The North Atlantic Oscillation is the dominant atmospheric driver of North Atlantic climate variability with phases corresponding to droughts and cold spells in Europe. Here, we exploit a suggested anti-correlation of North Atlantic Oscillation-phase and north-eastern North Atlantic primary productivity by investigation of south-eastern Norwegian Sea sediment cores spanning the last 8000 years. Age model uncertainties between 2 and 13 years for the period 1992–1850 AD allows for the proxy to observational data calibration. Our data suggest that Ca/Fe core-scanning results reflect sedimentary CaCO₃ variability in the region. Cross-correlating the Ca/Fe record with nearby phytoplankton counts and dissolved O₂ data suggests that Ca/Fe can be used as a proxy for primary productivity variability in the region. Our data support an anti-correlation of primary productivity to the winter North Atlantic Oscillation index. Hence, we propose a sub-decadally resolved palaeo-North Atlantic Oscillation reconstruction based on an open-ocean record spanning the last 8000 years.

北大西洋涛动是北大西洋气候变化的主要大气驱动因素，其阶段对应于欧洲的干旱和寒冷季节。在这里，我们通过研究挪威东南海过去8000年的沉积物芯，研究了北大西洋涛动相与东北北大西洋初生生产力之间的反相关关系。在1992年至1850年之间，年龄模型的不确定性介于2到13年之间，可以替代观测数据的校准。我们的数据表明，Ca / Fe岩心扫描结果反映了该地区的沉积CaCO ₃变异性。Ca / Fe记录与附近浮游植物数和溶解的O _2的互相关数据表明，Ca / Fe可以用作该地区主要生产力变化的代表。我们的数据支持初级生产力与冬季北大西洋涛动指数的反相关。因此，我们基于过去8000年的开放海洋记录，提出了年代际分解的古北大西洋涛动重建方案。