Decadal wave power variability in the North-East Atlantic and North Sea
Decadal wave power variability in the North-East Atlantic and North Sea
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DOI：
10.1002/2015gl064488
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发表时间：
2015-06-28
影响因子：
5.2
通讯作者：
Poulson, S.
中科院分区：
文献类型：
--
作者：
Santo, H.;Taylor, P. H.;Poulson, S.
估算波浪气候的长期行为对于以经济有效的方式利用波浪能至关重要。以前的研究已经将北大西洋的波浪高度与南北大气压力异常联系起来，表明波浪气候的波动是对大气纬向环流变化的响应。我们发现东北大西洋波浪能的变化与主导压力异常、北大西洋涛动（NAO）和其他模态密切相关。本文利用NAO和其他模态的已知指数和代理指数，重建了1665-2005年的波浪能气候。我们的重建显示出很高的年际和多年代际变化，这使得波能预测具有挑战性。在波浪能装置的任何长期可靠性分析和电力方案经济性分析中都应考虑这种可变性。
Estimation of the long-term behavior of wave climate is crucial for harnessing wave energy in a cost-effective way. Previous studies have linked wave heights to the north-south atmospheric pressure anomalies in the North Atlantic, suggesting that the wave climate fluctuates as a response to changes in zonal circulation in the atmosphere. We identify changes in wave power in the North-East Atlantic that are strongly correlated to the dominant pressure anomalies, the North Atlantic Oscillation (NAO), and other modes. We present a reconstructed wave power climate for 1665-2005, using a combination of known and proxy indices for the NAO and other modes. Our reconstruction shows high interannual and multidecadal variability, which makes wave energy prediction challenging. This variability should be considered in any long-term reliability analysis for wave energy devices and in power scheme economics.