Collaborative Research: P2C2--Tree-Ring Reconstructions of Western North Pacific Climate Dynamics

总的来说，本研究旨在通过使用新的和现有的树木年轮数据集，对跨北太平洋气候的时空变异性提供更综合的理解。具体来说，研究人员试图回答以下科学问题：1)在中世纪气候异常和小冰期等事件中，北太平洋大气-海洋环流在过去的几个世纪到千年中是如何变化的；2)不同的太平洋年代际变率（PDV）古重建是否可以调和？3)相对于过去几个世纪，最近一个时代（例如1976-77年太平洋变暖，状态转变）的PDV是否独特？4) PDV是否存在稳健的和优先的年代际或多年代际振荡模式？5)热带地区与北太平洋两岸北部高纬度地区之间是否存在广泛的联系？6)内部和外部强迫在多个时间尺度上如何影响过去的北太平洋气候？潜在的更广泛的影响包括支持早期研究者和与俄罗斯同事的强有力和实质性的科学合作，包括美国和俄罗斯之间的外国学生交换。

This research, generally, seeks to provide a more integrative understanding of the spatiotemporal variability of trans-North Pacific climate through the use of new and existing data sets of tree rings.Specifically, the researchers seek to answer the following scientific questions: 1) How has the North Pacific atmosphere-ocean circulation varied over the past several centuries to millennium during such events as the Medieval Climate Anomaly and the Little Ice Age; 2) Can different paleoreconstructions of Pacific Decadal Variability (PDV) be reconciled? 3) Is the PDV during the recent era (e.g. 1976-77 Pacific warming, regime shift) unique relative to past centuries? 4) Do robust and preferred decadal to multidecadal oscillatory modes of PDV exist? 5) Is the PDV basin-wide with robust linkages between the tropics and higher northern latitudes on both sides of the North Pacific? and 6) How have internal and external forcings impacted past North Pacific climate on multiple timescales?The potential broader impacts include supporting an early investigator and strong and substantive scientific collaboration with Russian colleagues including foreign exchange of students between the U.S. and Russia.