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

摘要该项目是对来自北极和北大西洋亚极地的一套全面的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学测量、海冰观测和气候指数。该项目的数据集将包括：“Unaami”数据集的一个子集，以及一组相对未知的、来自北大西洋亚极地（北欧海、格陵兰岛、冰岛、法罗群岛和挪威）和北极的世纪尺度时间序列，这对美国社区来说是新的。这些数据将使用一套全面的先进时频统计方法进行组织和分析，包括过去50-200年来海洋-冰-大气系统的有组织的时空变异和协变模式。工作重点将放在北极/北大西洋涛动（AO/NAO）以外的模态上，包括多年代际低频涛动。为了进一步了解其机制，综合将使用第一个耦合大气-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，该坐标系已针对北极和北大西洋亚极地进行了分辨率优化。

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.