Abstract
As the debate on potential climate change continues, it is becoming increasingly clear that the main concerns to the general public are the potential impacts of a change in the climate on societal and biophysical systems. In order to address these concerns researchers need realistic, plausible scenarios of climate change suitable for use in impacts analysis. It is the purpose of this paper to present a downscaling method useful for developing these types of scenarios that are grounded in both General Circulation Model simulations of climate change, and in situ station data. Free atmosphere variables for four gridpoints over the Missouri, Iowa, Nebraska, Kansas (MINK) region from both control and transient simulations from the GFDL General Circulation Model were used with thirty years of nearby station data to generate surface maximum and minimum air temperatures and precipitation. The free atmosphere variables were first subject to a principal components analysis with the principal component (PC) scores used in a multiple regression to relate the upper-air variables to surface temperature and precipitation. Coefficients from the regression on station data were then used with PC scores from the model simulations to generate maximum and minimum temperature and precipitation. The statistical distributions of the downscaled temperatures and precipitation for the control run are compared with those from the observed station data. Results for the transient run are then examined. Lastly, annual time series of temperature for the downscaling results show less warming over the period of the transient simulation than the time series produced directly from the model.
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Crane, R. G. and Hewitson, B. C.: 1998, 'Doubled CO2 Precipitation Changes for the Susquehanna Basin: Down-Scaling from the Genesis General Circulation Model', Int. J. Climatol. 18, 65-76.
Easterling, D. R., Karl, T. R., Mason, E. H., Hughes, P. Y., Bowman, D. P., Daniels, R. C., and Boden, T. A.: 1996, United States Historical Climatology Network (U.S. HCN) Monthly Temperature and Precipitation Data, Carbon Dioxide Information and Analysis Center, Oak Ridge, TN, Environmental Science Division, ORNL, p. 82.
Easterling, D. R., Horton, B., Jones, P. D., Peterson, T. C., Karl, T. R., Parker, D. E., Salinger, M. J., Razuvayev, V., Plummer, N., Jamason, P., and Folland, C. K.: 1997: 'Maximum and Minimum Temperature Trends for the Globe', Science 277, 364-367.
Easterling, W. E. III, Crosson, P. R., Rosenberg, N. J., McKenney, M. S., Katz, L. A., and Lemon, K. M.: 1993, 'Paper 2: Agricultural Impacts and Response to Climate Change in the Missouri, Iowa, Nebraska, Kansas (MINK) Region', Clim. Change 24, 23-61.
Hewitson, B. C.: 1995, 'The Development of Climate Downscaling: Techniques and Applications', in Preprints of the 6th International Meeting on Statistical Climatology, Galway, IR, June, 1995, pp. 33-36.
Intergovernmental Panel on Climate Change (IPCC), 1996. Climate Change 1995. The Science of Climate Change: Contribution of Working Group I to the Second Assessment Report of the Intergovernmental Panel on Climate Change, Houghton, J. T., Meira Filho, L. G., Callander, B. A., Harris, N., Kattenberg, A., and Maskell, K., (eds.), Cambridge University Press, Cambridge, U.K., p. 572.
Giorgi, F., Bates, G. T. and Nieman, S. J.: 1993, 'The Multi-Year Surface Climatology of a Regional Atmospheric Model over the Western United States', J. Clim. 6, 75-95.
Glahn, H. R.: 1985, 'Statistical Weather Forecasting', in Murphy, A. H. and Katz, R.W. (eds.), Probability, Statistics, and Decision Making in the Atmospheric Sciences, Westview Press, Boulder, CO, pp. 289-336.
Groisman, P. Ya. and Easterling, D. R.: 1994, 'Variability and Trends of Total Precipitation and Snowfall over the United States and Canada', J. Clim. 7, 184-205.
Karl, T. R., Wang, W-C., Schlesinger, M. E., Knight, R. W., and Portman, D.: 1990, 'A Method of Relating General Circulation Model Simulated Climate to the Observed Local Climate. Part I: Seasonal Statistics', J. Clim. 3, 1053-1079.
Karl, T. R., Jones, P. D., Knight, R. W., Kukla, G., Plummer, N., Razuvayev, V., Gallo, K. P., Lindseay, J., Charlson, R. J., and Peterson, T. C.: 1993, 'Asymmetric Trends of Daily Maximum and Minimum Temperature', Bull. Amer. Meteorol. Soc. 74, 1007-1023.
Katz, R. W. and Brown, B. G.: 1992, 'Extreme Events in a Changing Climate: Variability Is More Important and Averages', Clim. Change 21, 289-302.
Klein, W. H.: 1982, 'Statistical Weather Forecasting on Different Time Scales', Bull. Amer. Meteorol. Soc. 63, 170-176.
Klein, W. H., Lewis, B. M., and Enger, I.: 1959, 'Objective Prediction of Five-Day Mean Temperatures During Winter', J. Meteorol. 16, 672-682.
Manabe, S., Stouffer, R. J., Spelman, M. J., and Bryan, K.: 1991, 'Transient Response of a Coupled Ocean-Atmosphere Model to Gradual Changes of Atmospheric CO2. Part I: Annual Mean Response', J. Climate 4, 785-818.
Manabe, S., Spelman, M. J., and Stouffer, R. J.: 1992, 'Transient Response of a Coupled Ocean-Atmosphere Model to Gradual Changes of Atmospheric CO2. Part II: Seasonal Response', J. Climate 5, 105-126.
Matyasovszky, I. and Bogardi, I.: 1995, 'Estimating Probability Distribution of Surface Climatic Variables from Free-Atmosphere Quantities', in Preprints of the 6th International Meeting on Statistical Climatology, Galway, IR, June, 1995, pp. 49-52.
McGinnis, D. L.: 1997, 'Estimating Climate-Change Impacts on Colorado Plateau Snowpack Using Downscaling Methods', Prof. Geog. 49, 117-125.
Mearns, L. O., Rosenzweig, C., and Goldberg, R.: 1996, 'The Effect of Changes in Daily and Interannual Climatic Variability on Ceres-Wheat: A Sensitivity Study', Clim. Change 32, 257-292.
Palecki, M. A., Leathers, D. J., and Robinson, D. A.: 1996, 'A Hybrid Approach to Projecting Future Water Budget Changes in the United States Great Plains', in Preprints for the Seventh Symposium on Global Change Studies, January 28–February 2, 1996, Atlanta, GA, American Meteorological Society, Boston, MA, pp. 189-191.
Riha, S. J., Wilks, D. S., and Simoens, P.: 1996, 'Impact of Temperature and Precipitation Variability on Crop Model Predictions', Clim. Change 32, 293-311.
Robinson, P. J. and Finkelstein, P. L.: 1991, 'The Development of Impact-Oriented Climate Scenarios', Bull. Amer. Meteorol. Soc. 72, 481-490.
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Easterling, D.R. Development of Regional Climate Scenarios Using a Downscaling Approach. Climatic Change 41, 615–634 (1999). https://doi.org/10.1023/A:1005425613593
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DOI: https://doi.org/10.1023/A:1005425613593