Climatic Change

, Volume 34, Issue 3–4, pp 337–368 | Cite as

Learning from integrated assessment of climate change

  • M. Granger Morgan
  • Hadi Dowlatabadi
Integrated Assessment


The objective of integrated assessment of climate change is to put available knowledge together in order to evaluate what has been learned, policy implications, and research needs. This paper summarizes insights gained from five years of integrated assessment activity at Carnegie Mellon. After an introduction, in Section 2 we ask: who are the climate decision makers? We conclude that they are a diffuse and often divergent group spread all over the world whose decisions are primarily driven by local non-climate considerations. Insights are illustrated with results from the ICAM-2 model. In Section 3 we ask: what is the climate problem? In addition to the conventional answer, we note that in a democracy the problem is whatever voters and their elected representatives think it is. Results from studies of public understanding are reported. Several other specific issues that define the problem, including the treatment of aerosols and alternative indices for comparing greenhouse gases, are discussed. In Section 4 we discuss studies of climate impacts, focusing on coastal zones, the terrestrial biosphere and human health. Particular attention is placed on the roles of adaptation, value change, and technological innovation. In Section 5 selected policy issues are discussed. We conclude by noting that equity has received too little attention in past work. We argue that many conventional tools for policy analysis are not adequate to deal with climate problems. Values that change, and mixed levels of uncertainty, pose particularly important challenges for the future.


