Sökning: "Ozone depletion"

Visar resultat 1 - 5 av 44 avhandlingar innehållade orden Ozone depletion.

  1. 1. Ozonskiktet och risksamhället : En studie av den svenska politiska diskussionen rörande ozonskiktet 1968-1992

    Författare :Mathias Martinsson; Jonas Anshelm; Linköpings universitet; []
    Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; Ozone layer; ozone depletion; CFC; environmental politics; risk society; ecological modernisation; reflexive modernisation; political use of scientific knowledge; ozonskiktet; miljöaspekter; miljöpolitik; historia; Sverige; 1968-1992; INTERDISCIPLINARY RESEARCH AREAS; TVÄRVETENSKAPLIGA FORSKNINGSOMRÅDEN;

    Sammanfattning : This thesis examines the development of the Swedish political discussion concerning the ozonelayer between 1968 and 1992. The analysis is based on the assumption that the threats against the ozone layer confronted the political system with an issue that called for new ways of thinking about environmental problems. LÄS MER

  3. 2. Future stratospheric ozone depletion will affect a subarctic dwarf shrub ecosystem

    Författare :Ulf Johanson; Biologiska institutionen; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Vaccinium; UVB; subarctic; shoot growth; ozone depletion; leaf thickness; irradiation system; heath ecosystem; Empetrum; dwarf shrubs; Calamagrostis; decomposition; Physiological biophysics; Växtfysiologi;

    Sammanfattning : 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). LÄS MER

  4. 3. A Study of Polar Ozone Depletion in the Lower Stratosphere. -Dynamical assimilation of O3 and N2O data from Odin/SMR and ENVISAT/MIPAS

    Författare :JOHN RÖSEVALL; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; SMR; O3; stratosphere; Odin; data assimilation; transport modelling; atmosphere; NO2; ozone depletion; MIPAS;

    Sammanfattning : For more than 20 years, a hole in the ozone layer has formed each spring over Antarctica when sunlight returns to the polar region. Similar albeit far less extensive ozone destruction has also been observed in the Arctic polar vortex after colder than average winters. LÄS MER

  5. 4. Decadal analysis of stratospheric ozone depletion using data assimilation and Odin/SMR measurements

    Författare :Kazutoshi Sagi; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; ozone loss; remote sensing; stratosphere; limb sounding; data assimilation;

    Sammanfattning : 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). LÄS MER

  7. 5. Analysis of stratospheric ozone depletion in the Arctic using a data assimilation technique

    Författare :Kazutoshi Sagi; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; data assimilation; ozone loss; limb sounding; remote sensing; stratosphere;

    Sammanfattning : 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 cat- alytic cycles resulting from anthropogenic halogen containing gases. LÄS MER