Annual microparticle and ion fluxes in the Jurassic, Sherman Island and Sky-Blu ice cores (1992-2019 CE)

Microparticle measurements were calibrated using using polystyrene particle standards. Microparticle data from the topmost part of the JUR ice core is missing due to an instrument failure (equivalent to the interval 2011.5-2013 CE). Samples for ion analyses were run several times and calibrated against three working standards. Missing data are presented as -999.99.

微粒测量采用聚苯乙烯（polystyrene）微粒标准品完成校准。JUR冰芯最顶部的微粒数据因仪器故障出现缺失，对应时间区间为公元2011.5年至2013年。离子分析所用样品经多次上机检测，并以三种工作标准品进行校准。缺失数据以-999.99进行标注。