- Slide 1 of a sequence of 3 about climate modelling, aiming to answer the question: what are the causes of changes in global mean temperature observed since the early 1900s (shown in red on this slide)?
- The output from the Hadley Centre climate model, using 'natural' changes such as changes in the output of the sun and the results of volcanic emissions is shown by the green band in the slide above.
- This clearly does not agree with observations (shown in red on this slide) , particularly since 1970.
Source: Climate Change and the Greenhouse Effect: a briefing from the Hadley Centre.
