@article{fdi:010081071,
  title = {{T}he {X}-{TRACK}/{ALES} multi-mission processing system : new advances in altimetry towards the coast},
  author = {{B}irol, {F}. and {L}eger, {F}. and {P}assaro, {M}. and {C}azenave, {A}. and {N}ino, {F}ernando and {C}alafat, {F}. {M}. and {S}haw, {A}. and {L}egeais, {J}. {F}. and {G}ouzenes, {Y}. and {S}chwatke, {C}. and {B}enveniste, {J}.},
  editor = {},
  language = {{ENG}},
  abstract = {{I}n the context of the {ESA} {C}limate {C}hange {I}nitiative project, a new coastal sea level altimetry product has been developed in order to support advances in coastal sea level variability studies. {M}easurements from {J}ason-1,2&3 missions have been retracked with the {A}daptive {L}eading {E}dge {S}ubwaveform ({ALES}) {R}etracker and then ingested in the {X}-{TRACK} software with the best possible set of altimetry corrections. {T}hese two coastal altimetry processing approaches, previously successfully validated and applied to coastal sea level research, are combined here for the first time in order to derive a 16-year-long ({J}une 2002 to {M}ay 2018), high-resolution (20-{H}z), along-track sea level dataset in six regions: {N}ortheast {A}tlantic, {M}editerranean {S}ea, {W}est {A}frica, {N}orth {I}ndian {O}cean, {S}outheast {A}sia and {A}ustralia. {T}he study demonstrates that this new coastal sea level product called {X}-{TRACK}/{ALES} is able to extend the spatial coverage of sea level altimetry data similar to 3.5 km in the land direction, when compared to the {X}-{TRACK} 1-{H}z dataset. {W}e also observe a large improvement in coastal sea level data availability from {J}ason-1 to {J}ason-3, with data at 3.6 km, 1.9 km and 0.9 km to the coast on average, for {J}ason-1, {J}ason-2 and {J}ason-3, respectively. {W}hen combining measurements from {J}ason-1 to {J}ason-3, we reach a distance of 1.2-4 km to the coast. {W}hen compared to tide gauge data, the accuracy of the new altimetry near-shore sea level estimations also improves. {I}n terms of correlations with a large set of independent tide gauge observations selected in the six regions, we obtain an average value of 0.77. {W}e also show that it is now possible to derive from the {X}-{TRACK}/{ALES} product an estimation of the ocean current variability up to 5 km to the coast. {T}his new altimetry dataset, freely available, will provide a valuable contribution of altimetry in coastal marine research community.},
  keywords = {{S}atellite altimetry ; {S}ea level ; {C}oastal ocean},
  booktitle = {},
  journal = {{A}dvances in {S}pace {R}esearch},
  volume = {67},
  numero = {8},
  pages = {2398--2415},
  ISSN = {0273-1177},
  year = {2021},
  DOI = {10.1016/j.asr.2021.01.049},
  URL = {https://www.documentation.ird.fr/hor/fdi:010081071},
}