Sökning: "troposphere"

Visar resultat 16 - 20 av 62 avhandlingar innehållade ordet troposphere.

  1. 16. GNSS Radio Occultation Inversion Methods and Reflection Observations in the Lower Troposphere

    Författare :Thomas Sievert; Mats Pettersson; Viet Thuy Vu; Blekinge Tekniska Högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; GNSS Radio Occultation GNSS-RO ;

    Sammanfattning : GNSS Radio Occultation (GNSS-RO) is an opportunistic Earth sensing technique where GNSS signals passing through the atmosphere are received in low Earth orbit and processed to extract meteorological parameters. As signals are received along an orbit, the measured Doppler shift is transformed to a bending angle profile (commonly referred to as bending angle retrieval), which, in turn, is inverted to a refractivity profile. LÄS MER

  3. 17. Satellite measurements and climate modelling of water in the tropical upper troposphere

    Författare :Marston Sheldon Johnston; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Model; Satellite; Climate; Humidity; Radiation; Tropics;

    Sammanfattning : The International Panel on Climate Change (2007) has identified key areas of uncertainty with regards to future climate change, e.g., the upper troposphere. A portion of the uncertain- ties come from climate models and this makes model accuracy very important. LÄS MER

  4. 18. Numerical and airborne experimental studies of aerosol and cloud properties in the troposphere

    Författare :Johan Ström; Stockholms universitet; []
    Nyckelord :;

    Sammanfattning : .... LÄS MER

  5. 19. Impact of Rossby waves on ozone distribution and dynamics of the stratosphere and troposphere

    Författare :Grigory Nikulin; Sheila Kirkwood; Ulrike Langematz; Umeå universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Meteorology; ozone; wave activity; trends; Brewer-Dobson circulation; Rossby waves; Arctic Oscillation; low ozone events; Meteorologi; Meteorology; Meteorologi; Meteorology; meteorologi;

    Sammanfattning : Several physical mechanisms concerning the impact of Rossby waves on ozone distribution and circulation in the stratosphere and troposphere are studied in the thesis.Summertime total ozone variability over Middle Asia and Northern Scandinavia shows similar wave-like behaviour with typical periods of 10-20 days and amplitudes of 20-50 Dobson units. LÄS MER

  7. 20. On the photochemistry of ozone in the stratosphere and troposphere and pollution of the stratosphere by high-flying aircraft

    Författare :Paul J. Crutzen; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES;

    Sammanfattning : .... LÄS MER