Calibration and Validation of TOPEX GDR-F Products
Event: 2022 Ocean Surface Topography Science Team Meeting
Session: Regional and Global CAL/VAL for Assembling a Climate Data Record
Presentation type: Type Oral
The original TOPEX Geophysical Data Record products were affected by altimeter instrument degradation and drifts in the radiometer path delay correction during the time of the mission. In addition, the standards for the models used to derive the sea-level time series are now considered obsolete. As a major upgrade, new so-called GDR-F products have been generated that benefit from significant improvements. In particular, the GDR-F products apply numerical retracking of the altimeter data, the end-of-mission radiometer calibration, and GDR-F standards for the auxiliary corrections. We present a summary of the evolutions applied to this product, and results from the calibration and validation of the product.