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P2C2: Impact of Coupled Climate-Ice Sheet Processes on Past and Future Sea Level Trajectories

P2C2：气候-冰盖耦合过程对过去和未来海平面轨迹的影响

基本信息

批准号：
1903197
负责人：
Fabian Schloesser
金额：
$ 54.88万
依托单位：
University of Hawaii
依托单位国家：
美国
项目类别：
Standard Grant
财政年份：
2019
资助国家：
美国
起止时间：
2019-08-15 至 2022-07-31
项目状态：
已结题

来源：
https://www.nsf.gov/awardsearch/showAward?AWD_ID=1903197&HistoricalAwards=false
关键词：
P2C2 Impact Coupled Climate Ice

项目摘要

This project by an early career scientist aims to study the coupled climate-Antarctic and Northern Hemisphere ice sheet response to external forcing (e.g. orbital) by utilizing an earth modeling system (climate ice sheet modeling, CLIMS). The numerical simulations will be used to investigate how variations in greenhouse gas forcing and orbital configurations explain climate and ice sheet variability on orbital time scales over the last four glacial cycles (800, 000 years). Model results will be compared with ice core climate reconstructions to help provide a deeper insight into: 1) the underlying processes and the sensitivity of the Northern Hemisphere/Antarctic ice sheet/climate system to external forcings; and 2) the mechanisms that couple climate and ice sheets in both hemispheres. The potential Broader Impacts include a greater understanding of the processes underlying the coupling between climate and ice sheets, comprising ice sheet retreat and sea level variations at global and regional scales (e.g. Hawaii, the US mainland). The project will generate 3-dimensional coupled climate/ice sheet simulations and a paleo-data/model comparison for the last 800,000 years. The project has the potential to elucidate processes governing the stability of the Antarctic and Northern Hemispheric ice sheets and their contributions to sea-level and climate variability during the Late Quaternary.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.

该项目由一位早期职业科学家发起，旨在利用地球模拟系统（气候冰盖模拟，CLIMS）研究南极和北半球冰盖对外部强迫（如轨道）的耦合气候响应。数值模拟将用于研究在过去四个冰期（80万年）中，温室气体强迫和轨道配置的变化如何在轨道时间尺度上解释气候和冰盖的变化。将模式结果与冰芯气候重建结果进行比较，有助于更深入地了解：1)北半球/南极冰盖/气候系统的潜在过程和对外部强迫的敏感性；2)将两个半球的气候和冰盖结合起来的机制。潜在的更广泛的影响包括加深对气候与冰盖之间耦合的潜在过程的了解，包括全球和区域尺度（如夏威夷、美国大陆）的冰盖退缩和海平面变化。该项目将生成三维耦合的气候/冰盖模拟和过去80万年的古数据/模型比较。该项目有可能阐明控制南极和北半球冰盖稳定性的过程及其对晚第四纪海平面和气候变率的贡献。该奖项反映了美国国家科学基金会的法定使命，并通过使用基金会的知识价值和更广泛的影响审查标准进行评估，被认为值得支持。