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  1. Arrhenius, S.: 1896, ‘On The Influence of Carbonic Acid in the Air Upon the Temperature on the Ground’, Phil. Magazine 41, 237–275.Google Scholar
  2. Barth, M. C. and Titus, J. G. (eds.): 1984, Greenhouse Effect and Sea Level Rise: A Challenge for this Generation, Van Nostrand, New York.Google Scholar
  3. Bostrom, A., Fischhof, B. et al.: 1992, ‘Characterizing Mental Models of Hazardous Processes: A Methodology and an Application to Radon’, J. Social Issues 48(4), 85–100.Google Scholar
  4. Bostrom, A., Morgan, M. G. et al.: 1994, ‘What Do People Know About Global Climate Change? 1: Mental Models’, Risk Analysis 14(6), 959–970.Google Scholar
  5. Charlson, R. J., Langer, J. et al.: 1991, ‘Perturbation of the Northern Hemisphere Radiative Balance by Backscattering from Anthropogenic Sulfate Aerosols’, Tellus 43AB, 152–163.Google Scholar
  6. Charlson, R. J. and Wigley, T. M. L.: 1994, ‘Suflate Aerosol and Climate Change’, Sci. Amer. 270(2), 28–35.Google Scholar
  7. Cifuentes, L. A.: 1995, Social Cost of Air Pollution Related Mortality, PHD, Carnegie Mellon University.Google Scholar
  8. Cifuentes, L. A. and Lave, L. B.: 1996, ‘Association of Daily Mortality and Air Pollution in Philadelphia, 1983–1988’, J. Air and Waste Management Ass. in press.Google Scholar
  9. Corell, R. W.: 1993, Statement of Robert W. Corell, Chairman, CEES Subcommittee on Global Change Research and Assistent Director for Geosciences National Science Foundation, before the Committee on Science, Space and Technology, Subcommittee on Space, House of Representatives.Google Scholar
  10. Dixon, R. K., Brown, S. et al.: 1993, ‘Carbon Pools and Flux of Global Forest Ecosystems’, Science 263, 185–190.Google Scholar
  11. Dowlatabadi, H.: 1995a, ‘Integrated Assessment Models of Climate Change: An Incomplete Overview’, Energy Policy 23(4/5), 289–296.Google Scholar
  12. Dowlatabadi, H.: 1995b, Groping for Control: A Study in Sequential Climate Policy Decision-Making, Society for Risk Analysis, Waikiki, HA.Google Scholar
  13. Dowlatabadi, H., Hahn, R. et al.: 1993, ‘How Reliably Can Climate Change Impacts on Electric Utilities Be Assessed?’, Utility Policy 3 (July), 261–268.Google Scholar
  14. Dowlatabadi, H. and Kandlikar, M: 1995, Key Uncertainties in Climate Change Policy: Results from ICAM-2, The 6th Global Warming Conf., San Francisco, CA.Google Scholar
  15. Dowlatabadi, H., Kopp, R. J. et al.: 1995, ‘Distributional and Environmental Consequences of Taxes on Energy: A Partial Equilibrium Model of U.S. Household Energy Demand’, Sustainable Economic Growth, JAI Press, Greenwich, CT, 203–235.Google Scholar
  16. Dowlatabadi, H. and Lave, L. B.: 1993, ‘Pondering Greenhouse Policy (Letter)’, Science 259, 1381.Google Scholar
  17. Dowlatabadi, H. and Morgan, M. G.: 1993a, ‘Integrated Assessment of Climate Change’, Science 259(5103), 1813.Google Scholar
  18. Dowlatabadi, H. and Morgan, M. G.: 1993b, ‘A Model Framework for Integrated Studies of the Climate Problem’, Energy Policy 21(3), 209–221.Google Scholar
  19. Dowlatabadi, H., Shevliakova, E. et al.: 1994, Issues in Evaluation of Ecosystem Change in Response to Global Change, Western Economic Association, Vancouver, BC, Canada.Google Scholar
  20. Dyson, F. J. and Marland, G.: 1979, ‘Technical Fixes for the Climate Effects of CO2’, Workshop on the Global Effects of Carbon Dioxide from Fossil Fuels, U.S. Department of Energy.Google Scholar
  21. Eckaus, R. S.: 1992, ‘Comparing the Effects of Greenhouse Gas Emissions on Global Warming’, The Energy J. 13(1), 25–35.Google Scholar
  22. Edmonds, J. A., Wise, M. et al.: 1994, ‘Advanced Energy Technologies and Climate Change: An Analysis Using the Global Change Assessment Model (GCAM)’, Pacific Northwest Laboratory, Richland, WA 99352.Google Scholar
