Long-Term Climate Change Studies with Energy Balance Models

造成大规模、长期的物理机制 地质记录中发现的冰川循环并不好 明白 在这个研究项目中， 模型将被用来调查的相对重要性， 一些物理机制有助于塑造 在10，000到100，000年的时间尺度上。 科学 调查工作包括：（1）检查 海冰和铅对极地和全球气候的影响， 特别是它们对能源的影响， 大气和海洋之间的水分交换; 2） 审查轨道变化引起的太阳辐射的影响 用耦合海冰模拟的辐射变化对气候的影响 - 气候模型，以及促进气候变化的物理机制 这些气候变化;和3）对过程的调查 参与了冰盖的形成 这项工作很重要，因为 它将增强我们对海冰复杂作用的理解 气候变化的相关过程。

The physical mechanisms that cause the large scale, long term glacial cycles found in the geologic record are not well understood. In this research project a hierarchy of climate models will be used to investigate the relative importance of some of the physical mechanisms that contribute to shaping climate on the 10,000 to 100,000 year time scale. The scientific investigations to be conducted include 1) an examination of the influence of sea ice and leads on both polar and global climate, especially with respect to their impact on the energy and moisture exchanges between the atmosphere and ocean; 2) an examination of the impact of orbital variation induced solar radiation variations on climate as modeled by the coupled sea ice - climate model, and of the physical mechanisms that facilitate those climate changes; and 3) an investigation into the processes involved in ice sheet initiation. This work is important because it will enhance our understanding of the complex role of sea ice related processes in in affecting long term climate change.