Figure 1.
Reference numbers are as follows: 1. Keeling and Bacastow (1977); 2. Perry and Lansberg (1977); 3. Siegenthaler and Oeschger (1978); 4. Rotty (1979); 5. Niehaus and Williams (1979); 6. Nordhaus (1979); 7. JASON (1979); 8. Colombo and Bernadini (1979); 9. Rotty and Marland (1980); 10. Bacastow and Keeling (1981); 11. Sundquist and Plummer (1981); 12. Haefele (1981); 13. Lovins et al. (1981); 14. Edmonds and Reilly (1983); 15. Nordhaus and Yohe (1983); 16. Rose et al. (1983); 17. Seidel and Keyes (1983); 18. Edmonds et al. (1984); 19. Reister (1984a); 20. Reister (1984b); 21. Manne (1984); 22. Williams et al. (1984); 23 Edmonds et al. (1985); 24. Chandler (1985); and 25. Rogner (1985).