| Evaluation of the simulation capability of the Wavewatch Ⅲ model for Pacific Ocean wave |
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| 引用本文： | 毕凡,宋金宝,吴克俭,徐尧.Evaluation of the simulation capability of the Wavewatch Ⅲ model for Pacific Ocean wave[J].海洋学报(英文版),2015,34(9):43-57. |
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| 作者姓名： | 毕凡 宋金宝 吴克俭 徐尧 |
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| 作者单位： | 中国科学院海洋研究所, 海洋环流与波动重点实验室, 青岛 266071;浙江大学, 海洋学院, 杭州 310058,中国海洋大学, 海洋环境学院, 青岛 266100,浙江大学, 海洋学院, 杭州 310058;中国海洋大学, 物理海洋教育部重点实验室, 青岛 266003,中国科学院海洋研究所, 海洋环流与波动重点实验室, 青岛 266071 |
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| 摘 要： | Wave climate analysis and other applications for the Pacific Ocean require a reliable wave hindcast. Five source and sink term packages in the Wavewatch III model(v3.14 and v4.18) are compared and assessed in this study through comprehensive observations, including altimeter significant wave height, advanced synthetic aperture radar swell, and buoy wave parameters and spectrum. In addition to the evaluation of typically used integral parameters, the spectra partitioning method contributes to the detailed wave system and wave maturity validation. The modified performance evaluation method(PS) effectively reduces attribute numbers and facilitates the overall assessment. To avoid possible misleading results in the root mean square error-based validations, another indicator called HH(indicating the two authors) is also calculated to guarantee the consistency of the results. The widely used Tolman and Chalikov(TC) package is still generally efficient in determining the integral properties of wave spectra but is physically deficient in explaining the dissipation processes. The ST4 package performs well in overall wave parameters and significantly improves the accuracy of wave systems in the open ocean. Meanwhile, the newly published ST6 package is slightly better in determining swell energy variations. The two packages(ACC350 and BJA) obtained from Wavewatch III v3.14 exhibit large scatters at different sea states. The three most ideal packages are further examined in terms of reproducing waveinduced momentum flux from the perspective of transport. Stokes transport analysis indicates that ST4 is the closest to the NDBC-buoy-spectrum-based transport values, and TC and ST6 tend to overestimate and underestimate the transport magnitude, respectively, in swell mixed areas. This difference must be considered,particularly in air–wave–current coupling research and upper ocean analysis. The assessment results provide guidance for the selection of ST4 for use in a background Pacific Ocean hindcast for high wave climate research and China Sea swell type analysis.
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| 关 键 词： | Wavewatch Ⅲ 评估 太平洋 输入耗散源函数 波浪通量 Stokes输运 |
| 收稿时间： | 2014/10/31 0:00:00 |
| 修稿时间： | 2015/3/23 0:00:00 |
Evaluation of the simulation capability of the Wavewatch Ⅲ model for Pacific Ocean wave |
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| BI Fan,SONG Jinbao,WU Kejian and XU Yao.Evaluation of the simulation capability of the Wavewatch Ⅲ model for Pacific Ocean wave[J].Acta Oceanologica Sinica,2015,34(9):43-57. |
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| Authors: | BI Fan SONG Jinbao WU Kejian and XU Yao |
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| Institution: | Key Laboratory of Ocean Circulation and Waves, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China;College of Physical and Environmental Oceanography, Ocean University of China, Qingdao 266100, China,Ocean College, Zhejiang University, Hangzhou 310058, China,College of Physical and Environmental Oceanography, Ocean University of China, Qingdao 266100, China;Key Laboratory of Physical Oceanography (Ocean University of China), Ministry of Education, Qingdao 266003, China and Key Laboratory of Ocean Circulation and Waves, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China |
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| Abstract: | Wave climate analysis and other applications for the Pacific Ocean require a reliable wave hindcast. Five source and sink term packages in the Wavewatch Ⅲ model (v3.14 and v4.18) are compared and assessed in this study through comprehensive observations, including altimeter significant wave height, advanced synthetic aperture radar swell, and buoy wave parameters and spectrum. In addition to the evaluation of typically used integral parameters, the spectra partitioning method contributes to the detailed wave system and wave maturity validation. The modified performance evaluation method (PS) effectively reduces attribute numbers and facilitates the overall assessment. To avoid possible misleading results in the root mean square error-based validations, another indicator called HH (indicating the two authors) is also calculated to guarantee the consistency of the results. The widely used Tolman and Chalikov (TC) package is still generally efficient in determining the integral properties of wave spectra but is physically deficient in explaining the dissipation processes. The ST4 package performs well in overall wave parameters and significantly improves the accuracy of wave systems in the open ocean. Meanwhile, the newly published ST6 package is slightly better in determining swell energy variations. The two packages (ACC350 and BJA) obtained from Wavewatch Ⅲ v3.14 exhibit large scatters at different sea states. The three most ideal packages are further examined in terms of reproducing waveinduced momentum flux from the perspective of transport. Stokes transport analysis indicates that ST4 is the closest to the NDBC-buoy-spectrum-based transport values, and TC and ST6 tend to overestimate and underestimate the transport magnitude, respectively, in swell mixed areas. This difference must be considered, particularly in air-wave-current coupling research and upper ocean analysis. The assessment results provide guidance for the selection of ST4 for use in a background Pacific Ocean hindcast for high wave climate research and China Sea swell type analysis. |
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| Keywords: | Wavewatch Ⅲ evaluation Pacific Ocean source and sink term packages wave-induced flux Stokes transport |
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