IPCC scenarios

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Scope

What are the future trends of selected indicators, as defined in the IPCC climate report?

Table. Global mean warming relative to 1980-1999 (Intergovernmental Panel on Climate Change, 2007, p. 763). Overview of main primary driving forces in 1990, 2020, 2050 and 2100 – values for the illustrative scenario (Nakicenovic, 2000, p. 49). Overview of main secondary driving forces in 1990, 2020, 2050 and 2100 – values for the illustrative scenario (Nakicenovic, 2000, p. 51).
Years	2011-2030	2046-2065	2080-2099	2180-2199	2011-2030	2046-2065	2080-2099	2180-2199
	A1B				B1
Global mean warming [°C]	0.69	1.75	2.65	3.36	0.66	1.29	1.79	2.1
Years	1990	2020	2050	2100	1990	2020	2050	2100
Population [billion]	5.3	7.4	8.7	7.1	5.3	7.6	8.7	7
World GDP [10^12 US$1990/ year]	21	56	181	529	21	53	136	328
Per capita income ratio: developed countries and economies in transition (Annex I) to developing countries (Non-Annex-I)	16.1	6.4	2.8	1.6	16.1	8.4	3.6	1.8
Final energy intensity [10^6 J/US$1990]	16.7	9.4	5.5	3.3	16.7	8.8	4.5	1.4
Primary energy [10^18 J/year]	351	711	1347	2226	351	606	813	514
Share of coal in primary energy [%]	24	23	14	4	24	22	21	8
Share of zero carbon in primary energy [%]	18	16	36	65	18	21	30	52

Varies depending on the index.

The IPCC estimates are the best that exist. Therefore, it is plausible to believe them as such, unless specific concerns are raised.

The result is identical to the IPCC data.