Sökning: "middle atmospheric dynamics"

Visar resultat 11 - 13 av 13 avhandlingar innehållade orden middle atmospheric dynamics.

1. 11. Time series of mesospheric species measured using ground-based microwave spectrometry: Retrieval and Error estimation

   Författare :Ole Martin Christensen; Chalmers tekniska högskola; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; water vapour; carbon monoxide; retrieval; remote sensing; mesosphere; microwave spectrometry;

   Sammanfattning : As the human emission of greenhouse gases continue to increase, the atmosphere is changing. The mesosphere region is particularly interesting as the magnitude oftemperature change in this region is expected to be larger, than in the lower layers of the atmosphere. LÄS MER

3. 12. Numerical simulations of the isotopic composition of stratospheric water vapour and methane

   Författare :Martin Ridal; Cornelius Schiller; Stockholms universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; meteorologi; Meteorology;

   Sammanfattning : The middle atmosphere is an important area of the Earth's atmosphere, but our understanding of the dynamical and chemical processes in that region is still limited. Water vapour and methane both fulfil the requirements for tracers due to their long lifetimes and have frequently been used to study dynamical processes. LÄS MER

4. 13. O2 and OH airglow in the mesosphere through the lens of Odin/OSIRIS Infrared Imager

   Författare :Anqi Li; Chalmers tekniska högskola; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; Satellite limb observation; mesospheric ozone; photochemistry; airglow; atmospheric waves; mesosphere;

   Sammanfattning : Observing airglow emissions allows us to explore the chemical composition and dynamics of the upper mesosphere. The Odin satellite has routinely measured O2(a1∆g) and OH Meinel band airglow emissions from 2001 until 2015. In this thesis, the Odin/OSIRIS infrared imager data have been studied in some depth for the first time. LÄS MER