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The imprint of the ENSO activities on the South China Sea wave climate

机译：南海浪潮气候中的enso活动的印记

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摘要

Global warming is changing the global wave climate, making waves stronger. In this study, we find that the wave climate in the South China Sea (SCS) undergoes an intensifying trend under global warming background, by examining the ERA-5 wave reanalysis data over 1979-2018. Results show a significant increase in most of the SCS, of 0.2% per year in significant wave height (SWH) and 0.15% per year in wave period (WP), but there is no significant change in surface wind speed (WS), which may correspond to the weakening of the Asian monsoon. The increase of the swell is the main characteristic of wave climate change in the SCS. We further examined the possible factors to cause the increasing of SWH, and found that the frequency of gale events occurring in the SCS and its adjacent regions increased over study period. The more frequent gale events can explain the significant increasing tendency of the SWH in the SCS by causing the occurrence of swell. The increasing appearance of gale events is closely related to the intensification of El Nino/Southern Oscillation (ENSO). ENSO activities also can regulate the interannual variability of wave climate in the SCS through the surface wind. Therefore, ENSO activities play an important role in the change of wave climate in the SCS.
机译：全球变暖正在改变全球波浪气候，使海浪更强。在这项研究中，我们发现，南海（SCS）的波浪气候通过在1979 - 2018年期间检查ERA-5波雷分析数据，经历了全球变暖背景下的加剧趋势。结果显示大部分SC的大部分增加，每年0.2％，在波期（WP）中每年0.15％，但表面风速（WS）没有显着变化，这可以对应于亚洲季风的弱化。膨胀的增加是SCS中波浪气候变化的主要特征。我们进一步研究了导致SWH增加的可能因素，发现在SCS和其相邻区域中发生的大孔事件的频率在研究期内增加。通过导致膨胀的发生，更频繁的大焰事件可以解释SCS中SWH在SCS中的显着提高趋势。大孔事件的外观越来越多地与El Nino / Southern振荡（ENSO）的强化密切相关。 ENSO活动还可以通过表面风调节SCS中波浪气候的续变性。因此，ENSO活动在SCS中的波浪气候变化中发挥着重要作用。

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  • 来源
    《Ocean Dynamics》 |2020年第10期|1315-1323|共9页
  • 作者

    Xuechao Wang; Qin-Yan Liu; Dandan Sui; Dongxiao Wang;

  • 作者单位

    State Key Laboratory of Tropical Oceanography (LTO) South China Sea Institute of Oceanology Chinese Academy of Sciences Guangzhou China University of Chinese Academy of Sciences Beijing China;

    State Key Laboratory of Tropical Oceanography (LTO) South China Sea Institute of Oceanology Chinese Academy of Sciences Guangzhou China Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou) Guangzhou China;

    State Key Laboratory of Tropical Oceanography (LTO) South China Sea Institute of Oceanology Chinese Academy of Sciences Guangzhou China;

    Southern Marine Science and Engineering Guangdong Laboratory Zhuhai China School of Marine Sciences Sun Yat-sen University Guangzhou China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    South China Sea; ERA-5; Significant wave height/wave period; Gale events; El Nino/Southern Oscillation;

    机译：南中国海;era-5;显着的波浪高/波期;大风事件;El Nino / Southern振荡;

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