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首页> 外文期刊>Ocean Engineering >Inter-comparisons of SWAN hindcasts using boundary conditions from WAM and WWIII for northwest and northeast coasts of India
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Inter-comparisons of SWAN hindcasts using boundary conditions from WAM and WWIII for northwest and northeast coasts of India

机译：使用WAM和WWIII的边界条件对印度西北和东北海岸进行的SWAN后cast之间的比较

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摘要

In this study, we present the inter-comparison of regional SWAN hindcasts using boundary conditions (BC) from the third generation wave models WAM and WWIII implemented globally. Here, SWAN inter-comparison studies with outputs of both global models as well as SWAN results using BC from both WAM and WWIII were carried out for selected months of the year 2000, 2008, 2009 and for the full year 2011 using ERA-40, QuikSCAT/NCEP Blended and OSCAT winds. The results of this experimental simulations/hindcasts suggests that SWAN hindcasts for both the northwest coast as well as northeast coastal model domains in the present model setups were found to be different, and can be considered better than the deep water model outputs such as WAM and WWIII, implemented globally. The comparison between SWAN hindcasts using WAM BC and SWAN hindcasts using WWIII BC revealed high correlations. However, the Percentage Error in the hindcast results of SWAN using WAM BC were found to be generally higher by 5-15% by considering most of the case studies presented in this investigation. Further, the validation results using in-situ and altimeter measurements suggest that SWAN using WAM BC can be an effective means of obtaining more accurate nearshore wave predictions.
机译：在这项研究中，我们使用全球实施的第三代波浪模型WAM和WWIII的边界条件（BC），介绍了区域SWAN后向预报的相互比较。在这里，针对2000年，2008年，2009年和2011年全年的选定月份，使用ERA-40，使用WAM和WWIII的BC对全球模型的输出以及SWAN结果进行了SWAN比对研究， QuikSCAT / NCEP混合风和OSCAT风。该实验模拟/后向预报的结果表明，在当前模型设置中，西北海岸和东北沿海模型域的SWAN后向预报均不同，并且可以认为比深水模型输出（例如WAM和第二次世界大战，在全球范围内实施。使用WAM BC的SWAN后播与使用WWIII BC的SWAN后播之间的比较显示出高度相关性。但是，考虑到本研究中介绍的大多数案例研究，发现使用WAM BC进行SWAN后播结果中的百分比误差通常会提高5-15％。此外，使用原位和高度计测量的验证结果表明，使用WAM BC的SWAN可以成为获得更准确的近岸波浪预测的有效手段。

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