Internal and External Causes of Climatic Changes

气候变化的内因和外因

• 批准号: 9013217
• 负责人: Michael Ghil
• 金额: $ 45.8万
• 依托单位: University of California-Los Angeles
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1990
• 资助国家: 美国
• 起止时间: 1990-08-15 至 1996-01-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9013217&HistoricalAwards=false
• 关键词: Internal; External; Causes; Climatic; Changes

The objective of the proposed study is to continue research on the physical mechanisms of Quaternary glaciations. Simple models of these mechanisms will be developed further, including box models of the paleooceanic circulation, in addition to the previously-modeled radiation balance, ice-sheet mass balance and hydrologic cycle. Model results will be compared in the spectral and temporal domain with marine and continental paleoclimatic data, including the Vostok ice-core records and marine records dated by Accelerator Mass Spectrometry. The previous research on the low-frequency variability of the atmosphere will also be extended, emphasizing intraseasonal oscillations in the global atmosphere. This research will proceed through theoretical studies with a hierarchy of simple and intermediate models, observational studies of the longest upper-air datasets, and the UCLA GCM. The results of the study will be valuable in helping us to narrow the gap in our understanding between paleoclimate and more the recent climate.

拟议研究的目的是继续研究 第四纪冰川的物理机制 简单 这些机制的模型将进一步发展，包括 古海洋环流的箱型模型，此外， 先前模拟的辐射平衡、冰盖质量平衡和 水文循环 模型结果将在光谱中进行比较 海洋和大陆古气候的时间域 数据，包括东方号冰芯记录和海洋记录 由加速器质谱仪测定 对低频变异性的研究， 气氛也将得到扩展，强调季节内 全球大气层的振荡。 这项研究将 通过理论研究进行， 和中间模型，最长的观测研究 高空数据集和UCLA GCM。 研究结果 将有助于我们缩小我们之间的差距， 了解古气候与近代气候之间的关系。