Explore planet Earth in near-real time   A slideshow of images available in the MIRAVI website. MIRAVI, short for MERIS Images RApid VIsualisation, tracks Envisat around the globe, generates images from the raw data collected by Envisat’s optical instrument, MERIS, and provides them online within two hours.   Envisat captured this image of large forest fires in Siberia on 24 July 2006 with its MERIS (Medium Resolution Imaging Spectrometer) instrument while working in Full Resolution mode to provide a spatial resolution of 300 metres.   Plankton bloom off the coast of Norway, acquired on 10 June 2006 by Envisat's MERIS - an instrument optimised to detect ocean colour.   A virtually cloudless image of Madagascar, acquired by Envisat's MERIS on 21 May 2006. Release date: 1 March 2012