This module provides a deeper understanding of atmospheric physics and chemistry, and begins by laying the foundations with the physical properties of the atmosphere and how they affect the movement of air. A major objective is to bring familiarity with meteorological analyses and forecasts. The module covers topics varying from small scale flow in the atmospheric boundary layer affecting pollutant transport to global scale circulation of the atmosphere including important phenomena such as monsoons and El Niño.
Practical sessions and a field trip to the Hazelrigg meteorological station will enable students to gain familiarity with mid-latitude synoptic systems, cyclones and fronts. This is built on by giving students sufficient knowledge about the chemical composition of the Earth's atmosphere, of the fluxes of C, S and N to and from the atmosphere and of the main chemical processes that occur in the atmosphere to allow them to understand how the Earth's atmosphere 'works' chemically within the framework of physical process already covered.
Successful completion of this module will show evidence of students’ ability to describe the structure and behaviour of the atmosphere with reference to meteorological observations and pathways of atmospheric transport from analysis of meteorological charts, in addition to the range of skills required to draw schematic diagrams of the general tropospheric circulation, whilst identifying the major processes (and underlying forces) that drive this circulation. Students will gain knowledge of the methods necessary to calculate atmospheric quantities, such as potential temperature, and use the results of these calculations to describe the state of the atmosphere. Students will also be equipped with the level of understanding needed to list the components of the unpolluted troposphere, including the trace gases of chemical significance, and draw annotated schematic diagrams of the atmospheric cycles of carbon, nitrogen, and sulphur.