MERIS is a programmable, medium-spectral resolution, imaging spectrometer operating in the solar reflective spectral range. Fifteen spectral bands can be selected by ground command.
The instrument scans the Earth's surface by the so called "push-broom" method. Linear CCD arrays provide spatial sampling in the across-track direction, while the satellite's motion provides scanning in the along-track direction.
MERIS is designed so that it can acquire data over the Earth whenever illumination conditions are suitable. The instrument's 68.5° field of view around nadir covers a swath width of 1150 km. This wide field of view is shared between five identical optical modules arranged in a fan shape configuration.
Imaging multi-spectral radiometers (vis/IR)
Ocean colour bands typical S:N = 1700
Ocean: 1040m x 1200 m, Land & coast: 260m x 300m
1150km, global coverage every 3 days
VIS-NIR: 15 bands selectable across range: 390 nm to 1040 nm(bandwidth programmable between 2.5 and 30 nm)
Land ( Vegetation ), Ocean and Coast ( Ocean Colour/Biology ), Atmosphere ( Clouds/Precipitation )
Latest Mission Operations News
28 February 2014
Due to a planned software installation, the MERCI web interface hosting the Envisat MERIS Full Resolution (FRS) data will be unavailable from 14:00 to 19:00 CET on Monday 3 March 2014.
Nominal service will resume as soon as the maintenance has been completed.
Related Data Types
Related (Key) Documentation