Compare two periods

Pick two years independently and compare absorption rates side by side. Simulations run in parallel at their real pace.

This page: pick two years independently (no global slider). Simulations run in parallel at their equivalent average pace.

Trends to compare (no JavaScript)

20-year trend by year
Year	20-year trend (ZJ/yr)	Hiroshima bombs / s	Annual change (ZJ)
1980	3.6	1.82	—
1985	4.1	2.07	—
1990	2.6	1.31	—
1995	1.2	0.61	—
2000	4.1	2.07	—
2005	7.8	3.94	—
2010	10.2	5.15	—
2015	10.0	5.05	—
2019	9.9	5.00	—
2020	9.8	4.95	—
2021	9.7	4.90	+15.2
2022	10.0	5.07	+19.0
2023	10.7	5.41	+15.2
2024	11.2	5.65	+13.8
2025	11.7	5.92	+22.9 ± 8
2026 (projection)	12.2	6.16	—

2025 / 1980 ratio, trend to trend: ×3.3. 20-year trend: least-squares slope over the 20 years ending in the displayed year (IAP/CAS, IAPv4.2 file, January 2026). Annual change: difference between two annual means, from 2021 onward; ± is the published uncertainty when available. 1 bomb = 62.76 TJ.

1980

6,544 bombs/h

2025

21,303 bombs/h

1.82 bombs/s

3.6

ZJ/yr

5.92 bombs/s

11.7

ZJ/yr

×3.3

Each second, the right column receives ~5.9 energy-bombs vs ~1.8 on the left. Both columns show each year's 20-year trend: the pace is ×3.3.

IAP/CAS values (lab) · also compare NOAA/NCEI and Copernicus.