Acronym for the Advanced Earth Observing Satellite to be launched by Japan in February 1996. It will be launched into a solar-synchronous sub-recurrent orbit in a recurrent period of 41 days at an altitude of about 800 km. The goal is to collect data appropriate for monitoring environmental changes such as global warming, ozone layer depletion, decrease in tropical rain forests, unusual weather occurences, etc. The instruments ADEOS will carry include AVNIR, ILAS, IMG, NSCAT, OCTS, POLDER, RIS, and TOMS.