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| | Climate Change 2001: The Scientific Basis (Site not responding. Last check: 2007-11-02) |
 | | The three A1 groups are distinguished by their technological emphasis: fossil intensive (A1FI), non-fossil energy sources (A1T), or a balance across all sources (A1B) (where balanced is defined as not relying too heavily on one particular energy source, on the assumption that similar improvement rates apply to all energy supply and end-use technologies). |
 | | It is a world with continuously increasing global population, at a rate lower than A2, intermediate levels of economic development, and less rapid and more diverse technological change than in the A1 and B1 storylines. |
 | | For three of the four marker scenarios (A1B, A2, and B2) temperature change from the draft and marker scenarios are very similar. |
| www.grida.no /climate/ipcc_tar/wg1/029.htm (1297 words) |
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