The year profile follows a decreasing trend from the cold months (APO: 2497 ± 2340 ng/m 3 ; SCT: 2731 ± 2545 ng/m 3 ) (where the highest consumption of fossil fuels and biomass burning tends to occur, as well as the lowest wind speeds and mixing heights), passing to lower concentrations during spring and early summer (APO: 1936 ± 1235 ng/m 3 ; SCT: 1481 ± 1524 ng/m 3 ) (where highest wind speeds occur, as well as mixing heights), with a minimum around the wet-summer time.
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Assessing black carbon sources with aethalometer data and ambient ΔBC/ΔCO ratios analysis.
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