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Climatic change over the Lowveld of South Africa

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Abstract

There has been a 38% decrease in expected annual rainfall totals over the Lowveld, in the eastern part of South Africa, during the last two decades. The downward trend in mean annual rainfall is not replicated in the rest of the summer rainfall region above the escarpment. Rainfall variability over the Lowveld has been increasing since about the 1950s, although the increase in variability appears to have been slowing down in more recent years. Changes in the frequency and intensity of El Niño/Southern Oscillation extreme events are only partly responsible for the observed desiccation and increase in rainfall variability. The CSIRO 9-level general circulation model simulates, for 2 × CO2 conditions, an insignificant decrease of 10% in the annual mean and a slight increase in the inter-annual variability of rainfall over the Lowveld. Other general circulation models likewise simulate only small changes in annual mean rainfall over the region. However, the simulated increase in rainfall variability by the CSIRO 9-level model is likely to be conservative since the model, being linked to a slab ocean, is unable to represent important features of ocean-atmosphere coupling in the region. Significant changes in the frequencies of extreme drought events and of heavy rains in the Lowveld are likely to occur even with only small changes in the rainfall climatology of the region.

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References

  • Allan, R. J. and Haylock, M. R.: 1993, ‘Circulation Features Associated with the Winter Rainfall Decrease in Southwestern Australia’, J. Clim. 6, 1356–1367.

    Google Scholar 

  • Brown, B. G. and Katz, R. W.: 1991, ‘Use of Statistical Methods in the Search for Teleconnections: Past, Present, and Future’, in Glantz, M. H., Katz, R. W., and Nicholls, N. (eds.), Teleconnections Linking Worldwide Climate Anomalies: Scientific Basis and Societal Impact, Cambridge University Press, Cambridge, pp. 371–400.

    Google Scholar 

  • Bruce, J. P.: 1994, ‘Natural Disaster Reduction and Global Change’, Bull. Amer. Meteorol. Soc. 75, 1831–1835.

    Google Scholar 

  • Cao, H. X., Mitchell, J. F. B., and Lavery, J. R.: 1992, ‘Simulated Diurnal Range and Variability of Surface Temperature in a Global Climate Model for Present and Doubled CO2 Climates’, J. Clim. 6, 920–943.

    Google Scholar 

  • Diggle, P. J.: 1991, Time Series: A Biostatistical Introduction, Oxford Science Publications, Oxford, 257 pp.

    Google Scholar 

  • Dyer, T. G. J. and Tyson, P. D.: 1977, ‘Estimating Above and Below Normal Rainfall Periods over South Africa’, J. Appl. Met. 16, 145–147.

    Google Scholar 

  • Elliott, W. P. and Angell, J. K.: 1988, ‘Evidence for Changes in Southern Oscillation Relationships During the Last 100 Years’, J. Clim. 1, 729–737.

    Google Scholar 

  • Folland, C. K. and Kates, F.: 1984, ‘Changes in Decadally Averaged Sea Surface Temperature over the World, 1861–1980’, in Berger, A., Imbrie, J., Hays, J., Kukla, G., and Saltzman, B. (eds.), Understanding the Response to Astronomical Forcing, NATO Advanced Studies Institute Series, Vol. 126, D. Reidel, Dordrecht, pp. 721–727.

    Google Scholar 

  • Glantz, M. H., Katz, R. W., and Nicholls, N. (eds.): 1989, Teleconnections Linking Worldwide Climate Anomalies: Scientific Basis and Societal Impact, Cambridge University Press, Cambridge, 535 pp.

    Google Scholar 

  • Gordon, H. B., Whetton, P. H., Pittock, A. B., Fowler, A. M., and Haylock, M. R.: 1992, ‘Simulated Changes in Daily Rainfall Intensity Due to the Enhanced Greenhouse Effect: Implications for Extreme Rainfall Events’, Clim. Dynam. 8, 83–102.

