Table 3.3.
The global production and atmospheric burden of aerosols from natural and human-derived sources.
| Mass emission |
Mass burden |
Number produced |
Number |
|
|---|---|---|---|---|
| 1012 g/yr | Tg | per year | Burden | |
| Carbonaceous aerosols | ||||
| Primary organic (0–2 μm) | 95 | 1.2 | – | 310 × 1024 |
| Biomass burning | 54 | – | 7 × 1027 | – |
| Fossil fuel | 4 | – | – | – |
| Biogenic | 35 | 0.2 | – | – |
| Black carbon (0–2 μm) | 10 | 0.1 | – | 270 × 1024 |
| Open burning and biofuel | 6 | – | – | – |
| Fossil fuel | 4.5 | – | – | – |
| Secondary organic | 28 | 0.8 | – | – |
| Biogenic | 25 | 0.7 | – | – |
| Anthropogenic | 3.5 | 0.08 | – | – |
| Sulfates | 200 | 2.8 | 2 × 1028 | – |
| Biogenic | 57 | 1.2 | – | – |
| Volcanic | 21 | 0.2 | – | – |
| Anthropogenic | 122 | 1.4 | – | – |
| Nitrates | 18 | 0.49 | – | – |
| Industrial dust, etc. | 100 | 1.1 | – | – |
| Sea salt | ||||
| d < 1 μm | 180 | 3.5 | 7.4 × 1026 | – |
| d = 1–16 μm | 9940 | 12 | 4.6 × 1026 | – |
| Total | 10,130 | 15 | 1.2 × 1027 | 27 × 1024 |
| Mineral (soil) dust | ||||
| < 1 μm | 165 | 4.7 | 4.1 × 1025 | – |
| 1–2.5 μm | 496 | 12.5 | 9.6 × 1025 | – |
| 2.5–10 μm | 992 | 6 | – | – |
| Total | 1600 | 18 ± 5 | 1.4 × 1026 | 11 × 1024 |