Experiments with the Climatic Response to Radiation Forcing Over the Milankovitch Frequency Band

米兰科维奇频段辐射强迫的气候响应实验

• 批准号: 8812589
• 负责人: John Imbrie
• 金额: $ 90.84万
• 依托单位: Brown University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1988
• 资助国家: 美国
• 起止时间: 1988-10-15 至 1994-09-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8812589&HistoricalAwards=false
• 关键词: Experiments; Climatic; Response; Radiation; Forcing

This is a continuation of SPECMAP, a research program begun in 1979. The general goal of SPECMAP is to advance our understanding of climate dynamics on orbital time scales (10,000 to 100,000 years). Over this frequency band, major changes in the global climate system are externally forced by modulations in the annual cycle of incoming radiation. This phase of SPECMAP research includes a major shift toward an experimental program in which the existing SPECMAP database augmented by crucial new observations, is assimilated into a series of numerical experiments. These experiments will be conducted around three themes: the tropical ocean, high- latitude processes, and the ocean carbon system. This research is important because it provides a rare opportunity (one for which the forcing is known with great precision) to conduct quantitative investigations of the mechanisms of climate change. The specific goal is to understand the physical and chemical mechanisms by which the ocean, coupled to the atmosphere and cryosphere, mediates the climatic response of the earth to orbital forcing by altering the fluxes of heat, salt, and carbon.

这是 1979 年开始的一项研究计划 SPECMAP 的延续。SPECMAP 的总体目标是增进我们对轨道时间尺度（10,000 至 100,000 年）气候动态的理解。在这个频段上，全球气候系统的重大变化是由每年传入辐射周期的调制所造成的。 这一阶段的 SPECMAP 研究包括向实验计划的重大转变，其中现有的 SPECMAP 数据库通过重要的新观察结果进行了扩充，并被吸收到一系列数值实验中。 这些实验将围绕三个主题进行：热带海洋、高纬度过程和海洋碳系统。 这项研究很重要，因为它为对气候变化机制进行定量研究提供了难得的机会（其中的强迫非常精确）。 具体目标是了解海洋与大气和冰冻圈耦合的物理和化学机制，通过改变热、盐和碳的通量来调节地球对轨道强迫的气候响应。