The twin field experiments C-SWOT-2023 and WEMSWOT were carried out in March-April 2023 and aimed to support the new-generation SWOT altimeter (NASA/CNES) calibration and validation. This satellite provides a measurement of sea surface elevation and rugosity with unequalled space-time coverage, particularly during its intensive observation phase from March to June 2023. The originality of this field experiments is the mobilisation of two researc [...]