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Wave climatology of Lake Erie based on an unstructured-grid wave model

机译：基于非结构网格波模型的伊利湖波动气候

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摘要

Hindcast of wave dynamics in Lake Erie during 2002 to 2012 was conducted using a state-of-art finite-volume coastal ocean surface wave model (FVCOM-SWAVE). After model calibration, the surface gravity wave dynamics were examined from the aspects of wave climate and seasonality, inter-basin wave interactions, as well as its potential susceptibility to regional climate change. Compared to the Central and Eastern Basins, the Western Basin has relatively gentle wave climate. The Western Basin and the nearshore areas are most susceptible to the wave-induced bottom orbital oscillations on the seasonal mean scale, and the offshore Central Basin is sensitive to them as well during episodic events. Profound seasonality was found in both mean and extreme wave dynamics during ice-free cycles. Mean significant wave height (SWH) is highest during fall with more occurrences of extreme events (SWH > 3.1 m) and is lowest during summer, which is controlled by wind speed and direction collectively. Besides, swells generated in the Central and Eastern Basins could interact with each other under various wind directions, whereas wave generated in the Central Basin could hardly propagate into the Western Basin. In addition, the regression analysis of surrounding meteorological stations indicates increasing SWH in the Western Basin and decreasing SWH in the Eastern Basin.
机译：使用最新的有限体积沿海海面波模型（FVCOM-SWAVE）对2002年至2012年伊利湖的波浪动力学进行了隐式预报。在模型校准之后，从波浪气候和季节，流域间波浪相互作用及其对区域气候变化的潜在敏感性等方面检查了表面重力波动力学。与中部和东部盆地相比，西部盆地的波浪气候相对温和。在季节性平均尺度上，西部盆地和近岸地区最容易受到海浪引起的底部轨道振荡的影响，而中部近海在偶发事件中也对它们敏感。在无冰周期的平均和极端波浪动力学中都发现了明显的季节性。平均显着波高（SWH）在秋季最高，发生更多极端事件（SWH> 3.1 m），而在夏季最低，这是由风速和风向共同控制的。此外，中部和东部盆地产生的涌浪可以在不同的风向下相互影响，而中部盆地产生的波浪几乎不会传播到西部盆地。此外，对周围气象站的回归分析表明，西部盆地的SWH升高而东部盆地的SWH降低。

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