Collaborative Research: Constraining Pliocene North Pacific marine heatwave variability from individual foraminifera Mg/Ca

合作研究：限制个体有孔虫 Mg/Ca 的上新世北太平洋海洋热浪变化

• 批准号: 2202085
• 负责人: Alexander Gagnon
• 金额: $ 51.61万
• 依托单位: University of Washington
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2022
• 资助国家: 美国
• 起止时间: 2022-07-15 至 2025-06-30
• 项目状态: 未结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=2202085&HistoricalAwards=false
• 关键词: Collaborative; Research; Constraining; Pliocene; North

Marine heatwaves are extended periods of above average ocean temperature. They can have large social and economic impacts. The frequency and duration of marine heatwaves is thought to be increasing, but little data exists to evaluate such trends. This project will place marine heatwaves in a broader context by reconstructing heatwave variability during the late Pliocene. That warm time period roughly 2.6 to 3.6 million years ago is a geologic analog for near future climate. Results from this project will provide data to evaluate climate model simulations. That will help improve model forecasts of future climate, including marine heatwaves. The project will support a graduate student at Western Washington University and a postdoc at the University of Washington. The project will also support development of college-level teaching modules focused on climate, and outreach efforts to inform the public about the causes and consequences of marine heatwaves.This project will explore marine heatwave behavior in the north Pacific, where a heatwave event from 2014-2016 was likely the most ecologically and economically impactful ever. Using element/calcium ratios of individual Globigerina bulloides foraminifera, the project will generate distributions of sea surface temperature from which the fingerprint of marine heatwaves can be extracted using quantile-quantile analysis. By comparing reconstructions from the Holocene to those during the mid-Piacenzian warm period at multiple core sites, the project will characterize the behavior of north Pacific marine heatwaves during the preindustrial and a geologic analog for future climate, thereby providing a valuable target for improving climate models.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.

海洋热浪是高于平均海洋温度的延长时期。他们可以产生巨大的社会和经济影响。人们认为海洋热浪的频率和持续时间正在增加，但是几乎没有数据来评估这种趋势。该项目将通过重建上新世晚期的热波变异性来将海洋热浪置于更广泛的环境中。大约2.6至360万年前的温暖时间是对未来气候的地质类似物。该项目的结果将提供数据以评估气候模型模拟。这将有助于改善包括海洋热浪在内的未来气候的模型预测。该项目将支持西华盛顿大学的研究生和华盛顿大学的博士后。该项目还将支持针对气候的大学级教学模块的发展，并宣讲为公众提供海洋热浪的原因和后果的范围。该项目将探索北太平洋的海洋热浪行为，从2014-2016年起，热浪事件可能是生态上最大的影响力和经济影响力。使用单个Globigerina Bulloides有孔虫的元素/钙比，该项目将产生海面温度的分布，可以使用分位数量式分析从中从中提取海洋热浪的指纹。通过在多个核心地点的中期温暖期间将重建从全新世进行比较，该项目将表征北太平洋海洋热浪在工业前的行为和未来气候的地质类似物的行为，从而为范围的范围提供了范围，以改善NSF的构建范围，并提供了一个有价值的目标。影响审查标准。