An Intercomparison of Swan and Wavewatch III Models with Data from NDBC-NOAA Buoys at Oceanic Scales
An Intercomparison of Swan and Wavewatch III Models with Data from NDBC-NOAA Buoys at Oceanic Scales
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Swan 和 Wavewatch III 模型与海洋尺度 NDBC-NOAA 浮标数据的对比
DOI：
10.1142/s0578563408001739
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发表时间：
2008
影响因子：
2.4
通讯作者：
Aurelio Mercado
中科院分区：
文献类型：
--
作者：
J. C. Ortiz;Aurelio Mercado
利用SWAN模式对2002年6 ~ 8月北大西洋海盆的风浪活动进行了数值模拟。模拟结果与国家数据浮标中心获得的数据和NOAA的WAVEWATCH III（WW 3）波浪模型的结果进行了比较。本研究测试了SWAN模型在海洋尺度上的适用性。SWAN模式是为沿海地区开发的，但在版本（40.11）中，球坐标已被纳入海洋应用代码。结果发现，在一般情况下，WW 3产生一个更好的适合的观察比天鹅。即使在SWAN模拟中使用全球尺度WW 3结果作为边界条件，也可以得出相同的结论。由于使用了相同的风力强迫，我们可以得出结论，有效波高Hs的差异可能是由于风能转化为波能的方式及其在模型中因白浪而消散。WW 3 [Tolman和Chalikov，1996]中的风输入参数化比SWAN中使用的科门等人[1984]的参数化对风速相对快速变化的响应更好。虽然浮标观测和模型输出之间的比较往往有利于WW 3的SWAN在深水中，我们认为，易于使用的SWAN，连同简化提供的只需学习使用一个模型，使SWAN模型的一个很好的选择，模拟所有的方式从深水到附近的海岸。
A simulation of wind-wave activity in the North Atlantic Basin, between June to August of 2002, has been performed using the SWAN model. The results of the simulations were compared with data obtained from the National Data Buoy Center and the results from NOAA's WAVEWATCH III (WW3) wave model. This study tested the applicability of the SWAN model at oceanic scales. The SWAN model was developed for coastal areas, but in version (40.11), spherical coordinates have been included in the code for oceanic applications. It was found that, in general, WW3 produces a somewhat better fit to the observations than SWAN. The same conclusion holds even when global scale WW3 results were used as boundary conditions in the SWAN simulations. Since the same wind forcing was used, we could conclude that this difference in significant wave height, Hs , could be due to the way wind energy is transferred to wave energy and its dissipation due to whitecapping in the models. The wind input parameterization in WW3 [Tolman and Chalikov, 1996] shows a better response to relatively fast changes in wind speed than the parameterization of Komen et al. [1984] used in SWAN. Although comparison between buoy observations and model output tends to favor WW3 over SWAN in deep water, we argue that the ease of use of SWAN, together with the simplification offered by just having to learn to use one model, makes the SWAN model a good option for simulations all the way from deep water up to the near shore.