Continuous Antarctic Carbon monoxide (CO) record from Dyer Plateau ice core from 1820 to 1995 CE

Continuous ice core carbon monoxide (CO) mixing ratios are presented for three West Antarctic Cores (Jurassic, Bryan Coast, and Dyer Plateau). Data cover from 1820 CE to 1995 CE. For each core, data are presented integrated at 10-second intervals from an original acquisition rate of 4 Hz. Data were measured continuously utilising Optical Feedback Cavity Enhanced Spectroscopy connected to a continuous ice core melting system at the British Antarctic Survey. A smoothed spline composed of the bottom 5th percentile of each record is also presented. A percentile re-sampling method is required to remove the impact of in situ production. The spline is used to interpret Southern Hemisphere CO variability from the pre-industrial with a particular focus on biomass burning.

本数据集提供了三根南极西部冰芯（ice core）的连续一氧化碳（carbon monoxide, CO）混合比数据，涉及的冰芯分别为侏罗纪冰芯、布莱恩海岸冰芯与戴尔高原冰芯。数据的时间覆盖范围为公元1820年至1995年。针对每一根冰芯，数据均以10秒为间隔进行积分整合，其原始采样频率为4赫兹（Hz）。所有数据均由英国南极调查局（British Antarctic Survey）采用与连续冰芯熔融系统相连的光反馈腔增强光谱技术（Optical Feedback Cavity Enhanced Spectroscopy）连续采集获得。本数据集同时提供了由每条记录的最低5%分位数数据构建的平滑样条曲线（smoothed spline）。需采用分位数重采样方法以消除原位生成效应的影响。该平滑样条曲线被用于解析南半球一氧化碳自工业革命前至今的变化特征，研究重点聚焦于生物质燃烧活动的影响。