    Google Scholar 

  • Hartmann, D. L. and Michelsen, M. L.: 1993, ‘Large-Scale Effects on the Regulation of Tropical Sea Surface Temperatures’, J. Clim. 6, 2049–2062.

    Google Scholar 

  • Hulme, M.: 1992, ‘Rainfall Changes in Africa: 1931–1960 to 1961–1990’, Int. J. Climatol. 12, 685–699.

    Google Scholar 

  • Intergovernmental Panel on Climate Change (IPCC): 1990, Climate Change, The IPCC Scientific Assessment, Houghton, J. T., Jenkins, G. J., and Ephraums, J. J. (eds.), Cambridge University Press, 366 pp.

  • Intergovernmental Panel on Climate Change (IPCC): 1992, Climate Change 1992, The Supplementary Report to the IPCC Scientific Assessment, Houghton, J. T., Callander, B. A., and Varney, S. K. (eds.), Cambridge University Press, 200 pp.

  • Jenkinson, A. F.: 1977, ‘A Powerful Elementary Method of Spectral Analysis for Use with Monthly, Seasonal or Annual Meteorological Time Series’, Met. Office 13 Branch Memo No. 57, Bracknell.

  • Joubert, A. M.: 1995, ‘Simulations of Southern African Climate by Early-Generation General Circulation Models’, S. Afr. J. Sc. 91, 85–91.

    Google Scholar 

  • Jury, M. R. and Pathack, B.: 1991, ‘A Study of Climate and Weather Variability over the Tropical Southwest Indian Ocean’, Met. Atmos. Phys. 47, 37–48.

    Google Scholar 

  • Katz, R. W.: 1988, ‘Use of Cross Correlations in the Search for Teleconnections’, J. Climatol. 8, 241–253.

    Google Scholar 

  • Katz, R. W. and Acero, J. G.: 1994, ‘Sensitivity Analysis of Extreme Precipitation Events’, Int. J. Climatol. 14, 985–999.

    Google Scholar 

  • Katz, R. W. and Brown, B. G.: 1991, ‘The Problem of Multiplicity in Research on Teleconnections’, Int. J. Climatol. 11, 505–513.

    Google Scholar 

  • Katz, R. W. and Brown, B. G.: 1992, ‘Extreme Events in a Changing Climate: Variability is More Important than Averages’, Clim. Change 21, 289–302.

    Google Scholar 

  • Katz, R. W. and Glantz, M. H.: 1986, ‘Anatomy of a Rainfall Index’, Mon. Wea. Rev. 114, 764–771.

    Google Scholar 

  • Landman, W. A.: 1994, ‘A Study of the Rainfall Variability of the Summer Rainfall Regions of South Africa, as Revealed by Principal Component Analysis’, IRICP Pilot Project Report.

  • Lindesay, J. A.: 1988, ‘South African Rainfall, the Southern Oscillation and a Southern Hemisphere Semi-Annual Cycle’, J. Climatol. 8, 17–30.

    Google Scholar 

  • Lindesay, J. A., Harrison, M. S. J., and Haffner, M. P.: 1986, ‘The Southern Oscillation and South African Rainfall’, S. Afr. J. Sc. 82, 196–198.

    Google Scholar 

  • Livingstone, D.: 1857, Missionary Travels and Research in Southern Africa, London, 687 pp.

  • Mason, S. J.: 1995, ‘Sea-Surface Temperature - South African Rainfall Associations, 1910–1989’, Int. J. Climatol. 15, 119–135.

    Google Scholar 

  • Mason, S. J. and Joubert, A. M.: 1995, ‘Simulated Changes in Extreme Rainfall over Southern Africa’, submitted to Int. J. Climatol.

  • Mason, S. J. and Lindesay, J. A.: 1993, ‘A Note on the Modulation of Southern Oscillation - South African Rainfall Associations with the Quasi-Biennial Oscillation’, J. Geophys. Res. 98 (D5), 8847–8850.

