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Principal Features of the World Ocean Climate Change in the Cenozoic and Their Possible Causes

机译：新生代世界海洋气候变化的主要特征及其可能原因

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摘要

The objective of this study was to present details of the evolution of the thermal field of the ocean during the last Cenozoic glacial megacycle.The main causes of the phenomena observed are discussed based on the generalization of original data accumulated during many years and numerous publications.It is shown that,in the Eocene and Early Oligocene,the climatic conditions in the World Ocean were uniform and featured no evident zonal differences,the meridional temperature gradients were low,and the mean global temperature was close to the present-day value.Starting from the Late Oligocene and throughout the entire Neogene,the meridional contrasts in the temperature and hydrological conditions have increased,and,in the Late Pliocene,the climatic pattern resembled the present-day situation.The general tendency in the climate changes since the Eocene until the Pliocene consisted of its latitudinal differentiation and growing contrasts rather than of general climate cooling.In the Pleistocene,with the onset of the glaciation in the Northern Hemisphere,the character of the temperature field changed and variations in the mean global temperature values began to dominate.The factors that result from the climate changes observed are discussed and the causes are shown that lead to the differences between the author's data and the existing concepts.
机译：这项研究的目的是详细介绍最后一个新生代冰川大循环期间海洋热场的演变。根据多年积累的原始数据和大量出版物，对观测到的现象的主要原因进行了讨论。结果表明，在始新世和渐新世，世界海洋的气候条件是均匀的，没有明显的纬向差异，经线温度梯度很低，平均全球温度接近今天的值。从晚渐新世到整个新近纪，温度和水文条件的子午对比都增加了，在上新世晚期，气候模式类似于现在的情况。上新世包括其纬度差异和不断增加的对比，而不是由总体气候变冷所组成。 cene，随着北半球冰期的开始，温度场的特征发生了变化，全球平均温度值的变化开始占主导地位。讨论了由观测到的气候变化引起的因素，并指出了导致这种情况的原因。作者数据与现有概念之间的差异。

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