北太平洋副热带海洋环流气候变化研究

Study on Climate Variability of the Subtropical Gyre in the North Pacific

北太平洋副热带环流的变化在全球气候变化和热量的经向输送中占重要地位。本文对近 10年有关北太平洋副热带海洋环流气候变化的研究进行了综述。主要研究成果有 :用卫星高度计首次观测到全球海洋Rossby波的传播特征 ;确定了气候意义下北太平洋副热带逆流为 2支 ,揭示了其中一支与北太平洋模态水的存在有关 ,另一支是夏威夷群岛附近海洋 大气 陆地相互作用的结果 ;首次发现了台湾以东黑潮流量有显著的准 10 0天振荡等。本文还提出了在北太平洋副热带环流研究中目前存在的新科学问题。

Variability of the Subtropical Gyre in the North Pacific is very important in Global Climate Change and meridional heat transport. In this paper, new research achievements in the climate variation of the Subtropical Gyre in the North Pacific during the last 10 years are reviewed. The main research achievements are as follows: The propagation features of Rossby waves in the global oceans was first observed using satellite altimeter; It has been confirmed that the Subtropic Countercurrent in the Northern Subtropic Pacific may be divided into two branches, and it has been discovered that one of them is related with the Mode Water in the Northwestern Pacific and the other is the result of Ocean-Atmosphere-Land interaction; The quasi-100 day oscillation of the Kuroshio transport has been discovered for the first time, etc. Some new scientific problems concerning the study on the climate variation of the Subtropical Gyre are put forward in this paper.