Evaluation of submesoscale variability by glider missions and high-resolution numerical experiments in the Gulf of Finland, Baltic Sea

This study delves into the role of submesoscale processes within a stratified coastal environment, using three months of high-resolution glider data and a realistic simulation with the SMS permitting grid spacing of 0.125 nautical miles. Here are presented three glider data sets used in this study. Missions were carried out in May–June 2018 and 2019, and July–August 2019, during which an autonomous underwater vehicle, the Slocum G2 Glider MIA, collected oceanographic data along predefined transects. In May–June 2018, an 18 km long transect was sampled 26 times, and in 2019, 4.5 and 5.5 km long transects were sampled over 90 times. Altogether over 12,000 profiles were gathered. The raw data was quality controlled, and the coefficients to account for the response time of the sensors and the thermal lag were defined to minimize differences between two consecutive CTD profiles. The half YOs were bin-averaged to a uniform 0.5 dbar vertical grid and arranged as profiles.