The chemical composition of nonrefractory submicron aerosol particles was measured at the Puy‐de‐Dôme (PUY) station (1,465 m a.s.l) during 2015 using a Time‐of‐Flight Aerosol Chemical Speciation Monitor (ToF‐ACSM). These aerosol chemistry measurements are combined with online black carbon (BC) measurements to provide an overview of the submicron aerosol composition. Averaged over the entire year, and normalized to standard temperature and pressure, organic aerosol (OA) dominates the PM1 concentration during all seasons and within all air mass types (2.12 ± 1.73 µgm⁻³), and is responsible for summertime increases in aerosol concentration. Highest mass concentrations were measured during the summer, when air masses were arriving over mainland Europe and lowest in the winter months (when most air masses were of Atlantic origin). OA source apportionment was performed separately during each season, using the Source Finder (SoFi) interface for the multilinear engine. The PUY site, situated at 1,465 m a.s.l, although mainly sampling in the atmospheric boundary layer, it is sometimes sampling in the lower free troposphere (FT), providing the opportunity to identify the characteristics of FT aerosol. In order to accurately identify these sampling periods, the methodology described in Farah et al. (2018), during the same time period (2015/2016), was applied to the data. During this period, FT air masses are sampled approximately 20% of the time. This work provides, on one hand, a description of long‐term aerosol chemical properties at a remote regional site in central Europe and, on the other hand a characteristic chemical signature of FT aerosols over this region. This data can be used to improve our understanding of the transport and aging properties of aerosols at regional observation sites.

中文翻译：

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法国中部的高度气溶胶测量：季节性，来源和自由圈/边界层隔离

使用飞行时间气溶胶化学形态监测器（ToF‐ACSM）在2015年的Puy-de-Dôme（PUY）站（1,465 m asl）上测量了非难熔亚微米气溶胶颗粒的化学成分。这些气溶胶化学测量结果与在线黑碳（BC）测量结果结合在一起，提供了亚微米气溶胶成分的概述。全年平均，并归一化至标准温度和压力，有机气溶胶（OA）在所有季节和所有空气质量类型（2.12±1.73 µgm ^-3）中均占PM1浓度的主导。），并导致夏季气溶胶浓度增加。在夏季，当空气团到达欧洲大陆时测量到最高的质量浓度，而在冬季月份（当大多数空气团来自大西洋时）测得的质量浓度最低。使用多线性引擎的Source Finder（SoFi）界面，在每个季节分别进行OA源分配。PUY站点位于1465 m asl，尽管主要在大气边界层采样，但有时在较低的对流层（FT）采样，从而提供了识别FT气溶胶特征的机会。为了准确地识别这些采样周期，在Farah等人（2007年）中描述了该方法。（2018），是同期（2015/2016）的数据。在这段时期，FT空气质量大约有20％的时间被采样。这项工作一方面提供了对中欧偏远地区站点长期气溶胶化学特性的描述，另一方面提供了该地区FT气溶胶的特征性化学特征。此数据可用于增进我们对区域观测点气溶胶的运输和老化特性的了解。