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为国际放射性碳十年辩护

Timothy I Eglinton¹, Heather D Graven², Peter A Raymond³

¹Department of Earth Sciences, ETH Zurich, Zurich, Switzerland.

Philosophical transactions. Series A, Mathematical, physical, and engineering sciences

|October 9, 2023

概括

放射性碳 (¹⁴C) 的水平正在下降,原因是化石燃料和核试验. 未来的测量对了解碳循环至关重要,需要国际合作才能实现更好的碳循环.

科学领域:

地球和环境科学地球和环境科学
同位素地球化学同位素地球化学
大气化学大气化学

背景情况:

放射性碳 (C) 对于跟踪全球碳循环至关重要.
人类活动,化石燃料燃烧和核武器试验已经显著改变了大气14°C水平.
大气CO2中的C/C12比率目前低于工业化前的水平.

研究的目的:

为了突出化石燃料稀释和C炸弹对全球碳循环的双重影响.
强调需要协调的国际"放射性碳十年",以利用不断增长的测量能力.
概述未来放射性碳研究的关键目标,包括填补观测差距和加强观测网络.

主要方法:

对大气,陆地和海洋水库中历史和当前放射性碳 (C) 数据的分析.
使用14C炸弹作为空海气交换,碳循环和运输过程的追踪器.
审查和提出未来放射性碳研究的战略,包括数据合成和建模.

主要成果:

化石燃料的燃烧逐渐稀释了大气中的C.
核武器试验引入了"炸弹"14C,作为碳循环过程的全球追踪器.
未来14摄氏度下降的速度取决于化石燃料消耗和炸弹14摄氏度交换.

结论:

协调的国际努力至关重要,以最大限度地提高未来放射性碳测量的实用性.
拟定一个"放射性碳十年",以加强观测网络,开发数据工具,并为碳汇建立指标.
了解和预测未来的碳循环动态取决于持续和扩展的放射性碳监测.

关键词:

人类世 (Anthropocene) 是一个人类世.炸弹14C就是一个炸弹.碳循环中的碳循环.气候变化气候变化气候变化化石燃料是一种化石燃料.放射性碳 (14C) 是一种

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