submesoscale modelling figures data at Changjiang River

This item shows submesoscale modelling figures data used at manuscript 'Tidal Modulation of Submesoscale Dynamics in the Yangtze River Estuary'.

The model domain spans the entire Yangtze River estuary (29.5°N-32°N, 120°E-124°E), with a horizontal resolution of approximately 1 km and 50 vertical coordinate levels. The simulation incorporates 16 tidal constituents and uses 6-hourly climatological atmospheric forcing from the European Centre for Medium-Range Weather Forecasts (ECMWF) operational model analysis as surface boundary conditions.

The model is two-way nested from the climatological simulation of China's marginal seas described by Sun et al. (2019), which has been well-validated against various observational datasets. The monthly climatological mean discharges of the Yangtze River and Qiantang River are incorporated into the model. Following a 20-year spin-up, the model reached a state of equilibrium. To assess the effects of tidal forcing on submesoscale dynamics, we conducted two sets of simulations: one with tidal forcing and one without. The tidal and non-tidal analyses utilize hourly and daily outputs over the month of August, respectively.