A Parameterization Method of Significant Wave Height and Wave Period

Abstract

A significant wave height and wave period parameterization method comprises the following steps that 1. buoy data of five fixed buoy stations of JMA, satellite height meter significant wave height hs provided by AVISO and 1 degree * 1 degree reanalysis grid point data of sea surface 10 m wind speed are obtained, wind speed at observed height is converted into 10 m height wind speed U10, average wave height and an average wave period are converted into significant wave height hs and a significant wave period Tp; 2.based on a data mining technology, according to the proportion of 2 : 1 : 1, the five fixed buoy stations and data of height meter grid point information are divided into a training set, a verifying set ad a testing set, and data obtained through a 44008 station are only divided into a verifying set and a testing set according to the proportion of 1 : 1; and 3. the significant wave height parameterization method is established and verified.

Description

[0001] 1. Technical field [0002] The present invention relates to a parameterization method of significant wave height and significant wave period applicable to the sea area in the east of my country. Specifically, it seeks a method that can reasonably describe the influence of wave characteristics on sea surface roughness in the air-sea flux algorithm and atmospheric numerical prediction model. simplification method. [0003] 2. Background technology [0004] Important marine weather processes such as the growth of wind waves, storm surges, and atmospheric circulation are closely related to the momentum exchange of the air-sea surface, and the accurate determination of the momentum exchange of the air-sea surface mainly depends on: (1) a reasonable description of the dependence of the stability; (2 ) to accurately determine the roughness of sea surface wind speed. As a small-scale ocean motion phenomenon that exists at the interface between the atmosphere and the ocean, ocea...

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Problems solved by technology

However, since most of the observational data used in the above studies come from the North Atlantic, the North Sea, the Gulf of Mexico, and Hawaii, they cannot fully reflect the characteristics of the sea and air in the eastern waters of my country. Some other studies are based on theoretical derivation and laboratory data analysis. The results are widely used in my country. The applicability of the eastern sea area needs further verification

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