QA shows baseline: RP01 (May 2014)

The REAPER product data set is a result of a complete reprocessing in 2014 of ESA's 12 year archive of ERS-1 and ERS-2's Altimetry data to produce:

20-Year Altimeter Record (ERS-1, ERS-2 and ENVISAT)

ERS-1, ERS-2 and ENVISAT provide a 20 year global altimetry record. Each mission overlapped its predecessor, allowing cross-calibration of the altimetry data to a single reference mission. Use of the new REAPER data set and the latest ENVISAT RA-2 products allows the full 20 year altimetry set to be compared for the first time.

ERS-1 operated in a number of different orbital configurations (phases). ERS-2 and ENVISAT operated primarily with a 35-day repeat cycle.

Phase Dates Cycle Numbering

on behalf of ESA