ACROSS_LISA_RambForest_AETH-eBC_PM1_1-Min_L2-station_processed

The aerosol equivalent black carbon (eBC) concentration was measured at the surface level by a dual spot aethalometer (AE33, Magee Sci) within the PEGASUS mobile platform located in Rambouillet, France – ACROSS project. The instrument was operated at 2 l min–1 through a certified PM1 inlet (Leckel GmbH) located approximately 2 m above ground level. Data were acquired continuously at 1-min time resolution. The time indicated in the datafile is the start time of the 1-min interval. The eBC data reported by the instrument at 880 nm were considered. Data are reported to the Standard Temperature and Pressure (eBC_STP) conditions (STP, T=273.15 K P=1013.25 mbar). The uncertainty (10%) given in the dataset is based on (Cuesta-Mosquera et al., 2021) and accounts for instrumental noise. Raw data were controlled manually to check periods when specific conditions prevented to do measurements or affected the quality of the measurements (power cut, disfunctioning). Data in correspondence of these periods are identified as -9999.999 and flagged with a M (missing). Detailed information on the dataset can be provided upon request to the author and the principal investigator.

本数据集依托位于法国朗布依埃市ACROSS项目的PEGASUS移动监测平台，采用双点式黑碳仪（dual spot aethalometer, AE33, Magee Sci）开展地表等效黑碳（equivalent black carbon, eBC）浓度原位测量。该仪器以2 L·min⁻¹的采样流量，通过经认证的PM1采样切割器（Leckel GmbH）进行采样，采样入口距地面高度约2米。数据以1分钟时间分辨率连续采集，数据文件中标记的时间为对应1分钟采样时段的起始时刻。本数据集采用该仪器在880 nm波长下测得的等效黑碳数据，并统一校正至标准温压（Standard Temperature and Pressure, STP）条件下——即温度273.15 K、压强1013.25 mbar，对应校正后数据记为eBC_STP。数据集给出的10%测量不确定度参考自Cuesta-Mosquera等人2021年的研究，其误差来源为仪器噪声。研究人员已对原始数据开展人工核查，识别出因断电、仪器故障等特定情况导致无法正常测量或影响数据质量的时段，该时段对应数据标记为-9999.999，并添加M（缺失）标识。若需获取该数据集的详细信息，可联系本文作者及项目首席研究员提出申请。