Table 1 Average κCCN and mass concentrations of WSOM, inorganic species, and biogenic molecular tracers, together with the ambient temperature in each season for the year 2013. Individual seasonal category is defined as each three months period: Spring (March–May), Summer (June–August), Autumn (September–November), and Winter (December–February).
Spring | Summer | Autumn | Winter | |
|---|---|---|---|---|
κCCN | 0.46 ± 0.03 | 0.47 ± 0.05 | 0.40 ± 0.06 | 0.45 ± 0.03 |
WSOM (µg m−3) | 0.82 ± 0.26 | 0.66 ± 0.27 | 1.07 ± 0.64 | 0.76 ± 0.30 |
NO3 − (µg m−3) | 0.07 ± 0.03 | 0.03 ± 0.01 | 0.05 ± 0.02 | 0.07 ± 0.03 |
SO4 2− (µg m−3) | 1.65 ± 0.41 | 1.89 ± 0.68 | 1.35 ± 0.57 | 1.19 ± 0.51 |
Na+ (µg m−3) | 0.03 ± 0.02 | 0.01 ± 0.00 | 0.02 ± 0.00 | 0.02 ± 0.01 |
NH4 + (µg m−3) | 0.57 ± 0.12 | 0.56 ± 0.20 | 0.45 ± 0.19 | 0.36 ± 0.10 |
K+ (µg m−3) | 0.04 ± 0.01 | 0.02 ± 0.01 | 0.04 ± 0.02 | 0.04 ± 0.01 |
2-methyltetrols (ng m−3) | 0.12 ± 0.06 | 2.32 ± 1.49 | 0.72 ± 1.16 | 0.04 ± 0.02 |
Pinic acid (ng m−3) | 1.01 ± 0.17 | 0.36 ± 0.19 | 1.16 ± 0.52 | 0.77 ± 0.14 |
3-MBTCA (ng m−3) | 1.66 ± 1.09 | 3.29 ± 1.50 | 3.34 ± 1.94 | 0.23 ± 0.05 |
Sucrose (ng m−3) | 0.57 ± 0.67 | 0.42 ± 1.25 | 0.02±0.01 | 0.00 ± 0.00 |
Trehalose (ng m−3) | 0.03 ± 0.03 | 0.06 ± 0.03 | 0.09 ± 0.05 | 0.00 ± 0.00 |
Arabitol (ng m−3) | 0.10 ± 0.08 | 0.10 ± 0.05 | 0.21 ± 0.10 | 0.04 ± 0.01 |
Mannitol (ng m−3) | 0.09 ± 0.09 | 0.13 ± 0.07 | 0.16 ± 0.11 | 0.01 ± 0.00 |
Temperature (°C) | 4.5 ± 3.8 | 18.2 ± 3.2 | 12.2 ± 5.4 | −3.1 ± 3.2 |
