The temporal and spatial variations in the Pacific wind and wave fields for the period 2002–2011

The temporal and spatial variations in the Pacific wind and wave fields for the period 2002–2011
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2002—2011年太平洋风浪场时空变化

DOI:
10.1007/s13131-017-1039-6
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发表时间:
2017-03
影响因子:
1.4
通讯作者:
Hai Lun He
Hai Lun He
中科院分区:
地球科学2区
文献类型:
--
作者:
Yao Xu;Fan Bi;Jinbao Song;Hai Lun He

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利用第三代波浪模式(WaveWatch III)分析了2002-2011年间太平洋风场和波浪场的时空变化。利用浮标数据对有效波高的模型性能进行了验证。结果表明,该海浪模式对太平洋有效波高的预报效果较好,但在中低纬地区误差较大。在将太平洋划分为五个区域后,分析了太平洋风速和有效波高的空间分布和时间变化,表现出经向差异和季节循环。区域平均值用于给出每个单独区域的年平均时间序列。在模式结果中,南半球的高纬度地区比其他纬度地区有更强的显著波高趋势。然后对波能的源和汇进行了研究。它们的区域平均值被用来量化面波的变化。最后,给出了日平均风速和有效波高的谱分析。有效波高和风速谱在某些方面存在联系,但也表现出一定的差异。
The temporal and spatial variations in the wind and wave fields in the Pacific Ocean between 2002 and 2011 are analyzed using a third-generation wave model (WAVEWATCH III). The model performance for a significant wave height is validated usingin situbuoy data. The results show that the wave model effectively hindcasts the significant wave height in the Pacific Ocean, but the errors are relatively large in the mid- and low-latitude regions. The spatial distributions and temporal variations in a wind speed and the significant wave height in the Pacific Ocean are then considered after dividing the Pacific Ocean into five regions, which show meridional differences and seasonal cycles. Regional mean values are used to give yearly average time series for each separate zone. The high latitude region in the Southern Hemisphere had a stronger significant wave height trend in the model results than regions at other latitudes. The sources and sinks of wave energy are then investigated. Their regional mean values are used to quantify variations in surface waves. Finally, the spectral analyses of the daily mean wind speeds and the significant wave heights are obtained. The significant wave height and the wind speed spectra are found to be connected in some ways but also show certain differences.
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