Envisat Ocean Altimeter Becoming Relevant for Mean Sea Level Trend Studies

This article deals with the recent improvements of the Global and Regional Mean Sea Level trend using Envisat data. It focuses on the methodology based on comparison with Jason-1, Jason-2, and in situ data and shows that Envisat is now getting more reliable for MSL studies, as a comparison reference for future missions. Notably, Jason-1/Envisat comparisons enabled to detect a weakness in the orbit standard solution, now improved for all altimetric missions including Jason-2.