CFOSAT/SWIM L2 2022 dataset

This study analyzed the wave spectrum data of the L2 level at a 10 ° incidence angle of the China France Oceanography Satellite Spectrometer in 2022 on a global scale. To ensure the reliability of experimental data, first, remove outliers and screen out pure sea surfaces without rain or land mask values; And obtain the wave observation unit (i.e. "box", hereinafter referred to as "wave cell") with all data parameters within the confidence interval; Secondly, in order to reduce the impact of spurious peaks in the measured data, boxes with effective wave heights greater than 1.2 meters and spectral peak wave numbers greater than 0.001 rad/m were selected. To facilitate comparison with the above spectra, wave elements with a difference of no more than 0.001 rad/m between the peak wave number and the wave number corresponding to the maximum spectral value were selected. Finally, a total of 119359 boxes were preliminarily selected based on the wind speed distribution. This study selected three types of inverse wave age ranges and corresponding wave steepness to classify the sea state of measured data: the average spectrum composed of measured data with the inverse wave age range of 0.8~0.9 represents fully developed wind waves; The average spectrum composed of measured data with a reverse wave age range of 0.9~1.1 characterizes mature wind waves; The average spectrum composed of measured data with inverse wave age<0.8 characterizes swells. Perform feature statistics on the corresponding wave parameters, compare and analyze the classified measured data with the Apel spectrum, Elfouhaily spectrum, and Goda spectrum, and obtain a comparison chart for this dataset.