Envisat was launched from an Ariane 5 in March 2002 by the European space station in Kourou (French Guyana). Envisat is the successor of the ERS satellites of the ESA and was built by a consortium of 50 companies under Astrium´s guidance. It adds the hitherto most extensive observations of the land masses, oceans, atmosphere and ice caps with its 10 instruments. Envisat helps scientists to better understand the influence of changes on our climate and among other things to provide answers to f questions such as: Is the ozone hole growing larger? To what extent do the greenhouse gases collect heat energy and hold it in the atmosphere? What is the position of the El-Nino current? What is the condition of the rainforest? How fast are the polar ice caps melting?
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