Collaborative Research: Quantifying the carbon emission and sequestration rate after a large CO2 pulse from the Siberian Traps volcanism

合作研究：量化西伯利亚陷阱火山活动产生的大量二氧化碳脉冲后的碳排放和封存率

• 批准号: 2026877
• 负责人: Ying Cui
• 金额: $ 32.12万
• 依托单位: Montclair State University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2020
• 资助国家: 美国
• 起止时间: 2020-08-15 至 2025-07-31
• 项目状态: 未结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=2026877&HistoricalAwards=false
• 关键词: Collaborative; Research; Quantifying; carbon; emission

The end-Permian mass extinction event (EPME) resulted in the loss of more than 90% of marine and 70% of land species. During the EPME (252 million years ago), one of the largest known volcanic events, the Siberian Trap (ST) volcanism, occurred and released massive quantities of carbon dioxide into the atmosphere. The impact of this volcanic event on the EPME and the subsequent recovery of life remains poorly understood. Therefore, it is critical to develop a better understanding of the dynamic climate and biogeochemistry of the end-Permian Earth. This project will use Earth system modeling to explore the CO2 emission rates from ST volcanism, weathering and the long-term buildup of greenhouse gases in the Early Triassic. This project will include the training of underrepresented students at Montclair State University and develop summer outreach programs to educate the general public at Yale University. New knowledge from this research will be integrated into educational and outreach activities. To better understand the mechanisms of the EPME and subsequent recovery, the project aims to produce new tropical ocean lithium and boron isotopic records spanning the one million year interval across the EPME and to improve quantitative understanding of the extent to which boron isotopes reflect pH changes and lithium isotopes reflect weathering intensity. These geochemical proxies will provide new insights into carbon emission and sequestration rates following the large pulse of CO2 emission associated with ST volcanism. The project will increase understanding of tropical paleoclimate history, including the role of extreme carbon emission and sequestration on the fate of ecosystem demise and recovery. The project team will also develop new modeling tools needed to produce reliable quantitative biogeochemical records spanning the EPME for model-data comparison.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.

二叠纪末大灭绝事件（EPME）导致超过90%的海洋物种和70%的陆地物种消失。在EPME（2.52亿年前）期间，发生了已知最大的火山事件之一，西伯利亚陷阱（ST）火山活动，并向大气中释放了大量的二氧化碳。这一火山事件对EPME的影响以及随后的生命恢复仍然知之甚少。因此，更好地了解二叠纪末地球的动态气候和地球化学至关重要。该项目将使用地球系统建模来探索早三叠世ST火山活动、风化和温室气体长期积累的二氧化碳排放率。该项目将包括在蒙特克莱尔州立大学培训代表性不足的学生，并制定暑期外联方案，在耶鲁大学教育公众。这项研究的新知识将纳入教育和外联活动。 为了更好地了解EPME和随后恢复的机制，该项目旨在产生新的热带海洋锂和硼同位素记录，跨越整个EPME的100万年间隔，并提高对硼同位素反映pH值变化和锂同位素反映风化强度的程度的定量理解。这些地球化学代理将提供新的见解与ST火山活动相关的CO2排放的大脉冲后的碳排放和封存率。该项目将增加对热带古气候历史的了解，包括极端碳排放和固碳对生态系统消亡和恢复命运的作用。该项目团队还将开发新的建模工具，以产生可靠的定量地球化学记录，跨越EPME的模型数据比较。该奖项反映了NSF的法定使命，并已被认为是值得通过使用基金会的智力价值和更广泛的影响审查标准进行评估的支持。

项目成果

Ecosystem responses of two Permian biocrises modulated by CO2 emission rates

• DOI: 10.1016/j.epsl.2022.117940
• 发表时间: 2023-01
• 期刊: Earth and Planetary Science Letters
• 影响因子: 5.3
• 作者: Wen-qian Wang;Feifei Zhang;Shuangbao Zhang;Ying Cui;Quan‐Feng Zheng;Yi‐chun Zhang;Dong-xun Yuan;Hua Zhang;Yi‐Gang Xu;S. Shen