applet-magic.com
Thayer Watkins
Silicon Valley
& Tornado Alley
USA

Climate Change 2001:
The Assessment Report of the Intergovernmental Panel on Climate Change (IPCC) on Projections

Chapter 9 in the third assessment report of the IPCC, Climate Change 2001: The Scientific Basis gives the projections of future climate change.

Projections of Change in Global Average Surface Air Temperature (SAT) from 1961-1990 Average
ScenarioEffectsEnd PeriodAverageRange
IS92aGreenhouse gases
plus sulfates
2021-2050+1.3°C0.8 to 1.7°C
IS92aGreenhouse gases
only
2021-20501.6°C+1.0 to +2.1°C
SRES A2Greenhouse gases
only
2021-2050+1.1°C+0.5 to 1.4°C
SRES B2Greenhouse gases
only
2021-20501.2°C+0.5 to 1.7°C
SRES A2Greenhouse gases
only
2071-2100+3.0°C+1,3 to 4.5°C
SRES B2Greenhouse gases
only
2071-2100+2.2°C0.9 to 3.4°C

Here are some of the qualitative projections of the consequences of increased greenhouse gases which IPCC deems virtually certain to very likely because all of the models agree on them:

There are other less certain forecasts which IPCC nevertheless deems very likely.


HOME PAGE OF applet-magic
HOME PAGE OF Thayer Watkins