The Abundance of the Stable Carbon Isotopic Ratio of Atmospheric Carbon Dioxide and Oceanic Carbon in Relation to the Global Carbon Cycle and Climatic Change

大气二氧化碳和海洋碳稳定碳同位素比丰度与全球碳循环和气候变化的关系

• 批准号: 9711882
• 负责人: Charles Keeling
• 金额: $ 165万
• 依托单位: University of California-San Diego Scripps Inst of Oceanography
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1998
• 资助国家: 美国
• 起止时间: 1998-01-01 至 2001-12-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9711882&HistoricalAwards=false
• 关键词: Abundance; Stable; Carbon; Isotopic; Ratio

9711882 Keeling The project will continue Professor Keeling's 40-year atmospheric carbon dioxide time series and his measurements of dissolved inorganic carbon (DIC) and titration alkalinity (TA) of surface sea water at an array of stations (a 13-yr record). The long term goal of this work is to document how the carbon cycle is responding to human activities and to variability in climate. As part of this science objective, the project will continue to produce time series data on the stable carbon isotopic ratio of carbon dioxide and DIC on the same samples of air and water, to identify impacts on the oceanic and terrestrial carbon cycles. The stable isotope information will be combined with laboratory studies to predict to high accuracy the partial pressure of CO2 in sea water from DIC and TA data. Finally, the patterns in the time series data sets will be compared to patterns observed in records of global temperature and of the greenness of vegetation. This additional task is intended to produce knowledge about the fluxes and storage of carbon in natural systems and their relation to climate by detecting temporal and spatial patterns in atmospheric CO2. ATM-9711882

9711882 Keeling 该项目将延续 Keeling 教授的 40 年大气二氧化碳时间序列以及他在一系列站点对表层海水溶解无机碳 (DIC) 和滴定碱度 (TA) 的测量（13 年记录）。 这项工作的长期目标是记录碳循环如何响应人类活动和气候变化。 作为该科学目标的一部分，该项目将继续生成相同空气和水样本中二氧化碳和 DIC 的稳定碳同位素比的时间序列数据，以确定对海洋和陆地碳循环的影响。 稳定同位素信息将与实验室研究相结合，根据 DIC 和 TA 数据高精度预测海水中二氧化碳的分压。 最后，时间序列数据集中的模式将与全球温度和植被绿度记录中观察到的模式进行比较。 这项附加任务旨在通过检测大气二氧化碳的时间和空间模式来产生有关自然系统中碳的通量和储存及其与气候关系的知识。 ATM-9711882