Collaborative Research: P2C2--High-Resolution Reconstruction of Last Millennium North American Arctic Temperatures Using Quantitative Wood Anatomy

研究小组的目标是使用定量的木材解剖学来开发北极北美林线过去温度的长而高分辨率的替代记录，并将这些记录应用于过去一千年的环境重建。从木材定量解剖获得的高精度年内信息可能有助于研究人员特别针对替代气候敏感度的季节性窗口，以更好地解决年际气候变异性和最近的趋势，并准确确定极端事件的时间，包括火山喷发后的降温。从这些记录中获得的一系列季节性信息将被用于数据同化框架内，以产生过去一千年北美高纬度地区温度和相关大气环流场的增强气候场重建。潜在的更广泛的影响包括促进一名女性树状气候学博士生的职业生涯，聘请STEM K-12教师进行实地考察，与研究地区的土著社区进行深思熟虑的接触，以及改进亚利桑那州树轮实验室的外展材料。该奖项反映了NSF的法定使命，并通过使用基金会的智力优势和更广泛的影响审查标准进行评估，被认为值得支持。

The research team aims to use quantitative wood anatomy to develop long high-resolution proxy records of past temperature from the Arctic North American tree-line and apply these to environmental reconstructions over the last millennium. The resulting high precision intra-annual information available from quantitative wood anatomy may aid researchers to specifically target seasonal windows of proxy climate sensitivity to better resolve both interannual climate variability and recent trends and precisely identify the timing of extreme events, including the cooling following volcanic eruptions. The array of seasonal information available from these records will be used within a data assimilation framework to produce enhanced climate field reconstructions of temperatures and associated atmospheric circulation fields over the last millennium for high latitude North America.The potential Broader Impacts include promoting the career of a female dendroclimatology doctoral student, engaging STEM K-12 teachers in fieldwork, thoughtful engagement with indigenous communities in the study region, and improved outreach materials at the Tree Ring lab in AZ.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.