Method and device for predicting effective wave height of sea waves based on 20CR data

Abstract

The invention discloses a method and a device for predicting effective wave height of sea waves based on 20CR data. The method comprises the steps of acquiring original data in the 20CR data, and carrying out data preprocessing on the original data; selecting a sea level pressure field meeting a preset condition; correcting a prediction model according to the data related to the sea level pressurefield in the data of a first age section in the 20CR data; assessing the prediction model according to the data of a second age section later than the first age section in the 20CR data; and after the assessment is passed, predicting the effective wave height of the sea waves by adopting the prediction model. According to the method and the device, the 20CR data jointly published by the United States Department of Energy and the National Oceanic and Atmospheric Administration in the United States is adopted; the time span exceeds the hundred years; and after the sea level pressure field meeting the preset condition is selected, the prediction model is corrected according to the data related to the selected sea level pressure field in the data of the first age section in the 20CR data, andmodel parameters are optimized, so that the accuracy of predicting the effective wave height of the sea waves is improved.

Description

technical field [0001] The invention relates to the field of sea wave parameter calculation, in particular to a method for predicting the significant wave height of sea waves based on data from the Twentieth Century Reanalysis Project (20CR). Background technique [0002] Ocean waves are the ocean phenomenon most directly and closely related to human beings, and have a non-negligible impact on people's production and life. For example, sea navigation, fishery production, offshore oil platforms, and offshore port channels are all closely related to ocean waves. [0003] Significant wave height is an important parameter to reflect the characteristics of ocean waves, so the prediction research of wave height has important practical significance. To predict the wave height of ocean waves, long-term and stable ocean wave observation data must first be obtained. However, although traditional observation methods such as buoys can accurately obtain information on changes in wave he...

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Problems solved by technology

However, 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. It is difficult to obtain continuous data for more than 20 years in the Chinese sea The buoy observation data of sea surface waves makes the predicted effective wave height of sea waves not accurate enough

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