  23. Emanuel, W. B., Shugart, H. H. et al.: 1985, ‘Climate Change and the Broad-Scale Distribution of Terrestrial Ecosystem Complexes’, Clim. Change 7, 29–43.Google Scholar
  24. Fischhoff, B.: 1991, ‘Value Elicitation: Is There Anything in There?’, Amer. Psychologist 46, 835–847.Google Scholar
  25. Gibbons, J. H.: 1993, Statement of the Honorable John H. Gibbons, Director Office of Science and Technology Policy before the Committee on Energy and Natural Resources United States Senate.Google Scholar
  26. Global Change Integrated Assessment Program (ed.): 1995, Degrees of Change, Department of Engineering and Public Policy, Carnegie Mellon University.Google Scholar
  27. Henrion, M. and Morgan, M. G.: 1985, ‘A Computer Aid for Risk and Other Policy Analysis’, Risk Analysis 5, 195–208.Google Scholar
  28. Houghton, J. T., Jenkins, G. J. et al. (eds.): 1990, Climate Change, The IPCC Scientific Assessment, Cambridge University Press, Cambridge.Google Scholar
  29. Jorgenson, D. W., Lau, L. J. et al. (1982), ‘The Transcendental Logarithmic Model of Aggregate Consumer Behavior’, Advan. Economertics, JAI Press, Greenwich, CT, 97–238.Google Scholar
  30. Jorgenson, D. W. and Slesnick, D. T.: 1987, ‘Aggregate Consumer and Household Equivalence Scales’, J. Business and Economic Statistics 5(2), 219–232.Google Scholar
  31. Jorgenson, D. W. Slesnick, D. T. et al. (1992), Carbon Taxes and Economic Welfare, Harvard University.Google Scholar
  32. Jorgenson, D. W., Slesnick, D. T. et al. (1988), ‘Two-Stage Budgeting and Exact Aggregation’, J. Business and Economic Statistics 6(3), 313–326.Google Scholar
  33. Jorgenson, D. W. and Wilcoxen, P. J.: 1990a, ‘Intertemporal General Equilibrium Modeling of US Environmental Regulations’, J. Policy Modeling.Google Scholar
  34. Jorgenson, D. W. and Wilcoxen, P. K.: 1990b, ‘Environmental Regulation and US Economic Growth’, Rand J. Economics 21(2), 314–340.Google Scholar
  35. Kahneman, D. and Tversky, A.: 1979, ‘Prospect Theory: An Analysis of Decision Under Risk’, Econometrica 47(2), 363–391.Google Scholar
  36. Kalkstein, L.: 1994, Direct Impacts on Cities, Heath and Climate Change, The Lancet, London, 26–28.Google Scholar
  37. Kalkstein, L. S. and Valimont, K. M.: 1987, ‘The Effect on Human Health’, in: Potential Effects of Future Climate Changes on Forest and Vegetation, Agriculture, Water Resources, and Human Health, U.S. Environmental Protection Agency, Washington, DC, 122–152.Google Scholar
  38. Kandlikar, M.: 1995, ‘On the Relative Role of Greenhouse Gases in Abatement Policies’, Energy Policy 23, 879–883.Google Scholar
  39. Kasperson, R. E., Renn, O. et al.: 1988, ‘The Social Amplification of Risk: A Conceptual Framework’, Risk Analysis 8(2), 177–187.Google Scholar
  40. Keith, D. W. and Dowlatabadi, H.: 1992, ‘A Serious Look at Geoengineering’, EOS 73(27), 289, 292–293.Google Scholar
  41. Kempton, W., Boster, J. S. et al.: 1995, Environmental Values in American Culture, MIT Press, Cambridge, MA.Google Scholar
  42. Kiehl, J. T. and Briegleb, B. P.: 1993, ‘The Relative Role of Sulfate Aerosols and Greenhouse Gases in Climate Forcing’, Science 260, 311–314.Google Scholar
  43. Lal, M., Cubasch, U., et al.: 1995, ‘Effect of Transient Increase of Greenhouse Gases and Sulphate Aerosols on Monsoon Climate’, Current Sci. 69(9), 752–763.Google Scholar
  44. Langer, J., Rodhe, H. et al.: 1992, ‘Anthropogenic Influence on the Distribution of Tropospheric Sulphate Aerosol’, Nature 359, 712–716.Google Scholar
  45. Lashof, D. and Ahuja, D.: 1990, ‘Relative Contributions of Greenhouse Gas Emissions to Global Warming’, Nature 344, 529–531.Google Scholar
  46. Lave, L. B.: 1988, ‘The Greenhouse Effect: What Government Actions are Needed’, J. Policy Analysis and Management (3), 460–470.Google Scholar
