The close relationships between the abrupt ups and downs of solar activity and of temperature that I have identified occur locally in coastal Greenland; regionally in the Arctic Pacific and north Atlantic; and hemispherically for the whole circum-Arctic, suggesting that changes in solar activity drive Arctic and perhaps even global climate.
"It's the Sun, stupid!: New direct evidence demonstrate that changes in solar activity influence climate". Essay by Willie Soon, March 9, 2009.