Collaborative Research: An Eocene perspective on future recovery rates of climate and ocean chemistry

合作研究：从始新世角度看待气候和海洋化学的未来恢复率

• 批准号: 1658017
• 负责人: James Zachos
• 金额: $ 26.22万
• 依托单位: University of California-Santa Cruz
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2017
• 资助国家: 美国
• 起止时间: 2017-03-01 至 2023-02-28
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1658017&HistoricalAwards=false
• 关键词: Collaborative; Research; Eocene; perspective; future

This projects provides a case study of a past climate event, called the Eocene Thermal Maximum-2 to constrain natural recovery rates of climate and ocean chemistry following massive carbon input into Earth's surface reservoirs. The study will allow new insight into past climate and ocean acidification processes that were hitherto unexplored, hence promoting the progress of science and advancing the field of climatology. Such insight is essential to providing the public, scientific leaders, and policy makers with a better understanding of the consequences of unabated CO2 emissions for global climate, ocean carbonate chemistry, and marine ecosystems. Moreover, the project integrates research and educational activities by introducing this information directly into secondary school and college curricula and popular journals. The project fosters education for graduate and undergraduate students from ethnically diverse populations, while conducting cutting-edge research at the same time. The outcome of this study will advancethe understanding of the Earth system and hence improve forecasts of future climate change, which is beneficial to society.Specifically, proxy records will be generated and used (d13C, d18O, %CaCO3, B/Ca, d11B) in combination with numerical modeling to determine natural recovery times for carbon cycle processes, temperature, and surface ocean acidification. The study will (1) provide fundamental insight into negative climate-carbon cycle feedbacks, (2) address important gaps in data coverage and understanding of Eocene hyperthermals, and (3) constrain critical parameter values needed for future climate-carbon cycle simulations.

该项目提供了一个名为“始新世热最大值2”的过去气候事件的案例研究，以限制大量碳输入地球表面水库后气候和海洋化学的自然恢复率。该研究将为过去的气候和海洋酸化提供新的见解。迄今为止尚未探索过的过程，因此促进科学进步并推动气候学领域的发展，这对于向公众、科学领导者和政策制定者提供至关重要。更好地了解二氧化碳排放量有增无减对全球气候、海洋碳酸盐化学和海洋生态系统的影响。此外，该项目通过将这些信息直接引入中学和大学课程和流行期刊来整合研究和教育活动。为来自不同种族的研究生和本科生提供教育，同时进行前沿研究。这项研究的成果将增进对地球系统的了解，从而促进人们对地球系统的了解。改进对未来气候变化的预测，这对社会有利。具体来说，将生成并使用代理记录（d13C、d18O、%CaCO3、B/Ca、d11B）并结合数值模型来确定碳循环过程的自然恢复时间该研究将（1）提供对气候-碳循环负反馈的基本见解，（2）解决数据中的重要差距。对始新世高温的覆盖和理解，以及（3）限制未来气候-碳循环模拟所需的关键参数值。

项目成果

The Magnitude of Surface Ocean Acidification and Carbon Release During Eocene Thermal Maximum 2 (ETM‐2) and the Paleocene‐Eocene Thermal Maximum (PETM)

始新世热最大值 2 (ETM-2) 和古新世 — 始新世热最大值 (PETM) 期间表层海洋酸化和碳释放的程度

• DOI: 10.1029/2019pa003699
• 发表时间: 2020-02
• 期刊: Paleoceanography and Paleoclimatology
• 影响因子: 3.5
• 作者: Harper, D. T.;Hönisch, B.;Zeebe, R. E.;Shaffer, G.;Haynes, L. L.;Thomas, E.;Zachos, J. C.
• 通讯作者: Zachos, J. C.

Subtropical sea-surface warming and increased salinity during Eocene Thermal Maximum 2

始新世热最大值 2 期间副热带海面变暖和盐度增加

• DOI: 10.1130/g39658.1
• 发表时间: 2017-12
• 期刊: Geology
• 影响因子: 5.8
• 作者: Harper, Dustin T.;Zeebe, Richard;Hönisch, Bärbel;Schrader, Cindy D.;Lourens, Lucas J.;Zachos, James C.
• 通讯作者: Zachos, James C.