Conference Presentations

The Quasi-Biennial Oscillation (QBO) globally modulates the stratospheric Brewer-Dobson circulation (BDC) and as a consequence the distributions of key greenhouse gases (GHGs) such as stratospheric water vapor, ozone and aerosols. These GHGs, in turn, feedback on the Earth's radiation budget and surface climate. [...]

The quasi-biennial oscillation (QBO) of the stratospheric tropical winds influences the global circulation over a wide range of latitudes and altitudes. Although it has strong effects on surface weather and climate, climate models have large difficulties in simulating a realistic QBO, especially in the lower stratosphere. [...]

Atmospheric concentrations of the greenhouse gases carbon dioxide and nitrous oxide have increased substantially because of human activities. However, their sources in South Asia, which contribute strongly to the accelerating global growth of carbon dioxide and nitrous oxide, are poorly quantified. [...]

Analyses of the mesosphere and lower thermo-sphere suffer from a lack of global measurements. This isproblematic because this region has a complex dynamicstructure, with gravity waves playing an important role. [...]