Collaborative Research: Synthesis of Modes of Ocean-Ice-Atmosphere Covariability in the Arctic System from Multivariate Century-Scale Observations

AbstractThe project是对北极和副极地北大西洋的一组综合性长时间序列进行综合统计分析。这些多变量记录包括气象和海洋测量、海冰观测和气候指数。该项目数据集将包括：几十年到百年规模的“Unaami”数据收集的一个子集，以及一组相对未知的世纪规模的时间序列，这些时间序列来自亚极地北大西洋（北欧海，格陵兰岛，冰岛，法罗群岛和挪威）和北极，对美国社区来说是新的。将使用一整套先进的时间-频率统计方法，包括过去50-200年海洋-冰-大气系统中有组织的时间和空间变化和协变模式，对这些数据进行组织和分析。这项工作将侧重于北极/北大西洋涛动（AO/NAO）以外的模式，包括数十年低频振荡。为了进一步了解机制，综合将使用来自第一个耦合大气-海洋环流模式（AOGCM）的多世纪模式运行的新输出，该模式具有独立的大气和海洋拉伸坐标系，这些坐标系已针对北极和副极地北大西洋进行了分辨率优化。

AbstractThe project is an integrated statistical analysis of a comprehensive set of long time series from the Arctic and subpolar North Atlantic. These multivariate records include meteorological and oceanographic measurements, sea ice observations and climate indices. The project data set will comprise: a subset of the multidecadal to century-scale 'Unaami' Data Collection, and a set of relatively unknown, century-scale time series from the subpolar North Atlantic (Nordic Seas, Greenland, Iceland, Faroe Islands and Norway) and Arctic that is new to the US community. These data will be organized and analyzed using a comprehensive set of advanced time-frequency statistical methods including organized temporal and spatial patterns of variability and covariability in the ocean-ice-atmosphere system over the past 50-200 years. The work will focus on modes other than the Arctic / North Atlantic Oscillation (AO/NAO), including the multidecadal low-frequency oscillation. To further understanding of the mechanisms, the synthesis will use new output from multi-century model runs from the first coupled atmosphere-ocean general circulation model (AOGCM) with independent stretched-coordinate systems for the atmosphere and ocean that have been resolution-optimized for the Arctic and subpolar North Atlantic.