Polar front migrated from Arctic to Portugal over 100,000 years. During the Eemian (125,000 years ago), polar front was far north near the Arctic Circle During Late Glacial Maximum (18,000 years ago), polar front migrated to off the coast of Portugal This represents enormous migration of the boundary between polar and tropical air masses
The boundary between polar and tropical air masses shifted dramatically over the past 125,000 years. During the warm Eemian period, the polar front sat near the Arctic Circle, but by the Late Glacial Maximum 18,000 years ago, it had migrated south to off the coast of Portugal. During the Younger Dryas cold period, this front occupied an intermediate position between these extremes, representing an enormous climatic boundary shift.
Key Facts
- During the Eemian (125,000 years ago), polar front was far north near the Arctic Circle
- During Late Glacial Maximum (18,000 years ago), polar front migrated to off the coast of Portugal
- This represents enormous migration of the boundary between polar and tropical air masses
- During Younger Dryas, polar front position was intermediate between these extremes
Source: CLEAR EVIDENCE How The Most Significant Climatic Disruption in Human History Shaped Our Modern World by The Randall Carlson