The Relationship Between Marine Plankton 13C/12C and CO2 Concentration: Proposed Field Studies

海洋浮游生物 13C/12C 与 CO2 浓度之间的关系：拟议的实地研究

• 批准号: 9017773
• 负责人: Greg Rau
• 金额: $ 13.16万
• 依托单位: University of California-Santa Cruz
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1991
• 资助国家: 美国
• 起止时间: 1991-05-01 至 1994-04-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9017773&HistoricalAwards=false
• 关键词: Relationship; Between; Marine; Plankton; 13C

It is hypothesized that a significant inverse relationship exists between the 13C/12C of particulate organic matter (POM) and the ambient concentration of molecular CO2 in surface seawater. This hypothesis will be tested by sampling and isotopically analyzing suspended POM in concert with NOAA- sponsored measurements of pCO2 and TCO2 i) at seasonally sampled stations near Hawaii and Bermuda, and ii) during cruise transects in the Pacific and Atlantic Oceans. The results of this research will have significant implications for the use of such isotopic measurements as a proxy for time-integrated ocean/atmospheric CO2 concentrations in the present ocean. This research will also aid in the reconstruction of past changes in global CO2 concentrations via isotopic variations in the marine sedimentary record. In addition, the concentrations of surface water particulate organic carbon and nitrogen will be determined, and together with the isotopic determinations will complement NOAA- supported investigations of marine carbon biogeochemistry.

据推测，一个显着的反比关系， 存在于颗粒有机物（POM）的13 C/12 C之间 以及表面分子CO2的环境浓度 海水 这一假设将通过抽样检验， 与NOAA合作进行悬浮POM的同位素分析- 赞助的pCO 2和TCO 2测量i）季节性 夏威夷和百慕大附近的采样站，以及ii）巡航期间 在太平洋和大西洋的横断面。 的结果 这项研究将对使用 这种同位素测量作为时间积分的替代， 海洋/大气CO2浓度在目前的海洋。 这项研究也将有助于重建过去的 全球二氧化碳浓度的变化通过同位素变化， 海洋沉积记录 此外，浓度 地表水颗粒有机碳和氮将 与同位素测定一起， 将补充NOAA支持的海洋碳调查 地球化学