  47. Lave, L. B. and Dowlatabadi, H.: 1993, ‘Climate Change Policy: The Effects of Personal Beliefs and Scientific Uncertainty’, Environ. Sci. Technology 27(10), 1962–1972.Google Scholar
  48. Lave, L. B. and Vickland, K. H.: 1989, ‘Adjusting to Greenhouse Effects: The Demise of Traditional Cultures and the Cost to the USA’, Risk Analysis 9(3), 283–291.Google Scholar
  49. Loewenstein, G.: 1987, ‘Frames of Mind in Intertemporal Choice’, Management Sci. 34, 200–214.Google Scholar
  50. Loewenstein, G. and Mather, J.: 1988, ‘Dynamic Processes in Risk Perception’, Department of Social and Decision Sciences, Carnegie Mellon University.Google Scholar
  51. Lovins, A. B. and Lovins, L. H.: 1991, ‘Least Cost Climate Stabilization’, Annu. Rev. Energy, Annual Reviews Inc., Palo Alto, CA, pp. 433–531.Google Scholar
  52. Malanson, G. P.: 1993, ‘Comment on Modeling Ecological Response to Climate Change’, Clim. Change 23, 95–109.Google Scholar
  53. Manne, A. S. and Richels, R. G.: 1992, Buying Greenhouse Insurance - the Economic Costs of CO 2 Emission Limits, MIT Press, Boston, MA.Google Scholar
  54. Martens, W. J. M., Rotmans, J. et al: 1994, Climate Change and Malaria Risk, RIVM.Google Scholar
  55. Mitchell, J. F. B., Johns, T. C. et al.: 1995, ‘Climate Response to Increasing Levels of Greenhouse Gases and Sulfate Aerosols’, Nature 376, 501–504.Google Scholar
  56. Mitchell, R. C. and Carson, R. T.: 1989, Using Surveys to Measure Public Goods: The Contingent Valuation Method, Resources for the Future, Washington DC.Google Scholar
  57. Morgan, M. G. and Dowlatabadi, H.: 1994, Integrated Assessment of Climate Change: A Status Report on the Carnegie Mellon Program, Electric Power Research Institute, Integrated Systems Division.Google Scholar
  58. Morgan, M. G., Fischhoff, B. et al.: 1992, ‘Communicating Risk to the Public: First Learn what People Know’, Environ. Sci. Technol. 26(11), 2048–2056.Google Scholar
  59. Morgan, M. G. and Henrion, M.: 1990, Uncertainty: A Guide to Dealing With Uncertainty in Quantitative Risk and Policy Analysis, Cambridge University Press, New York.Google Scholar
  60. Morgan, M. G. and Keith, D.: 1995, ‘Subjective Judgments by Climate Experts’, Environ. Sci. Technol. 29(10), 468A-476A.Google Scholar
  61. Morgan, M. G. and Smuts, T.: 1994, Global Warming and Climate Change, Department of Engineering and Public Policy, Carnegie Mellon University, Pittsburgh, PA.Google Scholar
  62. National Research Council: 1992, Policy Implications of Greenhouse Warming: Mitigation, Adaptation, and the Science Base, National Academy Press, Washington, DC.Google Scholar
  63. Nichols, N.: 1994, ‘El Niño-Southern Oscillation and Vector-borne Diseases’, Health and Climate Change, The Lancet, London, pp. 21–22.Google Scholar
  64. Nordhaus, W. D.: 1977, ‘Economic Growth and Climate: The Carbon Dioxide Problem’, Amer Econ Rev 67(1), 341–346.Google Scholar
  65. Oravetz, M and Dowlatabadi, H.: 1995, Is There Autonomous Energy Efficiency Improvement? Department of Engineering and Public Policy, Carnegie Mellon University.Google Scholar
  66. Pandis, S. N., Russell, L. M. et al.: 1994, ‘The Relationship Between DMS Flux and CCN Concentration in Remote Marine Regions’, J. Geophys. Res. 99, 16945–16957.Google Scholar
  67. Patwardhan, A. P., Sinha, R., and Small, M. J.: 1994, ‘Decision-making for Coastal Protection with Uncertain Future Sea Level and Storm Damage’, EPP, Carnegie Mellon University, Pittsburgh, PA.Google Scholar
  68. Peck, S. C. and Teisberg, T. J.: 1992, ‘CETA: A Model for Carbon Emissions Trajectory Assessment’, Energy J. 13(1), 55–77.Google Scholar
  69. Pilinis, C., Pandis, S. N. et al.: 1995, ‘Sensitivity of Direct Climate Forcing by Atmospheric Aerosols to Aerosol Size and Composition’, J. Geophys. Res. 100(D9), 18,739–18,754.Google Scholar
