Maximum wave heights from global model reanalysis
Maximum wave heights from global model reanalysis
复制标题
全球模型再分析的最大波高
DOI：
10.1016/j.pocean.2019.03.009
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发表时间：
2019
影响因子：
4.1
通讯作者：
Benetazzo, Alvise
中科院分区：
文献类型：
--
作者：
Barbariol, Francesco;Bidlot, Jean-Raymond;Cavaleri, Luigi;Sclavo, Mauro;Thomson, Jim;Benetazzo, Alvise
巨大的海浪遍布世界各大洋，对海员和近海结构构成挑战，但由于观测不足和时间范围狭窄，难以对其进行长期和全球评估。具有高时空范围和分辨率的现代模式再分析数据集是这一范围的宝贵工具。在本文中，我们第一次使用再分析数据集，以提供一个长期的和全球的最大波参数，即波峰，波峰到波谷和包络线高度的统计评估。特别是，我们依赖于ERA-Interim方向波谱，用于估计波最大值的概率分布的参数。为了表示习惯的单点观测，我们使用时间极值统计模型，而考虑到三维几何形状和风暴海浪的短峰，统计模型扩展到时空。为了评估的再分析为基础的波最大值估计的准确性，我们验证他们对浮标和立体视频波观测收集在北太平洋。然后，我们提供了全球评估的最大波峰，波峰到波谷和包络线高度在典型和极端条件下，显示区域达到最大值，我们显示位于中纬度风暴带，特别是在北大西洋。相对于以前的波浪气候研究，只集中在显着的波高，在这项研究中，我们量化的最大波高范围，还突出了平均波陡和峰度（非线性措施）和频谱带宽（不规则性措施）的作用。除此之外，我们表明，贡献的短期是显着的，并考虑到它可能是相关的航行安全，船舶路由和海洋结构设计。
Very large waves populate world oceans and challenge seafarers and offshore structures, but their long-term and global assessment is uneasy because of the scarcity of observations and their narrow time-coverage. Modern model reanalysis datasets with high spatio-temporal extent and resolution represent a valuable tool for this scope. In this paper, we use for the first time reanalysis datasets to provide a long-term and global statistical assessment of the maximum wave parameters, namely crest, crest-to-trough and envelope heights. In particular, we rely on the ERA-Interim directional wave spectra that are used to estimate the parameters of the probability distributions of wave maxima. To represent the customary single-point observations we use time extreme statistical models, while to account for the three-dimensional geometry and short-crestedness of stormy ocean waves, the statistical models are extended to space-time. In order to evaluate the accuracy of the reanalysis-based wave maxima estimates we verify them against buoy and stereo-video wave observations gathered in the North Pacific Ocean. We then provide the global assessment of maximum crest, crest-to-trough and envelope heights during typical and extreme conditions, showing the regions attaining the largest values, which we show are located in the mid-latitude storm belts, in particular in the North Atlantic Ocean. With respect to previous wave climate studies that focused on the significant wave height only, in this study we quantify the maximum wave height extent, also highlighting the role of mean wave steepness and kurtosis (measures of nonlinearity) and spectral bandwidth (measure of irregularity). Beside this, we show that the contribution of the short-crestedness is significant and that taking it into account may be relevant for the safety of navigation, ship routing and marine structural design.
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影响因子：
3.6
作者：
Cavaleri, Luigi;Barbariol, Francesco;Wedi, Nils
通讯作者：
Wedi, Nils
影响因子：
3.5
作者：
Fedele, Francesco
通讯作者：
Fedele, Francesco
海洋气象站 P 的波浪和平衡范围
DOI：
--
发表时间：
2013
期刊：
影响因子：
--
作者：
J. Thomson;E. D’Asaro;M. Cronin;W. Rogers;R. Harcourt;A. Shcherbina
通讯作者：
A. Shcherbina
从船基立体视频系统观察到的尖顶破碎表面波
影响因子：
3.5
作者：
M. Schwendeman;J. Thomson
通讯作者：
J. Thomson
时空波极端：海洋气象力的作用
影响因子：
3.5
作者：
F. Barbariol;A. Benetazzo;S. Carniel;M. Sclavo
通讯作者：
M. Sclavo