The Impacts and Costs of Climate Change Page: 46
The following text was automatically extracted from the image on this page using optical character recognition software:
The Impacts and Costs of Climate Change
Distribution of CO2 concentration in 2100, A2 scenario
Parts per thousand
The mean temperature is 4.1C above pre-industrial by 2100. The figure below shows the global mean
temperature over time over time compared to the base year of 2000; add 0.5C to get global mean
temperature compared to pre-industrial.
Figure 15. Global mean temperature over time for the A2 Scenario
DegC above Global mean temperature, A2 scenario
:900 2050 2100 2150 2200
Under the A2 scenario, the mean impacts of climate change are $73 trillion (US$ 2000 prices)-
equivalent to Euro 74 trillion in 2000 prices (note a trillion is a million million52). This is based on a
time horizon of 2200 and discounted back to a net present value. The PAGE model uses a range of
parameters, including discount rate and equity weighting53. The range of results is shown below (a
small number of runs that gave impacts above $200 trillion are not shown on the graph, but are
included in the mean impacts of $73 trillion).
52 We use the definitions of a billion = one thousand million, and a trillion = a thousand billion (million million).
53 The mean values are a PRTP of 2%, and an elasticity of utility with respect to consumption of minus 1.
AEA Technology Environment, August 2005
I I I
Here’s what’s next.
This text can be searched. Note: Results may vary based on the legibility of text within the document.
Tools / Downloads
Get a copy of this page or view the extracted text.
Citing and Sharing
Basic information for referencing this web page. We also provide extended guidance on usage rights, references, copying or embedding.
Reference the current page of this Text.
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/m1/57/: accessed September 25, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; .