Method for calculating high-precision Chinese offshore sea wave characteristic distribution

Abstract

The invention relates to a method for calculating high-precision Chinese offshore sea wave characteristic distribution. According to the method, a meteorological model WRF, a large-area sea wave modelwavewatch 3 and a sea wave model swan used in the offshore area of China are combined, and a multi-year historical sea wave characteristic data product with the spatial resolution of 0.04 degree * 0.04 degree can be calculated. As the China offshore area is divided into the East China sea area and the South China sea area by considering the monsoon influence area and the wave propagation characteristics during model establishment. The western pacific ocean is prevented from being brought into a mode range, and computing resources are prevented from being consumed. Due to the fact that the twosea areas have the overlapping area, the overlapping area has two calculation results, a weighted average method is used, the calculation results of the two overlapping areas are integrated, and thewhole set of data has spatial continuity.

Description

technical field [0001] The invention relates to a calculation method for ocean waves in China's coastal waters based on wave models wavewatch3 and swan and a meteorological numerical model WRF, which is applicable to marine science, marine environment, and marine engineering industries, and belongs to the technical field of data science using numerical models to calculate data products. Background technique [0002] The characteristics of ocean waves that marine science and offshore engineering are generally concerned with include average wave height, swell height, average period, and average wave direction. At present, there are generally three ways to obtain the historical data of wave characteristics in China's coastal waters: [0003] 1. Obtain the observation data of the observation point through buoy observation; the best way to obtain wave data is to conduct on-site observation with the help of buoys. However, buoy observation is costly and laborious, and it is very ...

AI Technical Summary

Problems solved by technology

[0006] The technical problem solved by the present invention is: in the existing ocean wave data products, the observation data is discontinuous in time and space, and the observation points are too few; the public reanalysis products and the corresponding calculation products cannot be separated from wind waves and swell waves, and the spatial resolution is not high , offshore engineering hopes to achieve a resolution within 10 kilometers (0.1°)

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