P2C2: Monsoon 21K--A Global Monsoon Synthesis, Reconstruction, and Data-Model Comparison

该项目的目的是进行一个重要的新的代理合成，重建和数据模式比较全球季风系统从末次冰期最大（LGM）到现在。具体而言，该项目将综合全球季风区的水文气候记录，重建过去21，000年的季风变化，并形成数据模型比较的基础。这一努力将有助于描述季风对不断变化的全球能量平衡的反应，开发社区数据库资源，并建立模型改进的试验平台。这个季风记录数据库（从区域到全球范围）将使研究人员能够重建季风强度和范围，测试将半球温度和环流与热带水文气候联系起来的假设，并测试过去的季风变化在模型中的模拟程度。这些重建将被用来研究季风系统如何应对北方冰盖的崩溃，以及纬度温度梯度的变化。 潜在的更广泛影响包括开发和管理过去2.1万年的全球季风数据库，并促进对过去和未来季风动力学的理解。该数据库将向更广泛的古气候界公开提供。其他潜在的更广泛的包括开发一个教学工具包和举办一个教师培训讲习班，使k-12教室和教师参与当地部落民族（在北方亚利桑那州）。该项目将支持两名早期职业科学家和一名博士生，PI将从代表性不足的少数民族中招募。该奖项反映了NSF的法定使命，并通过使用基金会的智力价值和更广泛的影响审查标准进行评估，被认为值得支持。

This project aims to conduct a major new proxy synthesis, reconstruction, and data-model comparison for global monsoon systems from the Last Glacial Maximum (LGM) to the present. Specifically, this project will synthesize hydroclimate records from global monsoon regions, reconstruct monsoon variability over the past 21,000 years, and form the basis of a data-model comparison. This effort will help characterize monsoon responses to changing global energy balance, develop a community database resource, and build a testbed for model improvement. This database of monsoon records (from regional to global scales) will enable the researchers to reconstruct the monsoon strength and extent, to test hypotheses linking hemispheric temperature and circulation with tropical hydroclimate, and to test how well past monsoon variability is simulated in models. These reconstructions will be used to then investigate how monsoon systems responded to the collapse of Northern Hemisphere ice-sheets, and changes in latitudinal temperature gradients. The potential Broader Impacts include developing and curating a global monsoon database for the past 21 thousand years and advancing the understanding of past and future monsoon dynamics. The database will be made publicly available to the wider paleoclimate community. Other potential Broader include developing a teaching-kit and holding a teacher-training workshop to engage k-12 classrooms and teachers on local tribal nations (in Northern Arizona). The project would support two early career scientists and one PhD student that the PIs will recruit from underrepresented minorities.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.