MERIS, the Medium Resolution Imaging Spectormeter, is one of the insturments newly developed for Envisat. It measures solar radiation reflected form the Earth's surface and clouds in the visible and infra-red parts of the spectrum. MERIS will detect biophysical properties (e.g. Chlorophyll concentration) of the oceans and coastal water composition which are especially important in understanding the impact of human activities on the coastal environment. The MERIS data can also be interpreted as large scale maps, showing vegetation distribution, clouds and water vapour.
This programme is a documentary produced by Alcatel Espace, the prime contractor for the development of this insturment. It outlines the concept of MERIS and how this instrument functions using 3-D computer graphics to illustrate. It includes an English voiceover and no international sound.