Solar cycle · ≈ 1790–1830
The Dalton Minimum
A period of low but not absent solar activity around the turn of the nineteenth century, less deep than the Maunder Minimum. Like other grand minima it is reconstructed from sunspot counts and from cosmogenic isotopes recorded in ice cores and tree rings.
Highlights
- ›A shallower grand minimum around 1800
The Sun, its layers & phenomena
Across solar physics
Knowledge connections
- Associated withThe Maunder Minimum
- Associated withThe Sun
- Associated withThe Solar Cycle
- Associated withThe Maunder Minimum
Sources
The primary and reference sources this topic draws on.
- NASANational Aeronautics and Space Administration
Mission data, planetary science, space telescopes, and public-domain imagery.
Most NASA-produced imagery is in the public domain; individual items are checked for usage terms before publication.