Optimization method for calculating tide peak position based on ROMS simulation result

Abstract

The invention relates to an optimization method for calculating the position of a tidal front based on an ROMS simulation result, and the method comprises the following steps: obtaining a formula forcalculating the tidal front under the condition of considering a surface layer wind friction effect, a bottom layer tidal current friction effect, a net heat flux effect and a buoyancy advection effect; calculating to obtain an action item A of the underlying tide to the peak; calculating to obtain an action item B of the surface wind field to the front; calculating to obtain an action item C of the net heat flux to the peak; calculating to obtain an action item M of the buoyancy advection to the sharp point, and performing back calculation processing on the calculation of the M items in orderto simplify the calculation process and reduce M errors at the same time; calculating to obtain the position Hfront of the tide front; subtracting the terrain water depth Hdepth output by the ROMS mode from the position depth Hforward of the tidal front to obtain a difference value delta H, and taking the place where delta H is zero as the real position of the tidal front in the ocean.

Description

technical field [0001] The invention belongs to the field of marine science, and in particular relates to an optimization method for calculating tidal front positions based on ROMS simulation results. Background technique [0002] Tidal front is a kind of ocean front, which refers to the transitional sea area between the near-shore mixed zone and the far-shore stratified zone formed by the combined action of tidal mixing and stratification in the warming season. It is of great significance to explore the formation and change mechanism of hypoxia. Surface wind friction, bottom tidal mixing, net heat flux, buoyancy advection, etc. all have an impact on the formation and location of tidal fronts. According to the Simpson-Hunter stratification parameter K, most scholars SH =log(H / U max 3 ) has calculated the position of the tidal front, but the Simpson-Hunter stratification parameter only considers the influence of terrain and tidal currents on the position of the tidal fron...

AI Technical Summary

Problems solved by technology

According to the Simpson-Hunter stratification parameter K, most scholars SH =log(H / U max 3 ) has calculated the position of the tidal front, but the Simpson-Hunter stratification parameter only considers the influence of terrain and tidal currents on the position of the tidal front, and does not take into account other factors that affect the position of the tidal front, so it cannot be calculated more accurately location of tidal front

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