On completion of this module you will:

• understand the chemical role of tropospheric NO₂;
• appreciate why we want to measure tropospheric NO₂;
• understand why and how we use satellite-borne spectrometers to measure tropospheric NO₂ on a global scale;
• understand the principles of radiative transfer in the atmosphere;
• understand the methods used to retrieve information about spatial concentrations of NO₂ from raw data comprising spectral measurements of transmitted, reflected and emitted light;
• be able to apply this knowledge to particular situations using computational techniques.