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TERRA

TERRA – Earth Observing System (EOS)


The orbital platform TERRA was launched on December 18, 1999 on board the launch vehicle AtlasIIAS as part of the NASA program called Earth Observing System (EOS). It is a multinational mission that involves partnerships with aerospace agencies of Canada and Japan. The main goal is to contribute to research on global atmospheric dynamics and its interactions with the Earth's surface and ocean. 

TERRA platform contributes to research on:

  • a) atmosphere: radioactive energy flow, composition of the troposphere, aerosols, temperature and humidity, cloud cover;
  • b) land surface: changes in coverage and land use, vegetation dynamics, agriculture dynamics, surface temperature, occurrence of fires and volcanic events;
  • c) Oceans: Surface temperature, phytoplankton and dissolved organic matter. In polar regions the satellite obtains information about the changes in the ice cover of the Earth, the sea ice and snow cover.

The satellite data began to be collected in February 2000. On board the satellite are TERRA MODIS sensors, ASTER, CERES, MISR and MOPITT.

Basic Information

TERRA

SensorASTER, MODIS, MISR, CERES e MOPPIT
Operator / Responsible InstitutionNASA (National Aeronautics and Space Administration)
CountryEstados Unidos
Current SituationActivo
Launch12/18/1999
Altitude705 km
Inclination98,2°
OrbitPolar and Sun-Synchronous
SwathMODIS: 2.330 x 5.000 Km
Orbit Period98,1 min
Local Time09h / 11h / 22h / 23h
Revisit Time16 days
Spatial ResolutionMODIS: 250 m, 500 m, 1.000 m