Jason-2/OSTM takes over and continues Topex/Poseidon and Jason-1 missions in 2008, in the frame of a cooperation between Cnes, Eumetsat, Nasa and Noaa. It carries the same kind of payload than its two predecessors, for an high-accuracy altimetry mission: a Poseidon-class altimeter, a radiometer and three location systems. The orbit is also the same.
The Jason-2 payload includes the next generation of Poseidon altimeter (Poseidon-3, with the same general characteristics than Poseidon-2, but with a lower instrumental noise, an algorithm enabling a better tracking over land and ice, and the Doris location system. The accuracy should be of about 2.5 cm on the altimeter measurements.
Three new instruments (T2L2, LPT, Carmen-2) are moreover onboard, to study radiations in the satellite environment (LPT, Carmen-2), and to measure a laser path delay. Besides their scientific interest, these instruments should allow to enhance data quality and accuracy.
From 2008 to Oct.2016, Jason-2 is located on its nominal orbit. From Oct.2016 (at the end of cycle 303), after more than 8 years of service on this nominal ground track, Jason-2 swifted to the interleaved orbit that was used by Topex from 2002-2005 and Jason-1 from 2009-2012.
- Data: Real-time, near-real time, delayed-time