| Sunspot Number | Event | SST | Volcanic Eruptions in Indonesia and the Philippines | Sulfur (SO2, sulfate) | Toxic Chemicals (HF, HCl, H2SO4, SO2) | Iron (Fe) | Harmful Algal Blooms | Fishery Damage |
| High | El Niño | High | High | High | High | Low | Low | Low |
| Low | La Niña | Low | Low | Low | Low | High | High | High |