...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of oceanography >Impacts of South China Sea throughflow on the mean state and El Nino/Southern Oscillation as revealed by a coupled GCM
【24h】

Impacts of South China Sea throughflow on the mean state and El Nino/Southern Oscillation as revealed by a coupled GCM

机译：GCM耦合揭示的南海通流对平均状态和厄尔尼诺/南方涛动的影响

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

The South China Sea (SCS) throughflow (SCSTF) enters the SCS from the Luzon Strait and exits it through the straits to the south. Using a coupled general circulation model (CGCM), this study reveals impacts of the SCSTF on the mean state and El Nino/Southern Oscillation (ENSO). It is found that the model's sea surface temperature becomes cooler in the eastern and far western equatorial Pacific and south of Japan, but significantly wanner in the SCS, when the SCSTF is blocked. The warming in the SCS is likely a result of accumulated surface heat flux which otherwise would be transported out of the SCS by the SCSTF. Furthermore, the dominant period of ENSO is 4 years when the SCSTF is allowed, but it becomes 5 years when the SCSTF is blocked. This is because the meridional extent of zonal wind anomalies becomes broader and the Walker Circulation in the Indian Ocean becomes stronger in the no-SCSTF case. On the other hand, changes in the zonal location of zonal wind anomalies, the phase speed of baroclinic Kelvin waves, the occurrence of westerly wind bursts, and strength of atmospheric feedbacks do not contribute to the difference between the two experiments even though they are known to influence the ENSO period. The climatic importance of the SCSTF has been so far overlooked because of its small volume transport compared with other major currents in the global ocean, but the present work shows for the first time its possible impacts on ENSO.
机译：南中国海（SCS）流量（SCSTF）从吕宋海峡进入南海，并通过海峡向南流出。使用耦合的一般循环模型（CGCM），这项研究揭示了SCSTF对平均状态和厄尔尼诺/南方涛动（ENSO）的影响。结果发现，该模型的海表温度在赤道东太平洋和远西赤道太平洋以及日本南部变得更低，但在南太平洋海平面温度被封闭时，海平面温度将明显下降。 SCS中的变暖可能是表面热通量累积的结果，否则，表面热通量将由SCSTF传输出SCS。此外，如果允许使用SCSTF，则ENSO的主要期限为4年，而如果阻止SCSTF，则其为5年。这是因为在非SCSTF情况下，纬向风异常的子午范围变宽，印度洋的沃克环流变强。另一方面，纬向风异常的纬向位置的变化，斜压开尔文波的相速度，西风爆发的发生以及大气反馈的强度，即使它们是已知的，也无助于两个实验之间的差异。影响ENSO时期。迄今为止，由于与全球海洋中其他主要海流相比其运输量小，南太平洋科学技术委员会的气候重要性一直被忽略，但是目前的工作首次表明了其对ENSO的可能影响。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号