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In orbit since 1999, Terra is one of NASA's longest-running satellite missions. Its five instruments collect an array of Earth observation data that helps researchers explore and understand the interconnected systems that govern Earth's climate, and how changes to these systems affect the health of the planet.

Type

Earth Observation Satellite

Data Center

ASDC
LP DAAC
NSIDC DAAC

Launch

December 18, 1999

Objective

Monitoring interactions between land, atmosphere, oceans, and biology
Instrument NameOperational Date(s)Spectral ResolutionType of Instrument
Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER)19990.52 - 0.86 µm Very Near Infrared (VNIR), 1.600 - 2.430 µm Short-Wave Infrared (SWIR), 8.125 - 11.65 µm Thermal Infrared (TIR)Imaging Spectrometer/Radiometer
Clouds and Earth's Radiant Energy System (CERES)19990.3-5 µm (SW), 0.3-200 µm (TOT) and 8-12 µm (WN) channelsRadiometer
Multi-Angle Imaging SpectroRadiometer (MISR)1999Four spectral bands: blue, green, red, and near-infrared. The center wavelength of each of these bands is 446, 558, 672, and 867 nanometers respectivelyImaging Spectrometer/Radiometer
Moderate-Resolution Imaging Spectroradiometer (MODIS)199936 spectral bands ranging in wavelength from 0.4 µm to 14.4 µmImaging Spectrometer/Radiometer
Measurements of Pollution In The Troposphere (MOPITT)1999near-infrared radiation at 2.3 µm and thermal-infrared radiation at 4.7 µmProfiler/Sounder

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