Remote sensing processes and trends in the middle atmosphere

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The middle atmosphere is a region of the atmosphere extending from about 10 km altitude up to near the edge of space (about 85 km altitude). The stratosphere, which is the lowest part of the middle atmosphere, has become an important area of research because changes in the nature of the stratosphere are coupled to changes at the Earth's surface that effect our daily lives. We will study satellite measurements of the atmosphere to investigate the processes and trends that take place in the stratosphere. In particular, we will use measurements from the Canadian OSIRIS satellite instrument. These measurements, which essentially cover the globe every day, can be used to detect the amount and vertical structure of ozone, clouds, and aerosols, which in this context may be small liquid droplets or particles of dust, smoke or ice.