Zonal overturning circulation and heat flux induced by heaving modes in the world oceans
Zonal overturning circulation and heat flux induced by heaving modes in the world oceans
复制标题
世界海洋起伏模式引起的纬向翻转环流和热通量
DOI：
10.1007/s13131-015-0751-3
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发表时间：
2015
影响因子：
1.4
通讯作者：
Wang Xin
中科院分区：
文献类型：
--
作者：
Tan Wei;Huang Rui Xin;Wang Weiqiang;Wang Xin
纬向翻转环流（ZOC）及其伴随的纬向热通量（ZHF）是海洋环流和气候系统的重要组成部分，但尚未得到足够的重视。年际和年代际风应力扰动引起的升沉可以引起ZOC和ZHF的异常。基于一个简单的简化重力模型，研究了由理想化的起伏模引起的全球海洋ZOC和ZHF异常。例如，在一个类似太平洋的模式中，在年代际时间尺度上增强的赤道东风可以导致一个不可忽略的负ZOC（-0.3 106 m3/s）和一个相当大的向西ZHF（振幅为-11.2 TW）。因此，异常的ZOC和ZHF可能是年代际气候信号的主要组成部分，因此在海洋环流和气候变化中起着重要作用。
Zonal overturning circulation (ZOC) and its associated zonal heat flux (ZHF) are important components of the oceanic circulation and climate system, although these conceptions have not received adequate attentions. Heaving induced by inter-annual and decadal wind stress perturbations can give rise to anomalous ZOC and ZHF. Based on a simple reduced gravity model, the anomalous ZOC and ZHF induced by idealized heaving modes in the world oceans are studied. For example, in a Pacific-like model basin intensified equatorial easterly on decadal time scales can lead to a negative ZOC with a non-negligible magnitude (–0.3×106m3/s) and a considerable westward ZHF with an amplitude of–11.2 TW. Thus, anomalous ZOC and ZHF may consist of a major part of climate signals on decadal time scales and thus play an important role in the oceanic circulation and climate change.