Abstract
The NASA/Goddard Institute for Space Studies (GISS) climatemodel is forced with globally observed sea-surfacetemperatures (SST) in five simulations, 1969–1991,with individual runs beginning from altered initialatmospheric conditions. The interannual variability ofmodeled anomalies of the Southern Oscillation Index,mid-tropospheric temperatures, 850 mb zonal winds andOutgoing Longwave Radiation over the tropical PacificOcean, which has the largest SST anomaly forcing, arestrongly correlated with observed trends which reflectENSO cycles. The model's rainfall variability overthree agriculturally intensive regions, two tropicaland one mid-latitude, is investigated in order toevaluate the potential usefulness of GCM predictionsfor agricultural planning. The correct sign ofZimbabwe seasonal precipitation anomalies was hindcastwithin a useful range of consensus only for selectseasons corresponding to extreme ENSO events for whichanomalous circulation patterns were ratherrealistically simulated. The correlation betweenhindcasts of Nordeste monthly precipitation andobservations increases with time smoothing, reaching0.64 for 5-month running means. Consensus betweenindividual runs is directly proportional to theabsolute value of Niño3 SST so that during ElNiño and La Niña years most simulations agreeon the sign of predicted Nordeste rainfall anomalies.We show that during selected seasons the uppertropospheric divergent circulation and near surfacemeridional displacements of the ITCZ are realisticallyrepresented by the ensemble mean of the simulations.This realistic simulation of both the synopticmechanisms and the resulting precipitation changesincreases confidence in the GCM's potential forseasonal climate prediction.
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Boer, G., Arpe, K., Blackburn, M., Déqué, M., Gates, W., Hart, T., Le Treut, H., Roeckner, E., Sheinin, D., Simmonds, I., Smith, R., Tokioka, T., Wetherald, R., and Williamson, D.: 1992, ‘Some Results from an Intercomparison of the Climates Simulated by 14 General Circulation Models’, JGR 97, 12771-12786.
Boyle, J. S.: 1998, ‘Evaluation of the Annual Cycle of Precipitation over the United States in GCMs: AMIP Simulations’, J. Climate 11, 1041-1055.
Chelliah, M., Ropelewski, C., and Rasmusson, E.: 1998, ‘Low Frequency Variability and Composite Atmospheric Circulation over the Globe Associated with ‘ENSO’ Based on 40 Years of NCEP/NCAR Reanalysis Data’, in Prepint Volume, Ninth Conference on Global Change Studies, AMS, Phoenix, AZ, pp. 192-195.
Chu, P-S.: 1991, ‘Brazil's Climate Anomalies and ENSO’, Chapter 3 in Glantz, M., Katz, R., and Nicholls, N. (eds.), Teleconnections Linking Worldwide Climate Anomalies, Cambridge University Press, New York, p. 43.
Del Genio, A. and Yao, M.-S.: 1993, ‘Efficient Cumulus Parameterization for Long-Term Climate Studies. The GISS Scheme’, in Emanuel, K. and Raymond, D. (eds.), Cumulus Parameterization, Amer. Meteorol. Soc. Monograph Series, Vol. 24, Boston, MA, pp. 181-184.
Del Genio, A., Yao, M.-S., Kovari, W., and Lo, K.-W.: 1996, ‘A Prognostic Cloud Water Parameterization for Global Climate Models’, J. Climate 9, 270-304.
Druyan, L., Shah, K., Lo, K.-W., Marengo, J., and Russell, G.: 1995, ‘Impacts of Model Improvements on GCM Sensitivity to SST Forcing’, Int. J. Clim. 15, 1061-1086.
Gates, L.: 1992, ‘AMIP: The Atmospheric Model Intercomparison Project’, Bull. Amer. Meteor. Soc. 73, 1962-1970.
Handler, P.: 1984, ‘Corn Yields in the United States and Sea-Surface Temperature Anomalies in the Equatorial Pacific Ocean during the Period 1868-1982’, Agric. For. Meteorol. 31, 25-32.
Hansen, J., Russell, G., Rind, D., Stone, P., Lacis, A., Lebedeff, S., Ruedy, R., and Travis, L.: 1983, ‘Efficient Three-Dimensional Global Models for Climate Studies: Models I and II’, Mon. Wea. Rev. 111, 609-662.
Hansen, Sato, Ruedy, Lacis, Asamoah, Beckford, Borenstein, Brown, Cairns, Carlson, Curran, de Castro, Druyan, Etwarrow, Ferede, Fox, Gaffen, Glascoe, Gordon, Hollandsworth, Jiang, Johnson, Lawrence, Lean, Lerner, Lo, Logan, Luckett, McCormick, McPeters, Miller, Minnis, Ramberran, Russell, G., Russell, P., Stone, Tegen, Thomas, Thomason, Thompson, Wilder, Willson, and Zawodny: 1997, ‘Forcings and Chaos in Interannual to Decadal Climate Change’, JGR 102, 25679-25720.
Hartke, G. and Rind, D.: 1997, ‘Improved Surface and Boundary Layer Models for the GISS GCM’, JGR 102, 16407-16422.
Hastenrath. S. and Heller, L.: 1977, ‘Dynamics of Climate Hazards in Northeast Brazil’, Quart. J. Roy. Meteorol. Soc. 103, 77-92.
Hastenrath, S. and Druyan, L.: 1993, ‘Circulation Anomaly Mechanisms in the Tropical Atlantic Sector During the Northeast Brazil Rainy Season: Results from the GISS GCM’, J. Geophys. Res. 98 (D8), 14917-14923.
Hastenrath, S. and Greischar, L.: 1993a, ‘Circulation Mechanisms Related to Northeast Brazil Rainfall Anomalies’, J. Geophys. Res. 98 (D8), 5093-5102.
