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How does climate change impact the wave regime in the western North Pacific? 


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Climate change impacts the wave regime in the western North Pacific by influencing the intensity and frequency of tropical cyclones (TCs) and the Pacific Decadal Oscillation (PDO) . The representation of extreme wave climate in climate models is improved when they accurately simulate TCs, leading to better projections of TC-generated waves . The North Pacific wave power and significant wave height have shown upward trends, especially in winter, influenced by storm intensification after the mid-1970s regime shift and the warm phase of the PDO . However, recent decreases in wave power and significant wave height are associated with the cool phase of the PDO . Future projections suggest a decrease in mean wave height and extreme wave height, but an increase in summer extreme wave height due to climate change . These changes have implications for coastal erosion, storm-surge flooding, and coastal planning .

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The paper does not provide a direct answer to the query. The paper discusses future changes in mean wave climate and the sensitivity of wave climate to sea surface temperature conditions, but it does not specifically address the impact of climate change on the wave regime in the western North Pacific.
The paper investigates the impact of climate change on the wave climate in the Western North Pacific, specifically focusing on tropical cyclone-generated extreme waves. The projected changes in the extreme wave climate are dominated by changes in TC-generated waves, with a large variation among models.

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