A Dynamic Flight Model for Slocum Gliders and Implications for Turbulence Microstructure Measurements

• DOI: 10.1175/jtech-d-18-0168.1
• Publication Date: 2019-01-09T21:51:17Z
• Authors: Lucas Merckelbach; Anja Berger; Gerd Krahmann; Marcus Dengler; Jeffrey R. Carpenter
• Keywords: 13. Climate action; 01 natural sciences; 7. Clean energy; 0105 earth and related environmental sciences

Abstract The turbulent dissipation rate ε is a key parameter to many oceanographic processes. Recently, gliders have been increasingly used as carrier for microstructure sensors. Compared conventional ship-based methods, glider-based observations allow long-duration measurements under adverse weather conditions and at lower costs. incident water velocity U an input the calculation of rate. Since cannot be measured using standard glider sensor setup, normally computed from steady-state flight model. As scales with U2 or U4, depending on whether it temperature shear microstructure, respectively, model errors can introduce significant bias. This study first use in situ flight, obtained profiling Doppler log electromagnetic current meter, test calibrate model, extended include inertial terms. previously suggested calibrated removes bias approximately 1 cm s−1 velocity, which translates roughly factor 1.2 estimates results further indicate that 90% are within 1.1 derived sensors probes, respectively. We outline range applicability