@article{fdi:010068186,
  title = {{A}n {ERS}-2 altimetry reprocessing compatible with {ENVISAT} for long-term land and ice sheets studies},
  author = {{F}rappart, {F}. and {L}egresy, {B}. and {N}ino, {F}ernando and {B}larel, {F}. and {F}uller, {N}. and {F}leury, {S}. and {B}irol, {F}. and {C}almant, {S}t{\'e}phane},
  editor = {},
  language = {{ENG}},
  abstract = {{S}atellite altimetry has demonstrated a strong potential for the continuous monitoring of ocean, ice sheets and land surfaces over the last 25 years. {W}hile instrument processing and retracking techniques of the radar echoes improved over the years for ocean applications to produce homogeneous products for all satellite altimetry missions, less effort has been devoted to applications over land. {E}uropean {S}pace {A}gency ({ESA}) continues improving the quality of {ENVISAT} data over all type of surfaces through frequent reprocessing of altimeter corrections. {N}o similar effort was performed for the {ERS} missions until recently with the release of the {ESA} {ERS} {REAPER} product mostly devoted to ocean applications. {I}n parallel, {C}entre de {T}opographie des {O}ceans et de l'{H}ydrosphere ({CTOH}) processed the {ERS}-2 waveforms ({WAP} data) with a new implementation of the {I}ce-2 retracker algorithm, adding improvements and corrections to make {ERS}-2 data compatible and homogenous with the {ENVISAT} mission for continuity and long-term altimetry data analysis over land and ice sheets. {T}he resulting product is evaluated against {ENVISAT} data during the tandem phase when they flew 30 min apart on the same orbit during 10 cycles of the two missions from {J}une 2002 to {J}uly 2003. {M}aps of along-track differences averaged over the 10 cycles of the tandem phase and associated {RMSE} are presented over ocean, both {A}ntarctica and {G}reenland ice sheets and land along with time series of altimetry backscattering coefficients and altimetry-based water levels. {S}imilar comparisons were performed between {ENVISAT} and {ERS}-2 {REAPER} data. {L}ow bias and {RMSE} values for altimeter heights and backscattering were found between {ENVISAT} and {ERS}-2 over ocean and flat areas over land and ice sheets with generally better results obtained using {CTOH} data. {C}omparisons with in situ water stages also show good agreement for {I}ce-2 and especially {I}ce-1 retracicers derived water levels ({R} > 0.95).},
  keywords = {{A}ltimetry ; {ERS}-2 ; {ENVISAT} ; {A}ltimeter height ; {A}ltimeter backscattering ; {I}ce-2 retracker ; {MONDE} ; {ANTARCTIQUE} ; {GROENLAND}},
  booktitle = {},
  journal = {{R}emote {S}ensing of {E}nvironment},
  volume = {184},
  numero = {},
  pages = {558--581},
  ISSN = {0034-4257},
  year = {2016},
  DOI = {10.1016/j.rse.2016.07.037},
  URL = {https://www.documentation.ird.fr/hor/fdi:010068186},
}