First of a series of satellites to study water circulation systems in the Earth's atmosphere; July 2012 took up lead position in A-Train.
"Support Geographical Information Systems, environmental, agricultural and oceanographic monitoring. There may also be a miltary/strategic imaging role."
Carries Synthetic Aperture Radar (SAR) sensor
"Cartographic imaging satellite capable of stereoscopic Earth photography, equipped with orbit adjustment engine to maintain height against air drag."
Land survey satellite.