Climate is accumulating 4 Hiroshima atomic bombs worth of heat per second
Volcanic eruptions release sulfate aerosols that reflect sunlight and cause temporary global cooling, though their impact on modern warming trends since the 1970s is minimal. Recent studies indicate that increased sulfate aerosols from Chinese industrialization have temporarily masked the full extent of greenhouse gas warming. Unlike short-lived aerosols, carbon dioxide persists in the atmosphere for centuries, ensuring long-term climate impacts.
- ▪Large volcanic eruptions can cool the planet by 0.1°–0.3°C for several years by reflecting incoming sunlight.
- ▪Early 20th-century warming was partly due to a recovery from previous periods of heavy volcanic activity.
- ▪Chinese coal-burning doubled between 2003 and 2007, accounting for 77% of the global increase in sulfate aerosols during that period.
- ▪Sulfate aerosols fall out of the atmosphere quickly, whereas carbon dioxide remains for centuries or longer.
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| Original publisher | 4 Hiroshimas |
| Canonical URL | https://4hiroshimas.info/ |
| Publication time | Tue, 29 Sep 2026 12:14:26 +0000 |
| Retrieval time | 2026-09-29T13:41:21.786Z |
| Last seen | 2026-09-29T13:41:21.786Z |
| Headline source | Publisher (no WeSearch rewrite) |
| Excerpt source | publisher body |
| Excerpt method | First ~120 words (~800 chars) of extracted publisher body, fair-use limited. |
| Summary | WeSearch · cerebras-chat (WeSearch summarizer) |
| Summary source text | contentText |
| Citation coverage | Summary is a WeSearch-generated derivative; primary citation is the original publisher URL. |
| Cluster | u0fNEyPMTeK7 · 1 stories |
| Cluster logic | Grouped by semantic title/content similarity across sources within a rolling window. Same-publisher template collisions are excluded from coverage comparison. |
| Ranking reason | Story pages are not engagement-ranked. Hub feeds use recency, with optional source-diversified chronological ordering (cap consecutive stories per source). No personalized ranking. |
| Publisher visit | Yes — open original |
| Substitutes article? | No — link-out required for full text |
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| Indexing | May the item be indexed (stored, ranked, made findable)? | Allowed |
| Snippet | May a short excerpt of the publisher's text be shown? | Allowed |
| AI summary | May WeSearch generate its own short summary of the article? | Limited |
| Retrieval / RAG | May the content be exposed for third-party retrieval-augmented generation? | Not asserted |
| Model training | May the content be used to train AI models? | Not asserted |
| Commercial reuse | May the content be reused commercially? | Not permitted |
Basis: Derived from the published RSS/Atom feed. Contact: [email protected]. Reviewed: 2026-07-24.
Opening excerpt (first ~120 words) tap to expand
Aerosols Volcanoes emit sulfate aerosols which reflect incoming sunlight, cooling the planet. A large volcanic eruption such as the Pinatubo eruption in 1991 can have a global cooling effect of 0.1°–0.3°C (0.18°–0.54°F) for several years 10. However, mega-eruptions or a series of eruptions can have a cooling effect that take decades to wear off, giving a perceived warming effect as temperatures return to normal. Scientists have studied past volcanoes11, particularly over the past few centuries, and found that early 20th century warming resulted, in part, from a recovery from earlier periods of heavy vulcanism. In short, a lack of volcanic activity had some part in temperature rise over the first half of the 20th century.
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Excerpt limited to ~120 words for fair-use compliance. The full article is at 4 Hiroshimas.
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