    Google Scholar 

  • McGregor, J. L., Gordon, H. B., Watterson, I. G., and Dix, M. R.: 1993, ‘The CSIRO 9-Level Atmospheric General Circulation Model’, CSIRO Div. Atmos. Res. Tech. Pap. No. 26, CSIRO, Australia, 89 pp.

    Google Scholar 

  • McLelland, L. M.: 1994, ‘A Preliminary Note on Changes in Rainfall Variability in South Africa’, submitted to S. Afr. J. Sc.

  • Mearns, L. O., Katz, R. W., and Schneider, S. H.: 1984, ‘Extreme High-Temperature Events: Changes in Their Probabilities with Changes in Mean Temperature’, J. Clim. Appl. Meteorol. 23, 1601–1613.

    Google Scholar 

  • Meehl, G. A.: 1991, ‘The Southern Oscillation in a Coupled GCM: Implications for Climate Sensitivity and Climate Change’, in Schlesinger, M. E. (ed.), Greenhouse-Gas-Induced Climatic Change: A Critical Appraisal of Simulations and Observations, Elsevier, Amsterdam, pp. 111–128.

    Google Scholar 

  • Meehl, G. A., Branstator, G. W., and Washington, W. M.: 1993, ‘Tropical Pacific Interannual Variability and CO2 Climate Change’, J. Clim. 6, 42–63.

    Google Scholar 

  • Moffat, R.: 1842, Missionary Labours and Scenes in South Africa, London, 624 pp.

  • Montgomery, D. C. and Peck, E. A.: 1992, Introduction to Linear Regression Analysis, Wiley, Chichester, 527 pp.

    Google Scholar 

  • Nicholls, N. and Lavery, B.: 1992, ‘Australian Rainfall Trends During the Twentieth Century’, Int. J. Climatol. 12, 153–163.

    Google Scholar 

  • Nicholson, S. E.: 1989, ‘Long-Term Changes in African Rainfall’, Weather 44, 46–56.

    Google Scholar 

  • Nicholson, S. E.: 1993, ‘An Overview of African Rainfall Fluctuations of the Last Decade’, J. Clim. 6, 1463–1466.

    Google Scholar 

  • Preston-Whyte, R. A. and Tyson, P. D.: 1988, The Atmosphere and Weather of Southern Africa, Oxford University Press, Cape Town, 374 pp.

    Google Scholar 

  • Rind, D.: 1991, ‘Climate Variability and Climate Change’, in Schlesinger, M. E. (ed.), Greenhouse-Gas-Induced Climatic Change: A Critical Appraisal of Simulations and Observations, Elsevier, Amsterdam, pp. 69–78.

    Google Scholar 

  • Rind, D., Goldberg, R., and Ruedy, R.: 1989, ‘Change in Climate Variability in the 21st Century’, Clim. Change 14, 5–37.

    Google Scholar 

  • Rohatgi, V. K.: 1976, An Introduction to Probability Theory and Mathematical Statistics, John Wiley & Sons, New York, 684 pp.

    Google Scholar 

  • Solow, A. R.: 1987, ‘Testing for Climatic Change: An Application of the Two-Phase Regression Model’, J. Clim. Appl. Meteorol. 26, 1401–1405.

    Google Scholar 

  • Solow, A. R.: 1988, ‘A Bayesian Approach to Statistical Inference about Climate Change’, J. Clim. 1, 512–521.

    Google Scholar 

  • South African Weather Bureau: 1993, ‘Staat van Die Damme’, S. Afr. Weath. Bur. Newsl. No. 534.

  • Trenberth, K. E.: 1991, ‘General Characteristics of El Niño-Southern Oscillation’, in Glantz, M. H., Katz, R. W., and Nicholls, N. (eds.), Teleconnections Linking Worldwide Climate Anomalies: Scientific Basis and Societal Impact, Cambridge University Press, Cambridge, pp. 13–42.

