A Global View on the Wind Sea and Swell Climate and Variability from ERA-40
A Global View on the Wind Sea and Swell Climate and Variability from ERA-40
复制标题
DOI：
10.1175/2010jcli3718.1
复制
发表时间：
2011-03-01
影响因子：
4.9
通讯作者：
Sterl, Andreas
中科院分区：
文献类型：
--
作者：
Semedo, Alvaro;Suselj, Kay;Sterl, Andreas
本文根据欧洲中期天气预报再分析中心(ERA-40)45年的波浪再分析资料，给出了风海和涌浪参数的详细全球气候学资料。从波场能量平衡和波场特征两个方面，研究了地球海洋隆起优势的空间格局。统计分析表明，全球海洋以涌浪为主。分析了太平洋、大西洋和印度洋风海和涌浪显著波高的年际变化，以及它们与由此产生的显著波高的关系。风、海和海浪变化的主要模式显示出明显的差异，特别是在太平洋和大西洋。在北半球冬季，大西洋出现了一种强烈的南北涌浪传播模式。在北太平洋和北大西洋，风-海和海浪高度在统计上有显著的长期增加。
In this paper a detailed global climatology of wind-sea and swell parameters, based on the 45-yr European Centre for Medium-Range Weather Forecasts Re-Analysis (ERA-40) wave reanalysis is presented. The spatial pattern of the swell dominance of the earth's oceans, in terms of the wave field energy balance and wave field characteristics, is also investigated. Statistical analysis shows that the global ocean is strongly dominated by swell waves. The interannual variability of the wind-sea and swell significant wave heights, and how they are related to the resultant significant wave height, is analyzed over the Pacific, Atlantic, and Indian Oceans. The leading modes of variability of wind sea and swell demonstrate noticeable differences, particularly in the Pacific and Atlantic Oceans. During the Northern Hemisphere winter, a strong north south swell propagation pattern is observed in the Atlantic Ocean. Statistically significant secular increases in the wind-sea and swell significant wave heights are found in the North Pacific and North Atlantic Oceans.