Sökning: "Meteorologi"

Visar resultat 6 - 10 av 277 avhandlingar innehållade ordet Meteorologi.

  1. 6. Radiative transfer in the absorption bands of oxygen : Studies of their significance in ozone chemistry and potential for aerosol remote sensing

    Författare :Gijs Koppers; Knut Stamnes; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Meteorology; Meteorologi; meteorologi; Meteorology;

    Sammanfattning : Among the scientific topics of greatest public interest are the ozone question and climatic change. The discovery of the Antarctic ozone hole in 1985 and recognition of large scale ozone depletions in the northern hemisphere focused the world's attention on human induced changes in the atmosphere. LÄS MER

  3. 7. On errors in meteorological data assimilation

    Författare :Magnus Lindskog; Erland Källen; Nils. Gustafsson; Florence Rabier; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Meteorology; Meteorologi; meteorologi; Meteorology;

    Sammanfattning : Data assimilation in Numerical Weather Prediction (NWP) optimally blends observations with atmospheric model data in order to obtain the best possible initial state for an atmospheric model prediction. Specification of error characteristics is an important part of data assimilation. LÄS MER

  4. 8. Observations of water vapour in the middle atmosphere

    Författare :Stefan Lossow; Jörg Gumbel; Jacek Stegman; Daniel R. Marsh; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; water vapour; mesosphere; stratosphere; dynamics; Odin satellite; limb sounding; microwave; tropics; polar winter; Meteorology; Meteorologi; meteorologi; Meteorology;

    Sammanfattning : Water vapour is the most important greenhouse gas and plays a fundamental role in the climate system and for the chemistry of the Earth's atmosphere. This thesis presents observations of water vapour in the middle atmosphere with a particular focus on the mesosphere. LÄS MER

  5. 9. Atmospheric DMS in the High Arctic

    Författare :Jenny Lundén; Gunilla Svensson; Caroline Leck; Leonor Tarrason; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; DMS; Modelling; Arctic; Meteorology; Meteorologi; meteorologi; Meteorology;

    Sammanfattning : During the Arctic summer when the anthropogenic influence is limited, the natural marine source of sulfur in the form of gas-phase dimethyl sulfide viz. DMS(g), is of great importance for cloud formation. LÄS MER

  7. 10. Sampling uncertainties in ensemble weather forecasting

    Författare :Linus Magnusson; Erland Källén; Jonas Nycander; Jan Barkmeijer; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Ensemble forecasting; Initial perturbation techniques; Meteorology; Meteorologi; meteorologi; Meteorology;

    Sammanfattning : The aim of ensemble weather forecasting is to provide probability forecasts for the occurrence of meteorological events. The ensembles are constructed by assembling several forecast realisations, each member of the ensemble being constructed to sample the uncertainties in the forecast. LÄS MER