Stable isotope, ion concentrations, and mineral dust data from northwestern Greenland ice core (SIGMA-D)

We present stable isotope data (d18O and dD), concentrations of dust and ions, and morphology (size and circularity) and composition of mineral dust from the SIGMA-D ice core, northwestern Greenland. To determine the annual layers of the SIGMA-D ice core, variations of stable isotope ratios, ion concentrations, and the concentration of tritium were measured in the upper 112.87m (from 1654 to 2013). The chronology of the ice core is also presented in this dataset. The concentration of dust was measured from 1915 to 2003 using a CFA system. The size bins cover the range from 1.5 to 15.0 micro m. The morphology and composition of mineral dust was obtained for every 5-year interval from 1915 to 2013 using a scanning electron microscope (SEM) equipped with an energy dispersive X-ray spectrometer (EDS). In total, 150 particles were randomly chosen from each sample.本数据集公开了格陵兰西北部SIGMA-D冰芯的稳定同位素数据（d¹⁸O与dD）、粉尘与离子浓度数据，以及矿物粉尘的形貌（粒径与圆度）与组分特征。 为确定SIGMA-D冰芯的年层序列，研究人员对冰芯上部112.87米（对应年代范围1654年至2013年）的稳定同位素比值、离子浓度及氚浓度变化进行了测定。本数据集同时提供了该冰芯的年代标尺。 本研究采用CFA系统对1915年至2003年的粉尘浓度开展测定，其粒径分级区间覆盖1.5至15.0微米。 研究人员于1915年至2013年间以每5年为一个采样间隔，利用配备能量色散X射线能谱仪（EDS）的扫描电子显微镜（SEM）获取了矿物粉尘的形貌与组分数据。每个样品均随机选取150颗粉尘颗粒进行分析。