SEA ICE RETRIEVAL FROM CRISTAL: DESIGN, DEVELOPMENT AND VALIDATION ...

• Main Authors: Scagliola, Michele, Bouffard, Jerome, Cipollini, Paolo
• Format: Conference Object
• Language: unknown
• Published: CNES 2023
• Subjects: Arctic; Southern Ocean; Sea ice
• Online Access: https://dx.doi.org/10.24400/527896/a03-2023.3723; https://ostst.aviso.altimetry.fr/programs/abstracts-details.html?tx_ausyclsseminar_pi2[objAbstracte]=3723&cHash=X

The Copernicus Polar Ice and Snow Topography Altimeter (CRISTAL) is a satellite system developed as part of the European Union Copernicus program expansion activities. Main objective of the CRISTAL mission design is to measure and monitor variability of Arctic and Southern Ocean sea ice thickness and its snow depth. Built on the heritage of CryoSat, the CRISTAL instrument technical solution is based on a dual-frequency synthetic-aperture radar altimeter with interferometric capabilities at Ku-band and a second Ka-band frequency. Additionally CRISTAL will carry a passive microwave radiometer to support atmospheric corrections and surface-type classification. The characteristics of the CRISTAL instrument will lead to improved geophysical estimates: (i) an increased precision for sea ice freeboard and along-track resolution, exploiting the open-burst chronogram and the FFSAR processing on-ground, (ii) across-track leads detection capability by interferometric acquisitions and (iii) snow thickness retrieval by ...