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Webinar: Strategies to improve quality and coverage of coastal sea level and sea state data
Tuesday, 30 May 2023, 1:00
Tuesday, May 30, 2023. 1:00 PM. Webinar: Strategies to improve quality and coverage of coastal sea level and sea state data. Marcello Passaro, Deutsches Geodätisches Forschungsinstitut, DGFI-TUM - München. Sponsored by NOAA. More information and link to webinar here.
Abstract: In this seminar, I will present my current research aimed at enhancing coastal sea level and significant wave height observations using satellite altimetry. I will begin by discussing my past and ongoing efforts to improve the along-track data, and how I am currently shifting my focus towards improving the spatial and temporal coverage of remote sensing data. Traditionally, along-track altimetry data are interpolated into daily grids using optimal interpolation, which involves multiple pre-processing steps and covariance characterization, resulting in smoothed grids. However, I will introduce a new approach that employs Random Forest Regression to estimate daily sea level anomalies, which is shown to better represent sea level variability at sub-annual time scales. By using along-track sea level data to build a training dataset, we can predict neighboring observations and improve the accuracy of our sea level maps. Throughout my presentation, I will demonstrate the potential of this new approach and its usefulness for coastal modelers. Furthermore, I will reflect on future improvements and prospects, inviting feedback and discussion points from the audience.