EAR-PF: Calibrating the Paleosol CO2 Barometer by Monitoring Modern Calcic Soils

Dan Breecker博士被授予美国国家科学基金会地球科学博士后奖学金，在亚利桑那大学开展研究和教育项目。布雷克博士将测定土壤中碳酸盐矿物沉淀过程中二氧化碳的浓度。研究目标将通过测量亚利桑那州、新墨西哥州和堪萨斯州不同地区土壤中的二氧化碳浓度、碳同位素、湿度和温度来实现；这些土壤是在不同的气候和植被条件下形成的。这些结果将用于计算现代环境下的大气二氧化碳浓度，以及重建古气候模型。这项调查还将提供关于土壤中可以储存多少二氧化碳的信息，并有助于全面了解碳循环。此外，Breecker博士还将与高中生互动，讲授大气中的二氧化碳及其在碳循环中的作用，让志愿者学生参与监测采样点，并协助科学博览会项目。

Dr. Dan Breecker is awarded an NSF Earth Science Postdoctoral Fellowship to carry out a program of research and education at the University of Arizona. Dr. Breecker will determine the concentration of CO2 during the precipitation of carbonate minerals in soils. The research goals will be accomplished by measuring CO2 concentrations, carbon isotopes, moisture and temperature in soils from different regions in Arizona, New Mexico, and Kansas; these soils have developed under different climate and vegetation conditions. These results will be used to calculate atmospheric CO2 concentrations in modern settings as well as to reconstruct paleoclimate models. This investigation will also provide information on how much CO2 soils can store in soils and it will contribute to the overall understanding of carbon cycle.In addition, Dr. Breecker will interact with high schools students by giving lectures on CO2 in the atmosphere and its role in the carbon cycle, engaging volunteer students in monitoring sampling sites, and assisting with science fair projects.