International Postdoctoral Fellows Program: Rapid Atmospheric CO2 Variations and Ocean Circulation

9509247菲格国际初级研究员和博士后研究员计划使美国科学家和工程师能够在国外进行3至24个月的研究。该项目的奖项提供了联合研究的机会，并提供了使用国外独特或互补的设施、专业知识和实验条件的机会。该奖项将支持瑞金娜·A·菲格博士在瑞士伯尔尼大学与托马斯·F·斯托克博士进行为期12个月的博士后研究访问。这项研究的目的是利用伯尔尼二维海洋-大气耦合模型提高对地球碳循环动力学的理解。重要的是要了解控制碳循环的过程，以便能够评估与过去和继续排放的二氧化碳(二氧化碳)相关的未来气候变化，二氧化碳是主要的“温室”气体之一。伯尔尼模型在研究海洋碳循环方面的优势在于它的计算效率，以及它解析海洋温盐环流的全球特征的能力，这可能是地球自然大气二氧化碳浓度背后的关键驱动机制，特别是在短时间尺度上。菲格博士将通过在海洋中现有的无机成分中加入有机碳循环来帮助修正伯尔尼模型。她将使用这个版本的模型来研究地质记录中观察到的地球自然碳循环中涉及的重要特征和过程。她将测量从瑞士泥炭沼泽采集的泥炭岩芯上的稳定碳同位素，以验证重建大气二氧化碳浓度的新方法。***

9509247 Figge The International Junior Investigator and Postdoctoral Fellows Program enables U.S. scientists and engineers to conduct three to twenty-four months of research abroad. The program's awards provide opportunities for joint research, and the use of unique or complementary facilities, expertise and experimental conditions abroad. This award will support a twelve-month postdoctoral research visit by Dr. Regina A. Figge to work with Dr. Thomas F. Stocker at the University of Bern in Switzerland. The objective of this research is to improve understanding of the Earth's carbon cycle dynamics using the Bern 2D coupled ocean-atmosphere model. It is important to understand the processes that control the cycling of carbon to be able to assess future climate change associated with past and continuing emissions of carbon dioxide (CO2), which is one of the major "greenhouse" gases. The Bern model's strength in studying the cycling of carbon by the ocean is its computational efficiency combined with its ability to resolve the global features of the ocean thermohaline circulation which may be a critical driving mechanism behind the Earth's natural atmospheric CO2 concentration, especially on brief time scales. Dr. Figge will help to modify the Bern model by adding an organic carbon cycle to the ocean's existing inorganic component. She will use this version of the model to investigate the important features and processes involved in the Earth's natural carbon cycle as observed in the geological record. And she will measure stable carbon isotopes on a peat core to be collected from a Swiss peat bog to verify a new method for reconstructing atmospheric CO2 concentration. ***