Search for dissertations about: "stratospheric ozone"
Showing result 1 - 5 of 28 swedish dissertations containing the words stratospheric ozone.
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1. Calibration and quality assessment of DESCARTES : grabsampler for stratospheric tracers
Abstract : DESCARTES is a light-weight, balloon-borne grab sampler for stratospheric long-lived tracers developed at the University of Cambridge. 33 flights have been performed with two versions of the instrument at northern latitudes by the DESCARTES team at the Swedish Institute of Space Physics (IRF) in Kiruna during the years 1997-2000. READ MORE
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2. Impact of Rossby waves on ozone distribution and dynamics of the stratosphere and troposphere
Abstract : 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. READ MORE
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3. Validation and time series analysis of global stratospheric data sets
Abstract : The depletion of ozone from the stratosphere and the impact of global warming have been identified as phenomena caused as a result of anthropogenic activity. Scientists are thus trying to find quicker and more reliable ways to analyse these environmental problems. READ MORE
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4. Future stratospheric ozone depletion will affect a subarctic dwarf shrub ecosystem
Abstract : The stratospheric ozone depletion and the concomitant increase in ultraviolet-B (UV-B, 280-320 nm) radiation is of global concern due to the effects of UV-B on living organisms. To investigate the effects of increased levels of UV-B, a field irradiation system was established at a subarctic dwarf shrub heath in Northern Sweden (68 °N). READ MORE
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5. Decadal analysis of stratospheric ozone depletion using data assimilation and Odin/SMR measurements
Abstract : Serious ozone depletion has been measured every Antarctic spring since the early 80’s. This ozone depletion is considered to be a result of photo-chemical reactions and catalytic cycles resulting from anthropogenic halogen containing gases. facilitated by the formation of Polar Stratospheric Clouds (PSCs). READ MORE