Sökning: "vortex vatten"

Visar resultat 1 - 5 av 7 uppsatser innehållade orden vortex vatten.

  1. 1. NH Planetary-Scale Circulation in Troposphere and Stratosphere: A Spectral and Dynamical Perspective

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

    Författare :Michael Konrad Schutte; [2023]
    Nyckelord :jet stream; Rossby waves; polar vortex; spectral analysis; dynamic systems theory; sudden stratospheric warmings; strong polar vortex events; jetström; Rossbyvågor; polär virvel; spektralanalys; dynamisk systemteori; plötsliga stratosfäriska uppvärmingar; starka polvortexhändelser;

    Sammanfattning : Dynamic Systems Theory (DST) and spectral analysis are employed to study the tropospheric jet stream and the stratospheric polar vortex. The objective is to investigate the relationship between Rossby wave activity and inverse persistence and dimensionality of geopotential height at 250 hPa and 10 hPa, as these two dynamical indicators are expected to show a characteristic behavior of Rossby wave harmonics. LÄS MER

  3. 2. Polar mesoscale cyclones in ERA5 and CARRA

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

    Författare :Zhaohui Cheng; [2023]
    Nyckelord :polar mesoscale cyclones; polar lows; ERA5; CARRA;

    Sammanfattning : Polar mesoscale cyclones (PMCs) are low-pressure systems that form in polar regions. Their small size and short lifespan pose challenges for coarse resolution models in capturing PMCs and their associated air-sea mass and energy transfer. To address the influence of resolution on PMCs, a comparison between a higher resolution dataset (CARRA with 2. LÄS MER

  4. 3. Large-Scale Atmospheric Drivers of Extreme Temperature Anomalies During Springtime in the Arctic

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

    Författare :Linnea Barreng; [2022]
    Nyckelord :Meteorology; Temperature extremes; Arctic; Jet stream; Rossby waves; Spring; Meteorologi; Arktis; Extremväder; Jetström; Rossbyvågor; Vår;

    Sammanfattning : In this project warm extreme temperature events in the Arctic region during the spring months March, April and May were identified and analysed. In the analysis daily average NCEP reanalysis data from NOAA/OAR/ESRL PSL format was used. LÄS MER

  5. 4. Quasi-Biennial Oscillation och dess påverkan på klimatet i troposfären

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

    Författare :Nordvall Oliver; [2018]
    Nyckelord :Quasi-Biennial Oscillation; QBO; Climate; Polar Vortex; ENSO; TC; Holton-Tan Effect; Quasi-Biennial Oscillation; QBO; Klimat; Polarvirvel; ENSO; TC; Holton-Tan Effect;

    Sammanfattning : The Quasi-Biennial Oscillation (QBO) is the strongest phenomena influencing the stratopheric (~15-50 km height) circulation over the equator. QBO has two phases of downward propagating easterly and westerly winds, which has a total period of approximately 28 months and the phase is defined by the wind direction between the airpressure 25-50 hPa, which is roughly at a height of 30 km. LÄS MER

  7. 5. Effect of vortex-processed water on tomato (Solanum lycopersicum) plants

    Kandidat-uppsats, SLU/Horticulture (until 121231)

    Författare :Malin Vagnell; [2013]
    Nyckelord :hydroponic system; vortex process technology; VPT; water technology;

    Sammanfattning : This pilot study examined whether treatment with Vortex Process Technology (VPT) of the irrigation water used on tomato (Solanum lycopersicum) plants had any effect on plant growth. In a block experiment, with two blocks comprising 12 vases containing 1 L water and two tomato plantlets, treatment in which, nutrient solution was based on Vortex-treated water was compared with an control using untreated water. LÄS MER