Solar Modulation of Atmospheric C14 Production (Solar Wind, Flares, Irradiance and Climate Changes)

大气 C14 生产的太阳能调节（太阳风、耀斑、辐照度和气候变化）

• 批准号: 9819228
• 负责人: Paul Damon
• 金额: $ 32.4万
• 依托单位: University of Arizona
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1999
• 资助国家: 美国
• 起止时间: 1999-09-01 至 2003-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9819228&HistoricalAwards=false
• 关键词: Solar; Modulation; Atmospheric; C14; Production

The investigators will deconvolute and understand phenomena that produce variations in atmospheric Carbon 14 as a function of time. Knowledge of the time history of Carbon 14 production is essential for dating archeological samples. The cause of these variations may also be diagnostic of processes involved in climate change. The main effort is to examine this variation with high precision measurements of annual tree rings in samples of wood of a known age. Measurements will be made with liquid scintillation counters in an underground laboratory, and by accelerator mass spectrometry. A major goal will be to evaluate the effect of climate change on the upwelling of Carbon 14 depleted carbon dioxide along the western coasts of North America, South America, and Africa.

研究人员将解卷积和理解产生大气中碳14随时间变化的现象。 了解碳14产生的时间历史对于确定考古样品的年代至关重要。这些变化的原因也可能是气候变化过程的特征。主要的努力是研究这种变化与高精度测量的树木年轮样本的一个已知的年龄。测量将在地下实验室用液体闪烁计数器和加速器质谱仪进行。 一个主要目标是评估气候变化对北美、南美和非洲西海岸沿着碳14耗尽的二氧化碳上升流的影响。