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X decadal continental surface temperature anomalies c

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Unformatted text preview: ot; Figure 18.x Multi-model means of surface warming (relative to 1980-1999) for the scenarios A2, A1B and B1, shown as continuations of the 20th-century simulations. (source: IPCC report) Special Report on Emission Scenarios (SRES): A1: very rapid economic growth, global population peaking in mid-century then declining, rapid introduction of new and more efficient technologies. A1FI: fossilintensive; AIT: non-fossil energy sources; A1B: balance across all sources. A2: very heterogeneous world, self-reliance and preservation of local identities, economic development regionally oriented and per capita economic growth and technological change fragments and slower than other scenarios. B1: convergent world with same global population as in A1 but with rapid change in economic structures toward service and information economy, reduction of material intensity, clean resource-efficient technologies; solutions with economic, social and environmental sustainability; B2: local solutions to economic, social and environmental sustainability; world population growing slower than A2; economic development with less rapid and more Summary Technical diverse technological change than in B1 and A1. CONTINENTAL SURFACE TEMPERATURE ANOMALIES: OBSERVATIONS AND PROJECTIONS FFigure TS.29. Decadal meanmean continental surface temperatin observations and simulationsobservations to 2005 igure 18.x Decadal continental surface temperature anomalies (°C) ure anomalies (ºC) in for the period 1906 and in projections for 2001 to 2050. Anomalies are calculated from the 1901 to 1950 average. The black lines represent the obse and simulations for the period 1906 to 2005 and in projections for 2001 to 2050. Anomalies rvations and the red and from the 1901 to 1950 average. The bold as in Figure TS.22 observations (i.e., red are calculatedblue bands show simulated average temperature anomaliesline representsfor the 20th centurywhile includes anthropogenic and natural forcings and blue includes only natural forcings). The yell...
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