Projecting changes in explosive cyclones and high waves around Japan using a mega-ensemble projection

Projecting changes in explosive cyclones and high waves around Japan using a mega-ensemble projection
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使用大型整体投影来预测日本周围爆炸性气旋和巨浪的变化

DOI:
10.1016/j.oceaneng.2021.109634
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发表时间:
2021
期刊:
影响因子:
5
通讯作者:
Mori Nobuhito
Mori Nobuhito
中科院分区:
工程技术2区
文献类型:
--
作者:
Ninomiya Junichi;Taka Yuya;Mori Nobuhito

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本文利用包含50个60年当前气候实验和90个60年+4K未来气候实验的巨型集合投影数据(d4 PDF),评估了气候变化对爆发性气旋(EC)的影响。随后,我们评估了未来的变化,沿海灾害,由于高涌浪,称为Yorimawari波,造成强大的和停滞的EC日本各地。在未来气候条件下,经过日本海的EC数量增加,而经过太平洋的EC数量减少。EC最低中心气压(MCP)的年平均值没有变化,但未来10- 60年的概率值增加。在北海道附近停滞超过24 h的MCP为10年概率值的EC的d4 PDF风条件下进行了波浪模拟。最大有效波高的总体平均值沿日本海沿着从0.5米增加到1.0米。有效波周期增加0.25s以上。然而,标准差与未来变化的波高一样大。高浪的波高取决于EC的特性。
In this study, we evaluate the effect of climate change on explosive cyclones (ECs) using mega-ensemble projection data (d4PDF), which has 50 members of 60-years present climate experiments and 90 members of 60-years +4K future climate experiments. Subsequently, we evaluate the future change of coastal hazards due to high-swell waves, called Yorimawari waves, caused by strong and stagnant ECs around Japan. The number of ECs passing over the Sea of Japan increased, but the number passing over the Pacific Ocean decreased under future climate. The annual average of the minimum central pressure (MCP) of the EC did not change, but the 10- to 60-year probability value increased for the future. Wave simulations with the d4PDF wind conditions for ECs with an MCP of the 10-year probability value that stagnated for over 24 h around Hokkaido, were conducted. The ensemble average of the maximum significant wave height increased from 0.5 to 1.0 m along the Sea of Japan. The significant wave period increased by over 0.25 s. However, the standard deviation was as large as the wave height of future change. The wave height of high waves depends on the characteristics of the EC.
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