A NASA polar-orbiting satellite, part of the Earth Observing System, the second to be launched (after the Terra satellite) on 4 May 2002. It is primarily designed to monitor the Earth's hydrological cycle, but is also monitoring aerosols, energy flux, phytoplankton, air, surface, and water temperatures, and vegetation cover. It is currently first in the Afternoon-Train satellite constellation. See also Aura; Calipso; Cloudsat; Orbiting Carbon Observatory; Parasol.
Subjects: Meteorology and Climatology — Astronomy and Astrophysics.