The Impacts and Costs of Climate Change Page: 48
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The Impacts and Costs of Climate Change
Figure 18. Global mean temperature over time for the 550 ppm scenario
Global mean temperature, '550' scenario
This leads to a mean net present value of Euro 42 trillion (2000 prices, estimated from $42 trillion),
down from Euro 74 trillion in the A2 scenario, mainly because of the big difference in temperature
Figure 19. Distribution of total impacts based on the 550 ppm Scenario using the PAGE model
Distribution of total impacts, '550' scenario
Scenario 450 CO2 ppm (-550 ppm CO2 equivalent)
Because of the stimulation of natural CO2 that is included in the PAGE model the scenario does not
actually stabilise at 450ppm. Mean CO2 concentration is about 512ppm by 2100 (550ppm by 2150,
590ppm by 2200). Under this scenario, mean damage is reduced to a net present value of Euro 32
trillion (2000 value: estimated from $32 trillion).
AEA Technology Environment, August 2005
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Watkiss, Paul; Downing, Tom; Handley, Claire & Butterfield, Ruth. The Impacts and Costs of Climate Change, text, September 2005; Oxford, England. (digital.library.unt.edu/ark:/67531/metadc29337/m1/59/: accessed April 26, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; .