大洋环流的通风温跃层研究进展

介绍了大洋环流理论中通风温跃层研究的主要进展。给出了温跃层研究的发展过程、有关通风温跃层的基本概念、通风温跃层内环流的基本特征以及环流通风的计算结果。突出强调了在给出大洋的表面边界条件的情况下,如风应力旋度、背景层化、混合层深度、混合层密度分布以及侧边界条件,如何由通风温跃层理论得到大洋在三维尺度上水体运动的特征。

ADVANCES IN STUDY OF VENTILATED THERMOCLINE THEORY OF OCEAN CIRCULATION

This paper introduces the major advances in the studies of the ventilated thermocline theory of ocean circulation. The progress in the study of the thermocline, the fundamental conception of the ventilated thermocline, the basic characteristics of circulation in the ventilated thermocline, and the results of the calculation of the ventilated thermocline are given in this paper. LPS's model consists of a finite but arbitrarily number of inviscid, homogeneous fluid layers each with a different density. The dynamical balances everywhere are Sverdrupian. The position of the outcrop of density interfaces is specified. This outcropping of density allows deep motion to be excited by the ventilation provided by Ekman pumping even in latitudes far south of the outcrop where the layer is shielded from direct influence of the wind. We make a point of how to get the three dimensional characteristics of circulation according to the ventilated thermocline theory, using realistic surface boundary conditions which are taken from observations, and lateral conditions including the background stratification, the wind stress curl, the depth of the mixed layer, and the surface density field. At last, the recent studies of the ventilation thermocline are also discussed.