P2C2: Paleo-synoptic Changes as Recorded in the Mineral Dust in the Guliya Ice Cap, Northwestern Tibetan Plateau

P2C2：青藏高原西北部古里雅冰盖矿物尘记录的古天气变化

• 批准号: 2002521
• 负责人: Emilie Beaudon
• 金额: $ 38.71万
• 依托单位: Ohio 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: 2020-05-01 至 2024-04-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=2002521&HistoricalAwards=false
• 关键词: P2C2; Paleo; synoptic; Changes; Recorded

This project seeks to develop an aeolian dust record for the Northern hemisphere derived from an ice core (16-125 thousand years) from the Guliya ice cap in Northwest Tibet. Specifically, the researchers will characterize the radiogenic, geochemical and morphological properties of mineral particles preserved in the ice core. These data will be compared with climate model simulations under different climate scenarios to understand the paleo-dust record sensitivity to climate variability on orbital scales and during abrupt climate events. The proposed research goals are to 1) document the variability of the nature of the aeolian dust throughout late Pleistocene, and 2) characterize the mechanisms through which the dust emission sources, and transport are linked to westerlies and the Indian Summer Monsoon systems (ISM). This project will provide new knowledge on the regional lithosphere-atmosphere-cryosphere interactions over the late Pleistocene and the Holocene in Northwest Tibet.The potential Broader Impacts include the development of a new aeolian dust record from the Tibetan Plateau that will fill a geographic data gap in mid-latitude dust source variability and strengthen ice core geochemistry and paleoclimatology research disciplines. Other Broader impacts comprise several outreach activities including: 1) a video segment of ~5 minutes to highlight the inception of the research question, deployment of laboratory techniques, and methods; 2) A classroom lesson for use in high school and undergraduate geosciences classrooms; 3) a presentation to discriminate the science and findings of this project to the broader community through the Columbus Science Pub outreach program.In addition, the project will support the training of one graduate student and an early career female scientist (Post-doctoral researcher) in ice core paleoclimatology, mineralogy and modeling.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.

该项目旨在为北半球的冰核（16-125千年）衍生出来自西北西北西北部的古利亚冰盖的北半球尘埃记录。具体而言，研究人员将表征保留在冰芯中的矿物颗粒的放射原源，地球化学和形态学特性。这些数据将与不同气候场景下的气候模型模拟进行比较，以了解对轨道尺度和突然气候事件中气候变异性的古粉状记录敏感性。拟议的研究目标是1）记录整个更新世晚期风格粉尘的性质的可变性，以及2）表征粉尘排放源和运输与西风和印度夏季季风系统（ISM）相关的机制。该项目将提供有关更新世晚期的区域岩石圈 - 大气 - 晶体相互作用的新知识，以及西北西藏的全新世。潜在的更广泛的影响包括从藏族高原的新的Aeolian粉尘记录的发展，这将填补中层尘埃量的尘埃变异性型号和质量质量质量的地理数据间隙。其他更广泛的影响包括：1）〜5分钟的视频段，以突出研究问题的启动，实验室技术的部署和方法； 2）在高中和本科地球科学教室中使用课堂课； 3) a presentation to discriminate the science and findings of this project to the broader community through the Columbus Science Pub outreach program.In addition, the project will support the training of one graduate student and an early career female scientist (Post-doctoral researcher) in ice core paleoclimatology, mineralogy and modeling.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader影响审查标准。

项目成果

Aeolian Dust Preserved in the Guliya Ice Cap (Northwestern Tibet): A Promising Paleo-Environmental Messenger

• DOI: 10.3390/geosciences12100366
• 发表时间: 2022-09
• 期刊: Geosciences
• 影响因子: 2.7
• 作者: Roveri Marco;Jesus Martinez-Frias;E. Beaudon;J. Sheets;E. Martin;Roxana Sierra-Hern á ndez;E. Mosley‐Tho