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Characterization of aerosol pollution events in France using ground-based and POLDER-2 satellite data

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Academic year: 2017

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Fig. 1. Temporal evolution of 24-h averaged fine particulate mass concentration (PM2.5 in µg/m3) during year 2003 over Lille (North of France)
Fig. 2. Locations of (Red dots) the 28 PM2.5 stations and (Blue dots) the 10 AERONET/PHOTONS Sun photometer sites used in this study.
Fig. 3. Regression lines between POLDER derived AOT at 440 nm and Sun photometer integrated size distribution for the total size distribution (r ≤15 µm in black, Volume concentration = 0.25 AOT POLDER + 0.05, R=0.66, RMS=0.04) and the submicron  frac-tion
Table 1 presents the minimum and maximum AOT for each of the 10 bins as well as the percentage of the  correspond-ing PM2.5 values that fit into the two respective EPA  cate-gories
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