PINATUBO'S CONTRIBUTIONS

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• Cooler air temperatures over Northern Hemisphere by up to 2°C in summer of 1992

• Warmer air temperatures over Northern Hemisphere by up to 3°C in the winters of 1991–92

• Cooling of ≈-0.5°C in the northern high-latitude growing seasons of 1992–1993

• Global average CO2 concentration rose by 25 parts per million

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• Annual mean temperature in the boreal zone increased by 0.8°C

• Annual precipitation in the boreal zone increased by 9.7 mm

• Global warming was slowed after the Pinatubo eruption because of the cooling effects of the volcanic aerosols

• Produced an increased carbon sink that contributed to the slowdown in the global rate of atmospheric CO2 concentration growth