Editing and Validation of Altimetry Water Surface Height Measurements over Rivers and Lakes
Event: 2016 Ocean Surface Topography Science Team Meeting
Session: Science III: Two decades of continental water's survey from satellite altimetry - From nadir low-resolution mode to SAR altimetry, new perspectives for hydrology
Presentation type: Type Poster
Contribution: PDF file
Though the quality of their measurements over hydrological areas is significantly lower than over oceans, the existing altimetry data, allows a massive live and historical access to a wide network of information.
We developed an algorithmic approach to produce an as exhaustive as possible database of Water Surface Height (WSH) virtual gauges combining the SRTM land/water mask and high-resolution altimetry. Assessing the quality of our database and providing WSH uncertainty estimations is a major concern, we therefore propose a methodology to edit and validate these numerous records based on intra-mission, inter-mission and in situ comparisons.