Validation of sar drifting buoy experiments using updated oceanographic models

Abstract

Accurate drift trajectory prediction is essential for effective search-and-rescue (SAR) operations. As part of the MEDOSMOSIS project, coordinated SAR exercises were conducted in the Med- iterranean in 2022. These exercises aimed to replicate realistic maritime emergency scenarios and assess the performance of existing operational systems. More than 30 drifting targets were deployed—including SVP and CODE drifters, life rafts, and hu- man-shaped dummies—and tracked via satellite for more tan a month. This study revisits those exercises using updated high-res- olution ocean models (CROCO and MITgcm configurations) that were not available at the time. Lagrangian simulations driven by these newer datasets are currently being used to reassess the observed drift trajectories. The methodology involves simulat- ing synthetic drifter paths and comparing them to real observa- tions to evaluate model skill over medium-range forecasts (36–72 hours). The study emphasizes the importance of using real-world SAR exercises to validate and improve forecasting tools. Final re- sults and comparisons will be presented at the workshop.