Search for dissertations about: "polar mesospheric clouds"
Showing result 1 - 5 of 6 swedish dissertations containing the words polar mesospheric clouds.
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1. Mesospheric measurements using microwave spectroscopy
Abstract : The mesosphere is an altitude region of the atmosphere, covering altitudes between about 50 km to 100 km. Improved understanding of this area of the atmosphere offers possibilities of increasing the accuracy of weather forecast and climate models. READ MORE
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2. Tomographic views of the middle atmosphere from a satellite platform
Abstract : The middle atmosphere is a very important part of the Earth system. Until recently, we did not realize the importance of the structure of this vaporous shell and of the fundamental role it plays in both creating and sustaining life on the planet. READ MORE
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3. Investigation of Polar Mesosphere Summer Echoes in Northern Scandinavia
Abstract : This PhD thesis deals with phenomena which are closely related to the unique thermal structure of the polar summer mesosphere, namely Polar Mesosphere Summer Echoes (PMSE). PMSE are strong radar echoes commonly observed by VHF MST radars from thin layers in the 80-90 km altitude interval at high latitudes during summer. READ MORE
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4. Multi-satellite views on mesospheric microphysics and dynamics
Abstract : Atmospheric gravity waves of different scales and origins strongly modulate the wind field and temperature structure of the higher parts of the atmosphere. Direct and continuous measurements of these processes are particularly complicated in the mesosphere at about 50 to 100 km height due to the remote location of this region. READ MORE
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5. Rocket-borne in situ measurements in the middle atmosphere
Abstract : The Earth's mesosphere and lower thermosphere in the altitude range 50-130 km is a fascinating part of our atmosphere. Complex interactions between radiative, dynamical, microphysical and chemical processes give rise to several prominent phenomena, many of those centred around the mesopause region (80-100 km). READ MORE