Dataset for brown carbon absorption estimation

Ths data file named 'dN_dlogD_rBC_10min.csv' contains the number size distribution (dN/dlogD) of refractory black carbon measured using a single-particle soot photometer (SP2) in urban Beijing during a period from 16 Feb. 2014 to 15 Mar. 2014. The dataset is recorded line by line at a time resolution of 10 min. The first line of this file is the header line. There are 204 columns for the data file with the first 5 columns indicating the date and time of each record and the following 199 columns representing the dN/dlogD values at corresponding diameter. The dN/dlogD values with diameter lower than 70 nm and larger than 600 nm were excluded in the analysis according to the detection limit of SP2.The data file named 'MieAbs_3hMoveAVG_Base950nm_C3.5_RI1.50_all.CSV' stored the absorption coefficient with a time resolution of 1 hour. The record is stored line by line initial with a header line. The first 4 columns indicate the date and time of each record. The following 7 columns are the measured absorption coefficient at 7 wavelengths (370, 470, 520, 590, 660, 880, 950 nm) using an aethalometer (AE31), then followed by the bare BC absorption coefficient at the 7 wavelengths and coated BC absorption coefficient at the 7 wavelengths. The last column represents the mean relative coating thickness of BC particles.该命名为"dN_dlogD_rBC_10min.csv"的数据文件，包含了2014年2月16日至2014年3月15日期间，在北京城区使用单颗粒炭黑光度计（single-particle soot photometer, SP2）测得的难熔黑碳（refractory black carbon, rBC）的数谱分布（dN/dlogD）。数据集以逐行形式存储，时间分辨率为10分钟。该文件首行为表头行，共包含204列：前5列为每条记录的日期与时间信息，后续199列代表对应粒径下的dN/dlogD数值。根据SP2的检测限，本分析中已剔除粒径小于70 nm与大于600 nm的dN/dlogD数值。 该命名为"MieAbs_3hMoveAVG_Base950nm_C3.5_RI1.50_all.CSV"的数据文件，存储了时间分辨率为1小时的吸收系数数据，同样以逐行形式存储，首行为表头行。其前4列为每条记录的日期与时间信息；后续7列为使用黑碳仪（aethalometer, AE31）在7个波长（370、470、520、590、660、880、950 nm）下测得的吸收系数，随后依次为7个波长下的纯BC吸收系数与包覆型BC吸收系数；最后一列为BC颗粒的平均相对包覆厚度。