Climate Change 2001: Working Group I: The Scientific Basis

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II.1: Anthropogenic Emissions

II.1.1: CO₂ emissions (PgC/yr)

CO2 emissions from fossil fuel and industrial processes (PgC/yr)
Year	A1B	A1T	A1FI	A2	B1	B2	A1p	A2p	B1p	B2p	IS92a
2000	6.90	6.90	6.90	6.90	6.90	6.90	6.8	6.8	6.8	6.8	7.1
2010	9.68	8.33	8.65	8.46	8.50	7.99	9.7	8.4	7.7	7.9	8.68
2020	12.12	10.00	11.19	11.01	10.00	9.02	12.2	10.9	8.3	8.9	10.26
2030	14.01	12.26	14.61	13.53	11.20	10.15	14.2	13.3	8.4	10.0	11.62
2040	14.95	12.60	18.66	15.01	12.20	10.93	15.2	14.7	9.1	10.8	12.66
2050	16.01	12.29	23.10	16.49	11.70	11.23	16.2	16.4	9.8	11.1	13.7
2060	15.70	11.41	25.14	18.49	10.20	11.74	15.9	18.2	10.4	11.6	14.68
2070	15.43	9.91	27.12	20.49	8.60	11.87	15.6	20.2	10.1	11.8	15.66
2080	14.83	8.05	29.04	22.97	7.30	12.46	15.0	22.7	8.7	12.4	17.0
2090	13.94	6.27	29.64	25.94	6.10	13.20	14.1	25.6	7.5	13.1	18.7
2100	13.10	4.31	30.32	28.91	5.20	13.82	13.2	28.8	6.5	13.7	20.4

CO2 emissions from deforestation and land use (PgC/yr)
Year	A1B	A1T	A1FI	A2	B1	B2	A1p	A2p	B1p	B2p	IS92a
2000	1.07	1.07	1.07	1.07	1.07	1.07	1.6	1.6	1.6	1.6	1.3
2010	1.20	1.04	1.08	1.12	0.78	0.80	1.5	1.6	0.8	1.8	1.22
2020	0.52	0.26	1.55	1.25	0.63	0.03	1.6	1.7	1.3	1.6	1.14
2030	0.47	0.12	1.57	1.19	-0.09	-0.25	0.7	1.5	0.7	0.3	1.04
2040	0.40	0.05	1.31	1.06	-0.48	-0.24	0.3	1.3	0.6	0.0	0.92
2050	0.37	-0.02	0.80	0.93	-0.41	-0.23	-0.2	1.2	0.5	-0.3	0.8
2060	0.30	-0.03	0.55	0.67	-0.46	-0.24	-0.3	0.7	0.7	-0.2	0.54
2070	0.30	-0.03	0.16	0.40	-0.42	-0.25	-0.3	0.4	0.8	-0.2	0.28
2080	0.35	-0.03	-0.36	0.25	-0.60	-0.31	-0.4	0.3	1.0	-0.2	0.12
2090	0.36	-0.01	-1.22	0.21	-0.78	-0.41	-0.5	0.2	1.2	-0.2	0.06
2100	0.39	0.00	-2.08	0.18	-0.97	-0.50	-0.6	0.2	1.4	-0.2	-0.1

CO2 emissions - total (PgC/yr)
Year	A1B	A1T	A1FI	A2	B1	B2	A1p	A2p	B1p	B2p	IS92a
2000	7.97	7.97	7.97	7.97	7.97	7.97	8.4	8.4	8.4	8.4	8.4
2010	10.88	9.38	9.73	9.58	9.28	8.78	11.2	10.0	8.5	9.7	9.9
2020	12.64	10.26	12.73	12.25	10.63	9.05	13.8	12.6	9.6	10.5	11.4
2030	14.48	12.38	16.19	14.72	11.11	9.90	14.9	14.8	9.1	10.3	12.66
2040	15.35	12.65	19.97	16.07	11.72	10.69	15.5	16.0	9.7	10.8	13.58
2050	16.38	12.26	23.90	17.43	11.29	11.01	16.0	17.6	10.3	10.8	14.5
2060	16.00	11.38	25.69	19.16	9.74	11.49	15.6	18.9	11.1	11.4	15.22
2070	15.73	9.87	27.28	20.89	8.18	11.62	15.3	20.6	10.9	11.6	15.94
2080	15.18	8.02	28.68	23.22	6.70	12.15	14.6	23.0	9.7	12.2	17.12
2090	14.30	6.26	28.42	26.15	5.32	12.79	13.6	25.8	8.7	12.9	18.76
2100	13.49	4.32	28.24	29.09	4.23	13.32	12.6	29.0	7.9	13.5	20.3