古气候学的任务 古气候研究的第一个目的是阐述仪器记录范围以外的气候变化,终极目的则系理论上的,应用古气候学的方法来说明这些变化的自然过程。 为了解气候的复杂性,同时由于古气候研究的任务在于发展气候变化的基本理论,在这里回顾一下我们所了解到的气候的主要特点是有用的。首先,大气圈不是一个仅对太阳辐射孤立反应的实体,而与地球系统的其它三部分,即与海洋、冰层和陆地表面相连系。这个系统的某一部分发生变化都会引起其它部分全部发生变化;其次,我们知道,这些连系的性质是 The mission of palaeoclimate The first objective of palaeoclimate research was to describe the climatic changes beyond the scope of instrumental logging. The ultimate aim was to apply the theory of paleoclimate to illustrate the natural processes of these changes. To understand the complexity of the climate, and since the task of paleoclimate research is to develop the basic theory of climate change, it is useful here to recall the main features of the climate we have learned. First, the atmosphere is not an isolated entity that responds only to solar radiation but to the other three parts of the Earth system, namely, the ocean, ice and land surfaces. Changes in one part of this system will cause all other parts to change; secondly, we know that the nature of these connections is