Hastenrath, S. and Greischar, L.: 1993b, ‘FurtherWork on the Prediction of Northeast Brazil Rainfall Anomalies’, J. Climate 6, 743-758.
Hoerling, M. and Kumar, A.: 1997, ‘Origins of Extreme Climate States during the 1982-1983 ENSO Winter’, J. Climate 10, 2859-2870.
Houghton, J., Meira Filho, L., Callender, B., Harris, N., Kattenberg, A., and Maskell, K. (eds.): 1996, Climate Change 1995: The Science of Climate Change, Cambridge University Press, Cambridge, p. 250.
Kousky, V. and Chu, P-S.: 1978, ‘Fluctuations in Annual Rainfall for Northeast Brazil’, J. Meteorol. Soc. Japan 57, 457-465.
Kousky, V. and Leetmaa, A.: 1989, ‘The 1986-1987 Pacific Warm Episode: Evolution of Oceanic and Atmospheric Fields’, J. Climate 2, 254-267.
Lau, K.-M., Kin, J. H., and Sud, Y.: 1996, ‘Intercomparison of Hydrologic Process in AMIP GCMs’, Bull. Amer. Meteorol. Soc. 77, 2209-2227.
Legates, D. and Willmott, C.: 1990, ‘Mean Seasonal and Spatial Variability in Gauge-Corrected, Global Precipitation’, Int. J. Clim. 10, 111-127.
Lindesay, J.: 1988, ‘South African Rainfall, the Southern Oscillation and a Southern Hemisphere Semi-Annual Cycle’, J. Climatol. 8, 17-30.
Makarau, A. and Jury, M.: 1997, ‘Seasonal Cycle of Convective Spells over Southern Africa during Austral Summer’, Int. J. Clim. 17, 1317-1332.
Marengo, J. and Hastenrath, S.: 1993, ‘Case Studies of Extreme Climatic Events in the Amazon Basin’, J. Climate 6, 617-627.
Matarira, C.: 1990, ‘Drought over Zimbabwe in a Regional and Global Context’, Int. J. Clim. 10, 609-625.
Mechoso, C. and Lyons, S.: 1988, ‘On the Atmospheric Response to SST Anomalies Associated with the Atlantic Warm Event during 1984’, J. Climate 1, 422-428.
Mechoso, C., Lyons, S., and Spahr, J.: 1990, ‘The Impact of Sea-Surface Temperature Anomalies on the Rainfall over Northeast Brazil’, J. Climate 3, 812-826.
Moura, A. and Shukla, J.: 1981, ‘On the Dynamics of Droughts in Northeast Brazil: Observations, Theory and Numerical Experiments with a General Circulation Model’, J. Atmos. Sci. 38, 2653-2675.
Reynolds, R. and Smith, T.: 1994, ‘Improved Global Sea-Surface Temperature Analyses’, J. Climate 7, 929-948.
Rind, D. and Lerner, J.: 1996, ‘Use of On-Line Tracers as a Diagnostic Tool in General Circulation Model Development. 1. Horizontal and Vertical Transport in the Troposphere’, JGR 101, 12667-12683.
Rind, D., Lerner, J., Shah, K., and Suozzo, R.: 1999, ‘Use of On-Line Tracers as a Diagnostic Tool in General Circulation Model Development. 2. Transport between the Troposphere and Stratosphere’, JGR 104, 9151-9168.
Ropelewski, C. and Halpert, M.: 1987, ‘Global and Regional Scale Precipitation Patterns Associated with El Niño/Southern Oscillation’, Mon. Wea. Rev. 115, 1606-1626.
Rosenzweig, C. and Abramopolous, F.: 1997, ‘Land-Surface Model Development for the GISS GCM’, J. Climate 10, 2040-2054.
Rossow, W. and Schiffer, R.: 1991, ‘ISCCP Cloud Data Products’, Bull. Amer. Meteorol. Soc. 72, 2-20.
Shah, K. and Rind, D.: 1995, ‘Use of Microwave Brightness Temperatures with a General Circulation Model’, JGR 100, 13841-13874.
Shah, K. and Rind, D.: 1998, ‘Comparison of Upper Tropospheric and Lower Stratospheric Temperatures: MSU, Radiosonde, CIRA and NCEP/NCAR Reanalysis Climatologies’, JGR 103, 31569-31591.
Shah, K., Rind, D., and Lonergan, P.: 1996, ‘Could High-Speed Civil Transport Aircraft Impact Stratospheric and Tropospheric Temperatures Measured by Microwave Sounding Unit?’, JGR 101, 28711-28721.
Spencer, R. and Christy, J.: 1992, ‘Precision and Radiosonde Validation of Satellite Gridpoint Temperature Anomalies’, J. Climate 5, 847-857.
Uvo, C., Repelli, C., Zebiak, S., and Kushnir, Y.: 1998, ‘The Relationships between Tropical Pacific and Atlantic SST and Northeast Brazil Monthly Precipitation’, J. Climate 11, 551-562.
Ward, M. and Folland, C.: 1991, ‘Prediction of Seasonal Rainfall in the North Nordeste of Brazil Using Eigenvectors of SST’, Int. J. Clim. 11, 771-743.
Yulaeva, A. and Wallace, J.: 1994, ‘The Signature of ENSO in Global Temperature and Precipitation Fields Derived from the Microwave Sounding Unit’, J. Climate 7, 1719-1736.
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Druyan, L.M., Shah, K.P., Chandler, M.A. et al. GCM Hindcasts of SST Forced Climate Variability over Agriculturally Intensive Regions. Climatic Change 45, 279–322 (2000). https://doi.org/10.1023/A:1005571213805
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DOI: https://doi.org/10.1023/A:1005571213805