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
B2: local solutions to economic, social and environmental sustainability; world
population growing slower than A2; economic development with less rapid and more Summary
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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