基于ECMWF的3个涌浪有效波高分量差异性研究

Study on the difference of three swell significant wave height partitions of ECMWF

涌浪有效波高是表征涌浪特征的重要参数之一,精确的涌浪有效波高对分析涌浪有着重要作用。欧洲中期天气预报中心(ECMWF)可提供全球范围内的涌浪有效波高参数,其中包括涌浪总的有效波高和3个不同的涌浪有效波高分量,而且这3个涌浪有效波高分量之间存在着明显的差异。为了分析ECMWF提供的涌浪有效波高的3个分量之间的差异性,本文对此展开研究。研究结果表明,在ECMWF提供的涌浪的3个有效波高分量中,涌浪有效波高第一分量在涌浪有效波高中占主要分量,其与涌浪总的有效波高之间的相关性整体在0.7~0.95,所占比重为75%~95%,而涌浪有效波高第二分量和第三分量在涌浪总的有效波高中所占的比重较小。

The significant wave height of swell is one of the important parameters to characterize the characteristics of swell.The accurate significant wave height of swell plays an important role in the analysis of swell.The European Centre for Medium-Range Weather Forecasts(ECMWF)can provide the global swell significant wave height parameters,including the total significant wave height of the swell and three different components of the significant wave height of the swell,and there are significant differences among the three components.In order to analyze the differences among the three components of swell significant wave height provided by ECMWF,this paper conducted research on this.The research results showed that among the three significant wave height partitions of the swell provided by ECMWF,the first partition of the significant wave height of the swell accounted for the main partition in the total significant wave height of the swell,and the correlation between the first partition and the total significant wave height of the swell was between 0.7~0.95,accounting for about 75%~95%,while the second partition and the third partition of the significant wave height of the swell accounted for a small proportion in the total significant wave height of the swell.