Collaborative Research: Diagnosing Global Climatic Responses to Large Volcanic Eruptions in Climate Reconstructions and Model Simulations

合作研究：在气候重建和模型模拟中诊断全球气候对大型火山喷发的响应

• 批准号: 2303352
• 负责人: Jason Smerdon
• 金额: $ 49.34万
• 依托单位: Columbia University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2023
• 资助国家: 美国
• 起止时间: 2023-09-01 至 2026-08-31
• 项目状态: 未结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=2303352&HistoricalAwards=false
• 关键词: Collaborative; Research; Diagnosing; Global; Climatic

The specific research effort for this project involves providing proxy-based global estimates of the spatiotemporal changes in temperature and hydroclimate after large volcanic eruptions. A global picture of proxy-estimated climate responses to volcanism is now possible because of new paleoclimate data assimilation products, which may provide new insights into how volcanoes influence changes in surface temperatures, hydroclimate, and climate dynamics. The ultimate aim of the project is to quantify risks and improve societal preparedness for climatic variations influenced by large volcanic eruptions.The research team intends to achieve the project’s research goals by assessing the temporal persistence of responses across multiple paleoclimate data assimilation outputs and ground-truth the estimates against other state-of-the-art proxy reconstructions and documentary evidence. The researchers will also characterize how dynamic climate responses are manifest in reconstructed sea-surface temperature and atmospheric pressure indices, as well as the positioning of the Intertropical Convergence Zone (ITCZ). All of these responses will be assessed seasonally and in terms of eruption latitudes. The proxy-based estimates will in turn be compared to an ensemble of Common Era simulations to characterize the dynamical responses to volcanic eruptions and understand associated uncertainties in the proxy-based products, volcanic forcing estimates, and the coupled climate models.The potential Broader Impacts include training two graduate students, hosting an annual workshop event for undergraduates aimed at encouraging careers in science, and recruiting women and underrepresented minorities through the AGU Bridge Program.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.

该项目的具体研究工作涉及对大型火山喷发后温度和氢化气候的空间时间变化提供基于代理的全球估计。由于新的古气候数据同化产物，现在可以估计替代火山的气候反应的全球图片，这可能会提供有关火山如何影响地表温度，氢化气候和气候动态变化的新见解。该项目的最终目的是量化风险并改善受大火山喷发影响的杂交变化的社会准备。研究团队打算通过评估跨多种古气候数据同化的响应的暂时持久性来实现该项目的研究目标，并估计对其他国家的ARTARTARTARTARTARTARTART-ARTART-ART-ART-ART-ART-TRUTH进行估计。研究人员还将表征动态的登山者反应如何在重建的海面温度和大气压指数以及受热带收敛区（ITCZ）的定位中表现出来。所有这些反应将根据季节性和喷发纬度评估。 The proxy-based estimates will in turn be compared to an ensemble of Common Era simulations to characterize the dynamic responses to volcanic eruptions and understand associated uncertainties in the proxy-based products, volcanic forcing estimates, and the coupled climb models.The potential Broader Impacts include training two graduate students, hosting an annual workshop event for undergraduates aimed at encouraging careers in science, and recruiting women and underrepresented通过AGU Bridge计划，该奖项反映了NSF的法定任务，并使用基金会的知识分子优点和更广泛的影响审查标准被认为是通过评估而被视为珍贵的支持。