“MIRAVI stands for MERIS Images RApid VIsualization and it’s a data-driven system for real time image rendering and quality analysis. Those images, though fascinating, are not suitable for scientific use. Scientists usually prefer to work with MERIS data products, which fully exploit the 15 spectral bands of the instrument, and which are generated with sophisticated algorithms.
MIRAVI generates the images directly from the MERIS raw data (i.e. the Level 0 data), usually available within 2 hours from data acquisition, depending whether the raw data have been transmitted directly to ground stations, or first recorded onboard then transmitted to ground stations.
The MIRAVI image processing does not intend to provide a very accurate geolocation or calibration. The high geolocation accuracy is achieved within the standard MERIS data products (less than ½ pixels).
MIRAVI generates the images using the MERIS Full Resolution (FR) mode (resolution about 260 m) which is activated systematically over land and coastal areas of Europe, Africa and Asia, and non-systematically over America. In its Reduced Resolution (RR) mode (resolution about 1200 m), MERIS operates systematically along its orbit illuminated by the sun.”