This document is the final report of SynSenPFT project carried out by a consortium led by Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research (AWI), with University Bremen (UB), Laboratoire [...] exploitation. 1.2. Acronyms and Abbreviations ATBD Algorithm Theoretical Base Document AWI Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research CCI Climate Change Initiative Chla Chl