1750 to 2010 Refractory Black Carbon Deposition from a Global Ice-Core Array, Arctic, Antarctic, and alpine regions

Refractory black carbon (rBC) aerosols in air and precipitation result from incomplete combustion. Prior to 18th century industrialization, the primary emission sources were wildfires and agricultural fires. After industrialization, fossil fuel burning has become an important emission source as well. Because these aerosols are import contributors to Earth’s radiative forcing both in the air and when deposited to bright surfaces such as fresh snow, quantifying past rBC emissions is critical to accurate Earth System Modeling. This data set contains 1750 to 2010 annual rBC depositional fluxes measured in a global array of 31, mostly polar ice cores. They were used (Zhang et al., Nature Communications, 2024) to reconstruct atmospheric rBC emissions using the atmospheric chemical transport GEOS-Chem. Details on the rBC measurement methods and chronology development are provided in the associated references for the individual ice core records.

大气与降水中的难降解黑碳（Refractory black carbon, rBC）气溶胶源自不完全燃烧过程。在18世纪工业革命之前，其主要排放源为野火与农业焚烧。工业革命之后，化石燃料燃烧也成为了重要的排放源。由于这类气溶胶无论是在大气中还是沉降至新鲜积雪等亮面地表时，都会对地球辐射强迫产生重要影响，因此量化历史rBC排放量对精准的地球系统建模至关重要。本数据集包含1750年至2010年的年度rBC沉积通量数据，这些数据源自全球范围内31个冰芯（多数为极地冰芯）的观测结果。研究团队借助GEOS-Chem大气化学传输模型，利用这些数据重建了大气rBC排放量（Zhang等，《自然·通讯》，2024年）。各冰芯记录的相关参考文献中，详细记载了rBC测量方法与冰芯年代序列构建的相关细节。