IPCC
Emissions Scenarios

Summary of Projected
Global Warming Impacts
(2070-2099, as
compared to 1961-1990)

State-wide Temp-erature Rise

• 90% loss in Sierra snow pack
• 22-30 inches of sea level rise
• 3-4 times as many heatwave days in major urban centers
• 2.5 times the number critically dry years
• 4-6 times as many heat-related deaths in major urban centers
• 20% increase in electricity demand
• Increase in days meteorologiclaly conducive to ozone formation

Higher Warming Range:
8-10.4 ºF

• 70- 80 % loss in Sierra snow pack
• 14-22 inches of sea level rise
• 2.5-4 times as many heatwave days in major urban centers
• 2-6 times as many heat-related deaths for major urban centers
• 75-85% increase in days meteorologically conducive to ozone formation
• 2-2.5 times the number critically dry years
• 11% increase in electricity demand
• 30% decrease in forest yields (pine)
• 55% increase in the expected risk of large wildfires

Medium Warming Range:
5.5-
7.9 ºF

• 30-60 % loss in Sierra snow pack
• 6-14 inches of sea level rise
• 2-2.5 times as many heatwave days in major urban centers
• 2-3 times as many heat-related deaths for major urban centers
• 25-35% increase in days meteorologically conducive to ozone formation
• Up to 1-1.5 times the number critically dry years
• 3-6 % increase in electricity demand
• 7-14% decrease in forest yields (pine)
• 10-35% increase in the risk of large wildfires

Lower Warming Range:
3.0-5.4 ºF