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Processes controlling sea surface temperature variability of ningaloo nino

机译：控制海面温度变异性的过程

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摘要

A high-resolution (3-8 km) regional oceanic general circulation model is utilized to understand the sea surface temperature (SST) variability of Ningaloo Nino in the southeast Indian Ocean (SEIO). The model reproduces eight Ningaloo Nino events with good fidelity and reveals complicated spatial structures. Me-soscale noises are seen in the warming signature and confirmed by satellite microwave SST data. Model experiments are carried out to quantitatively evaluate the effects of key processes. The results reveal that the surface turbulent heat flux (primarily latent heat flux) is the most important process (contribution. 68%) in driving and damping the SST warming for most events, while the roles of the Indonesian Throughflow (;15%) and local wind forcing are secondary. A suitable air temperature warming is essential to reproducing the reduced surface latent heat loss during the growth of SST warming (;66%), whereas the effect of the increased air humidity is negligibly small (1%). The established SST warming in the mature phase causes increased latent heat loss that initiates the decay of wanning. A 20-member ensemble simulation is performed for the 2010/11 super Ningaloo Nino, which confirms the strong influence of ocean internal processes in the redistribution of SST warming signatures. Oceanic eddies can dramatically modulate the magnitudes of local SST warming, particularly in offshore areas where the "signal-to-noise" ratio is low, raising a caution for evaluating the predictability of Ningaloo Nino and its environmental consequences.
机译：高分辨率（3-8 km）区域海洋一般循环模型用于了解印度海洋（SEIO）在东南部的宁加罗尼诺的海面温度（SST）变异性。该模型以良好的保真度再现了八个Niningaloo Nino事件，并揭示了复杂的空间结构。在温暖的签名中看到了ME-SQUALE噪音，并通过卫星微波SST数据确认。进行模型实验以定量评估关键过程的影响。结果表明，表面湍流热通量（主要潜热通量）是最重要的过程（贡献。68％）在大多数事件中驾驶和阻尼SST变暖时，而印度尼西亚流行（; 15％）的角色局风强迫是次要的。合适的空气温度升温对于在SST变暖（66％）的生长期间再现表面潜热损失是必不可少的，而增加的空气湿度的效果可忽略小（1％）。成熟阶段的已建立的SST变暖导致增加潜伏的热量损失，引发了衰落的衰落。为2010/11 Super Niningaloo Nino执行了20构件集合，这证实了海洋内部流程在SST变暖签名的重新分配中的强烈影响。海洋漩涡可以显着地调节局部SST变暖的大小，特别是在“信号 - 噪声”比率低的海上区域，提高了评估Ningaloo Nino的可预测性及其环境后果的谨慎。

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  • 来源
    《Oceanographic Literature Review》 |2020年第10期|2116-2116|共1页
  • 作者

    G.U.O. Yam; L.I. Yuanlong; F. Wang;

  • 作者单位

    CAS Key Laboratory of Ocean Circulation and Waves Institute of Oceanology Chinese Academy of Sciences Qingdao China;

    CAS Key Laboratory of Ocean Circulation and Waves Institute of Oceanology Chinese Academy of Sciences Qingdao China;

    CAS Key Laboratory of Ocean Circulation and Waves Institute of Oceanology Chinese Academy of Sciences Qingdao China;

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