Short time trend predicating method for sea wave significant wave height based on reanalysis data

Abstract

The invention relates to a short time trend predicating method for a sea wave significant wave height based on reanalysis data. The method is characterized by comprising the following specific steps that firstly, data of the sea wave significant wave height based on the reanalysis data and data of sea level pressure are collected; secondly, a sea level pressure matrix and a significant wave height matrix are built; thirdly, the anomaly of the SLP and the standard deviation of the anomaly are calculated; fourthly, main composition analysis is conducted on the anomaly of the SLP; fifthly, Box-Cox conversion is conducted on the data of the sea level pressure and the data of the sea wave significant wave height; sixthly, predicating factors of the sea wave significant wave height are obtained through calculation; seventhly, the predicating factors are substituted into a predicating model, and the optimal predicating factor is selected for predicating with F-statistics; eighthly, the short time trend of the sea wave significant wave height is calculated; ninthly, the value of the sea wave significant wave height is restored and stored into a lattice point mode file; tenthly, a short time trend chart of the sea wave significant wave height is drawn. According to the short time trend predicating method, the multi-time short time trend of the sea wave significant wave height can be forecasted, and the accuracy of forecasting the short time trend of the significant wave height is high.

Description

technical field [0001] The invention belongs to the technical field of ocean wave parameter forecasting, in particular to a short-term trend forecasting method for effective wave height of ocean waves based on reanalysis data. Background technique [0002] Waves have a non-negligible impact on people's production and life, such as sea navigation, coastal port construction, waterway engineering, fishery production, etc. are closely related to waves. In addition, the safety of offshore oil platforms is also closely related to sea waves. The significant wave height of ocean waves is an important parameter reflecting the characteristics of ocean waves, so it is of great practical significance to analyze and predict the trend of significant wave height of ocean waves. Although traditional observation methods such as buoys can accurately obtain information on changes in wave height, they can only obtain changes in fixed points, and the coverage is very limited. Currently, it is d...

AI Technical Summary

Problems solved by technology

Although traditional observation methods such as buoys can accurately obtain information on changes in wave height, they can only obtain changes in fixed points, and the coverage is very limited. Currently, it is difficult to obtain continuous data for more than 20 years Buoy observation data of sea surface waves

With the maturity of satellite remote sensing technology, satellite data are gradually being applied. Although the satellite data on sea wave height have a wide coverage, they are only the data of the past 20 years at most, which seriously restricts the research on the short-term trend of sea wave effective wave height. reliability

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