1. Carbon Dioxide CO 2 RF = 1.66 W/m 2

2. Methane CH 4 RF = 0.48 W/m 2

3. Nitrous Oxide N 2 O RF = 0.16 W/m 2

4. Halocarbons i.e. CFCs RF = 0.34 W/m 2

5. Stratosphere Water H 2 O RF = 0. 07 W/m 2

6. Troposphere Ozone O 3 RF = 0. 35 W/m 2

7. Surface Albedo (Soot) RF = 0. 1 W/m 2

8. Linear Contrails RF = 0.0 1 W/m 2

9. Solar Output RF = 0.12 W/m 2

10. Surface Albedo (Land Use) RF = - 0.2 W/m 2

11. Aerosols (Direct albedo) RF = - 0.5 W/m 2

12. Aerosols (Cloud albedo) RF = - 0.7 W/m 2

13. Stratosphere Ozone O 3 RF = - 0.7 W/m 2