研究目的
Validating altimetry-derived sea surface heights (SSH) from Jason-3 and Sentinel-3A missions against tide gauge records along the French Atlantic coast in the southern Bay of Biscay.
研究成果
Jason-3 exhibits similar good performances as Jason-2 with R higher than 0.95 and RMSE lower than 0.37 m. Sentinel-3A shows better results with R higher than 0.98 and RMSE lower than 0.24 m, demonstrating the potential of SAR mode for accurate SSH estimates near the shore.
研究不足
The use of satellite altimetry in coastal zones remains challenging due to insufficient spatio-temporal resolutions and measurement limitations such as interactions between the radar signal and land topography.
1：Experimental Design and Method Selection:
Comparisons between in situ and altimetry-based SSH were performed using bias estimate, root means square errors (RMSE), and correlation coefficient (R).
2：Sample Selection and Data Sources:
Altimetry data from Jason-2, Jason-3, and Sentinel-3A missions and tide gauge records from seven locations along the French Atlantic coast.
3：List of Experimental Equipment and Materials:
Multi-mission Altimetry Processing Software (MAPS) for computing SSH.
4：Experimental Procedures and Operational Workflow:
SSH from altimeter was derived using MAPS, and comparisons with in situ SSH were performed.
5：Data Analysis Methods:
Bias, RMSE, and correlation coefficient were calculated for comparisons.
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