Modeling the Middle Pliocene Climate

模拟上新世中期气候

• 批准号: 0214400
• 负责人: Mark Chandler
• 金额: $ 33.39万
• 依托单位: Columbia University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2002
• 资助国家: 美国
• 起止时间: 2002-09-01 至 2005-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0214400&HistoricalAwards=false
• 关键词: Modeling; Middle; Pliocene; Climate

This award support the model simulations of middle Pliocene climate using paleoclimatic data derived from the time period. The researcher will use Pliocene age terrestrial and marine data from the Pliocene Research, Interpretation, and Synoptic Mapping (PRISM) project as input to a coupled ocean-atmosphere General Circulation Model (GCM). The rationale for the research is that the middle Pliocene was a time when the Earth experienced global temperatures that are comparable to recent projections of future climate due to increases in atmospheric concentrations of greenhouse gases. Specifically, high latitude warming (relative to the present) and a reduced equator-to-pole temperature gradient dominated the middle Pliocene.The broader impacts of this proposed research center on addressing a critical question regarding greenhouse gases (GHG) concentrations and ocean temperatures. There is a desire on the part of the scientific community to determine if there are any oceanic 'surprises' in terms of heat transport or ocean circulation that track the increasing concentrations of GHG in the atmosphere. Using data from a period of greater warmth on Earth, in which geophysical boundary conditions are similar to the modern world, this proposed research may help identify if there are any 'surprises' in basic function of the heat carrying or circulatory properties of the ocean. When completed, the data generated by this research will be made available to the wider scientific community through publicly accessible databases.

该奖项使用从时期获得的古气候数据支持中新世气候的模型模拟。 研究人员将使用上新世研究，解释和天气映射（PRISM）项目的上新世年代的陆地和海洋数据作为对耦合的海洋 - 大气通用循环模型（GCM）的输入。 这项研究的理由是，中期是地球经历的全球温度，这与最近对未来气候的预测相当，这是由于温室气体的大气浓度增加而导致的。 具体而言，高纬度变暖（相对于目前）和降低的赤道温度梯度占据了上新世的占主导地位。该提出的研究中心对解决有关温室气体（GHG）浓度和海洋温度的关键问题的更广泛影响。 科学界有一种渴望确定在热运输或海洋循环方面是否存在任何海洋“惊喜”，以跟踪大气中温室气体浓度不断增加的情况。 使用来自地球上的地球物理边界条件与现代世界相似的地球上更高温暖时期的数据，这项拟议的研究可能有助于确定海洋载热或循环特性的基本功能是否存在“惊喜”。 完成后，这项研究产生的数据将通过公开访问的数据库提供给更广泛的科学界。