorology"

Visar resultat 16 - 20 av 68 uppsatser innehållade ordet Meteorology.

  1. 16. Evaluation of high-resolution satellite precipitation products with ground-based measurements over Europe

    Kandidat-uppsats, Lunds universitet/Institutionen för naturgeografi och ekosystemvetenskap

    Författare :Svea Bertolatus; [2020]
    Nyckelord :Precipitation; satellite product evaluation; passive microwave; estimates; Europe; ground- based gauge data; Earth and Environmental Sciences;

    Sammanfattning : Determining water quantity of precipitation, spatially and temporally is fundamental for weather forecasting, applications in hydrology and meteorology, climate science and for agriculture and industry. Only satellite measurements from space are able to perform large-scale measurements covering both, ocean and land. LÄS MER

  3. 17. Nowcasting with Dynamic Factor Model and Real-Time Vintage Data: A financial market actor's perspective

    Master-uppsats, Lunds universitet/Matematisk statistik

    Författare :Filip Östlund; Marcel Attar; [2020]
    Nyckelord :Nowcasting; Macroeconomic Prediction; Dynamic Factor Model; DFM; Pseudo Real-Time Vintage data; U.S. GDP Growth Rate; Financial Market Actor; Mathematics and Statistics;

    Sammanfattning : We develop and examine a dynamic factor nowcasting model (DFM) from the perspective of a financial market participant. The first point of analysis is the examination of its performance. Unlike other papers, we evaluate with daily frequency so that the performance metric reflects a continuous nowcasting signal. LÄS MER

  4. 18. Verification of HARMONIE-AROME, ECMWF-IFS and WRF: Visibility and Cloud Base Height

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

    Författare :Elin Kindlundh; [2020]
    Nyckelord :HARMONIE-AROME; ECMWF-IFS; WRF; verification; visibility; cloud base height; HARMONIE-AROME; ECMWF-IFS; WRF; verifikation; sikt; molnbashöjd;

    Sammanfattning : Visibility and cloud base height are two important parameters within aviation meteorology and verification of operational numerical weather prediction (NWP) models with regard to these two parameters is therefore important. Visibility is often parameterized through an extinction coefficient, which is dependent on for example liquid or ice water content, however it also depends on the humidity, precipitation intensity and particle concentration. LÄS MER

  5. 19. Wind Forecasts Using Large Eddy Simulations for Stratospheric Balloon Applications

    Master-uppsats, Luleå tekniska universitet/Rymdteknik

    Författare :Ludvig Sjöberg; [2019]
    Nyckelord :Weather Research and Forecasting Model; Large Eddy Simulation; Microscale Meteorology;

    Sammanfattning : The launch of large stratospheric balloons is highly dependant on the meteorological conditions at ground level, including wind speed. The balloon launch base Esrange Space Center in northern Sweden currently uses forecasts delivered through the Swedish Meteorological and Hydrological Institute to predict opportunities for balloon launches. LÄS MER

  7. 20. Meteorologiska mätningar med drönare

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

    Författare :Christopher Greenland; [2019]
    Nyckelord :Drones; UAV; wind speed; wind direction; carbon dioxide; temperature; relative humidity; quadcopter; vertical profile; Drönare; UAV; vindhastighet; vindriktning; koldioxid; temperatur; relativ fuktighet; quadcopter; vertikal profil;

    Sammanfattning : Studien handlade om att belysa hur UAV:s kan komma till nytta i meteorologisk forskning och att ta reda på hur bra drönare är på att mäta meteorologiska storheter. Drönare, som också kallas UAV:s (Unmanned Aerial Vehicle) är mindre obemmanade luftfartyg som kan flyga autonomt eller fjärrstyras. LÄS MER