  70. Prentice, C., Cramer, W. et al.: 1992, ‘A Global Biom Model Based on Plant Physiology and Dominance, Soil Properties and Climate’, J. Biogeogr. 19, 117–134.Google Scholar
  71. Read, D., Bostrom, A. et al.: 1994, ‘What Do People Know About Global Climate Change? 2. Survey Studies of Educated Lay People’, Risk Analysis 14(6), 971–982.Google Scholar
  72. Rogers, D. J. and Packer, M. J.: 1994, ‘Vector-borne Diseases, Models, and Global Change’, Heath and Climate Change, The Lancet, London, pp. 19–21.Google Scholar
  73. Rotmans, J.: 1990, IMAGE: An Integrated Model to Assess the Greenhouse Effect, Kluwer, Dordrecht.Google Scholar
  74. Schelling, T. C.: 1978, Micromotives and Macrobehavior, Norton, New York.Google Scholar
  75. Scheraga, J. S. and Sussman, F.: 1994, Preliminary Assessment of the Benefits to the US of Avoiding, or Adapting to Climate Change, US Environmental Protection Agency, Washington DC.Google Scholar
  76. Schneider, S. H.: 1989, ‘The Greenhouse Effect: Science and Policy’, Science 243(4894), 771–781.Google Scholar
  77. Schneider, S. H.: 1996, ‘The Future of Climate: Potential for Interaction and Surprises’, in Downing, T. E. (ed.), Climate Change and World Food Security, NATO ASI Series, Springer-Verlag, Heidelberg, vol. 137, pp. 77–113.Google Scholar
  78. Schneider, S. H. and Chen, R. S.: 1980, ‘Carbon Dioxide Warming and Coastline Flooding: Physical Factors and Climate Impact’, Annu. Rev. Energy 5, 107–140.Google Scholar
  79. Shevliakova, E. and Dowlatabadi, H.: 1994, Probabilistic Modeling of Ecosystem Changes Due to Climate Change, Proc. Air and Waste Management Ass. Int. Specialty Conf.: Global Climate Change Science, Policy, and Mitigation Strategies, Phoenix, AZ, April 5–8.Google Scholar
  80. Smith, T. M., Leemans, R. et al.: 1992, ‘CO2-induced Climate Change: Comparison of Four Scenarios Based on General Circulation Models’, Clim. Change 21, 367–384.Google Scholar
  81. Sonnenblick, R.: 1995, A Framework for Improving the Cost-Effectiveness of Demand-Side Management Program Evaluations, PhD, Carnegie Mellon University.Google Scholar
  82. Titus, J. G. (ed.): 1986, Effects of Changes in Stratospheric Ozone and Global Climate, Vol. 4: Sea Level Rise, Environmental Protection Agency, Washington, DC.Google Scholar
  83. Titus, J. G., Park, R. A. et al.: 1991, ‘Greenhouse Effect and Sea Level Rise: The Cost of Holding Back the Sea’, Coastal Management 19(2), 172–204.Google Scholar
  84. Tokai, A., Yuasa, A. et al.: 1995, Climate Change Scenario Analysis: Assessment of Alternatives Using Multi-Attribute Utility Measures, Society for Risk Analysis, Waikiki, HA.Google Scholar
  85. Tschang, F.T. and Dowlatabadi, H.: 1995, ‘A Bayesian Technique for Refining, the Uncertainty in Global Energy Model Forecasts’, Int. J. Forecasting 11, 43–61.Google Scholar
  86. U.S. Environmental Protection Agency: 1992, Agricultural Futures Project, Overview and Summary, US Environmental Protection Agency, Washington, DC.Google Scholar
  87. Waggoner, P. E.: 1994, How Much Land Can Ten Billion People Spare for Nature? Council for Agricultural Science and Technology.Google Scholar
  88. West, J.: 1994, Evaluation of Non-structural Coastal Management Under Uncertain Physical Conditions: A Case Study at Duck, NC, M.S., Carnegie Mellon University.Google Scholar
  89. Weyant, L, Davidson, O. et al.: 1996, Integrated Assessment of Climate Change: An Overview and Comparisons of Approaches and Results, IPCC Working Group III.Google Scholar
  90. Yohe, G.: 1990, ‘The Cost of Not Holding Back the Sea: Toward a National Sample of Economic Vulnerability’, Coastal Management 18, 403–432.Google Scholar

Copyright information

© Kluwer Academic Publishers 1996

Authors and Affiliations

  • M. Granger Morgan
    • 1
  • Hadi Dowlatabadi
    • 1
  1. 1.Carnegie Mellon UniversityPittsburghU.S.A.

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