Envisat Altimetry Mission Status
Via Galileo Galilei CP64,
The Envisat satellite was launched on March 1, 2002. It carries on-board a new generation Radar Altimeter (RA-2), a Microwave Radiometer (MWR) and a DORIS receiver. The RA-2 instrument provides improved measurement performances and many new capabilities, which benefits the science and application community. With almost two decades of altimetric measurements acquired by ESA, long-term evolution of parameters playing a key role in climate change can now be addressed. This requires homogeneous data sets inter-calibrated at the millimetre level, supported by an accurate and permanent monitoring of the sensor performances and product quality.
Over the last ~4 years of operations, the Altimetry system (RA-2, MWR, DORIS) has been nominally operational, providing the user community with an altimetric data set of highly valuable quality. The status of the Altimetry mission in terms of sensors performances, algorithm and product evolutions shall be addressed.