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Instrument image

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.

Not Operational
Imaging multi-spectral radiometers (vis/IR)
Technical Characteristics
Ocean colour bands typical S:N = 1700
Spatial Resolution:
Ocean: 1040m x 1200 m, Land & coast: 260m x 300m
Swath Width:
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)
Earth Topics
Land ( Vegetation ), Ocean and Coast ( Ocean Colour/Biology ), Atmosphere ( Clouds/Precipitation )
Available Resources Type Access
MERS Instrument calibration Technical Document download
MERIS FAQ Technical Document link
MERIS and (A)ATSR Workshop 2005 Proceedings link
Reference Model for Meris Level 2 Processing Product Document download
Products Specifications Product Document link
MERIS Algorithm Theoretical Basis Document Technical Document download
Annex A - Product Data Conventions Product Document download