Since its creation, IPCC has regularly prepared assessment reports on available scientific information on climate change and has proposed possible response strategies. The First IPCC Assessment Report (FAR) was presented in 1990 and was devoted to creating an inventory of climate change. The Second Assessment Report (SAR) was presented in 1995 and coupled with the initial Special Report on future Emissions Scenarios (SRES). The future emission scenarios, also known as IS92, were subsequently used in climate simulation models in order to quantitatively assess their impacts. A follow-up Third Assessment Report (TAR) was presented in 2001 and the updated version of the SRES scenarios of the TAR was definitively adopted in the Fourth Assessment Report (AR4), which was presented in 2007.
The global CO2 emissions for the six SRES scenarios, A1B, A2, B1 and B2, A1FI and A1T are presented in Fig. 10.3. The IS92a scenario derived from the Second Assessment Report (SAR) is also presented. Obviously, the most optimistic scenarios are A1T and B1, where clean energy technologies are developed. At the
other extreme, the scenarios A1FI and A2 demonstrate a huge increase in CO2 emissions, since economic development is not coupled with environmentally friendly policies and technologies.
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Do we really want the one thing that gives us its resources unconditionally to suffer even more than it is suffering now? Nature, is a part of our being from the earliest human days. We respect Nature and it gives us its bounty, but in the recent past greedy money hungry corporations have made us all so destructive, so wasteful.