Upgrade of the Chilean Wave Atlas database

IF 3.1 3区地球科学 Q2 METEOROLOGY & ATMOSPHERIC SCIENCES

Ocean Modelling Pub Date : 2024-11-19 DOI:10.1016/j.ocemod.2024.102456

Sebastian Omar Correa Araya , Catalina Aguirre , Diego Becerra , Mauricio Molina , Pablo Vilchez , Sergio Bahamóndez

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引用次数: 0

Abstract

The Chilean Wave Atlas (AOC1), a reliable hindcast developed in 2017 for the academic and engineering community, diminished its usefulness due to the obsolescence of wind data provided by ERA-Interim reanalysis. This study presents the calibration and validation of a new wave hindcast forced using hourly winds data from ERA5 reanalysis. A total of 24 simulations were conducted: 15 using the semi-empirical ST4 parameterization and 9 using the observed-based ST6 parameterization, both implemented in WaveWatch III. Model results were compared with in-situ wave data from buoys along the Chilean coast. Generally, the ST4 physics package demonstrated superior performance with minimal variability in error statistical parameters between simulations. However, the observed-based ST6 parameterization produced the best results for simulating wave direction. By defining a multi-criteria performance score, the optimal model configuration was selected, and a new hindcast was generated for the period between 1979 and 2022. This hindcast includes hourly fields of significant wave height, mean and peak wave period, and mean and peak wave direction for the Pacific Ocean, as well as 72 locations with directional spectra. The upgraded Chilean Wave Atlas (AOC3) significantly improves the performance of AOC1 when compared with satellite-derived wave heights along the Chilean coast. Furthermore, the AOC3 data show good performance compared to other freely available hindcasts.

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升级智利波浪图数据库

智利波浪图集（AOC1）是 2017 年为学术和工程界开发的可靠后报，但由于 ERA-Interim 再分析提供的风数据过时，其实用性大打折扣。本研究利用ERA5再分析的每小时风数据，对新的波浪后报进行了校准和验证。共进行了 24 次模拟：15 次使用半经验 ST4 参数化，9 次使用基于观测的 ST6 参数化，这两种参数化均在 WaveWatch III 中实现。模拟结果与智利沿岸浮标的现场波浪数据进行了比较。总体而言，ST4 物理软件包性能优越，模拟结果之间的误差统计参数变化极小。不过，基于观测的 ST6 参数化在模拟波浪方向方面取得了最佳结果。通过多标准性能评分，选出了最佳模型配置，并生成了 1979 年至 2022 年期间的新后报。后报包括太平洋每小时的显著波高、平均和峰值波周期、平均和峰值波方向，以及 72 个地点的方向谱。升级后的智利波浪图集（AOC3）与智利沿岸的卫星波高相比，大大提高了 AOC1 的性能。此外，与其他免费提供的后预报相比，AOC3 数据显示出良好的性能。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Ocean Modelling 地学-海洋学

CiteScore

5.50

自引率

9.40%

发文量

审稿时长

19.6 weeks

期刊介绍： The main objective of Ocean Modelling is to provide rapid communication between those interested in ocean modelling, whether through direct observation, or through analytical, numerical or laboratory models, and including interactions between physical and biogeochemical or biological phenomena. Because of the intimate links between ocean and atmosphere, involvement of scientists interested in influences of either medium on the other is welcome. The journal has a wide scope and includes ocean-atmosphere interaction in various forms as well as pure ocean results. In addition to primary peer-reviewed papers, the journal provides review papers, preliminary communications, and discussions.