The Mid-Subatlantic climatological period lasted from 175 to 750 AD.
Notes on verification
Confirmed verbatim in Wikipedia and several derivative/mirror sources, but all appear to trace back to a single original citation ('Gumerman'), so independent corroboration is limited despite multiple sources repeating it. [tier=unverified indep_score=0.3 clusters=4 claim_tier=notable] [rescored 2026-09-15: curated origin-host map (PR #65); unclassified hosts no longer scored as aggregators]
Sources
- Climate of ancient Rome (wikipedia)
- https://encyclopedia.pub/entry/29101 (corroboration)
- https://www.ancient-history-sites.com/roman/context/climate/ (corroboration)
- https://handwiki.org/wiki/Earth:Climate_of_ancient_Rome (corroboration)
- https://www.detailedpedia.com/wiki-Climate_of_ancient_Rome (corroboration)