    Google Scholar 

  • Tyson, P. D.: 1980, ‘Temporal and Spatial Variation of Rainfall Anomalies in Africa South of Latitude 22 During the Period of Instrumental Records’, Clim. Change 2, 363–371.

    Google Scholar 

  • Tyson, P. D.: 1986, Climatic Change and Variability in Southern Africa, Oxford University Press, Cape Town, 220 pp.

    Google Scholar 

  • Tyson, P. D.: 1993, ‘Recent Developments in the Modeling of the Future Climate of Southern Africa’, S. Afr. J. Sc. 89, 494–505.

    Google Scholar 

  • Tyson, P. D. and Dyer, T. G. J.: 1978, ‘The Predicted Above-Normal Rainfall of the Seventies and the Likelihood of Droughts in the Eighties in South Africa’, S. Afr. J. Sc. 74, 372–377.

    Google Scholar 

  • Tyson, P. D. and Dyer, T. G. J.: 1980, ‘The Likelihood of Droughts in the Eighties in South Africa’, S. Afr. J. Sc. 76, 340.

    Google Scholar 

  • van Heerden, J., Terblanche, D. E., and Schulze, G. C.: 1988, ‘The Southern Oscillation and South African Summer Rainfall’, J. Climatol. 8, 577–597.

    Google Scholar 

  • Vogel, C. H.: 1989, ‘A Documentary-Derived Climatic Chronology for South Africa’, Clim. Change 14, 291–310.

    Google Scholar 

  • Walker, N. D.: 1990, ‘Links between South African Summer Rainfall and Temperature Variability of the Agulhas and Benguela Current Systems’, J. Geophys. Res. 95 (C3), 3297–3319.

    Google Scholar 

  • Walker, N. D. and Lindesay, J. A.: 1989, ‘Preliminary Observations of Oceanic Influences on the February–March 1988 Floods in Central South Africa’, S. Afr. J. Sci. 85, 164–169.

    Google Scholar 

  • Washington, W. M. and Meehl, G. A.: 1991, ‘Characteristics of Coupled Atmosphere-Ocean CO2 Sensitivity Experiments with Different Ocean Formulations’, in Schlesinger, M. E. (ed.), Greenhouse-Gas-Induced Climatic Change: A Critical Appraisal of Simulations and Observations, Elsevier, Amsterdam, pp. 79–110.

    Google Scholar 

  • Whetton, P. H., Fowler, A. M., Haylock, M. R., and Pittock, A. B.: 1993, ‘Implications of Climate Change due to the Enhanced Greenhouse Effect on Floods and Droughts in Australia’, Clim. Change 25, 289–318.

    Google Scholar 

  • Wigley, T. M. L.: 1987, ‘Impact of Extreme Events’, Nature 316, 106–107.

    Google Scholar 

  • Wigley, T. M. L. and Jones, P. D.: 1987, ‘England and Wales Precipitation: A Discussion of Recent Changes in Variability and an Update to 1985’, J. Climatol. 7, 231–246.

    Google Scholar 

  • Wilson, J. F.: 1865, ‘Water Supply in the Basin of the Orange River of “Gariep South Africa”’, J. R. Geog. Soc. 35, 106–129.

    Google Scholar 

  • Yu, B. and Neil, D. T.: 1993, ‘Long-Term Variations in Regional Rainfall in the South-West of Western Australia and the Difference between Average and High Intensity Rainfalls’, Int. J. Climatol. 13, 77–88.

    Google Scholar 

  • Zhang, C.: 1993, ‘Large-Scale Variability of Atmospheric Deep Convection in Relation to Sea Surface Temperature in the Tropics’, J. Clim. 10, 1898–1913.

    Google Scholar 

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  1. Climatology Research Group, University of the Witwatersrand, Private Bag 3, 2050, Johannesburg, South Africa

    S. J. Mason

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Mason, S.J. Climatic change over the Lowveld of South Africa. Climatic Change 32, 35–54 (1996). https://doi.org/10.1007/BF00141277

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