Natural Hazards

, Volume 29, Issue 2, pp 229–254 | Cite as

Changes in Global Monsoon Circulations Since 1950

  • T. N. Chase
  • J. A. Knaff
  • R. A. PielkeSr.
  • E. Kalnay
Article

Abstract

We examined changes in several independent intensity indices of four majortropical monsoonal circulations for the period 1950–1998. Theseintensity indices included observed land surface precipitation andobserved ocean surface pressure in the monsoon regions aswell as upper-level divergence calculated at severalstandard levels from the NCAR/NCEP reanalysis. These values wereaveraged seasonally over appropriate regions of southeastern Asian, western Africa, eastern Africa and the Australia/Maritime continent and adjacent ocean areas. Asa consistency check we also examined two secondary indices: mean sea level pressure trends and low level convergence both from theNCEP reanalysis.

We find that in each of the four regions examined, a consistentpicture emerges indicating significantly diminished monsoonalcirculations over the period of record, evidence of diminished spatialmaxima in the global hydrological cycle since 1950. Trends since 1979,the period of strongest reported surface warming, do not indicate any change inmonsoon circulations. When strong ENSO years are removed from each of the time series the trends still show a general, significant reduction of monsoon intensity indicating that ENSO variability is not the direct cause for the observed weakening.

Most previously reported model simulations of theeffects of rising CO2 show an increase in monsoonal activity withrising global surface temperature. We find no support in these datafor an increasing hydrological cycle or increasing extremes as hypothesized bygreenhouse warming scenarios.

Monsoon Asia Africa Australia 

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References

  1. Annamalai, H., Slingo, J. M., Sperber, K. R., and Hodges, K.: 1999, The mean evolution and variability of the Asian summer monsoon: Comparison of ECMWF and NCEP-NCAR reanalyses, Mon. Wea. Rev. 127, 1157–1186.Google Scholar
  2. Bamzai, A. S. and Shukla, J.: 1999, Relation between Eurasian snow cover, snow depth, and the Indian summer monsoon, J. Clim. 12, 3117–3132Google Scholar
  3. Bhatt, U. S.: 1989, Circulation regimes of rainfall anomalies in the African-South Asian monsoon belt, J. Clim. 2, 1133–1144.Google Scholar
  4. Blanford, H. F.: 1884, On the connection of the Himalaya snowfall with dry winds and seasons of drought in India. Proc. Roy. Soc. London 37, 3–22.Google Scholar
  5. Boucher, O., Pham, M., and Sadourny, R.: 1998, General circulation model experiments of the Indian summer monsoon with increasing levels of sulphate aerosols, Ann. Geophys. 16, 346–352.Google Scholar
  6. Camberlin, P.: 1995, June–September rainfall in northeastern Africa and atmospheric signals in the tropics: A zonal perspective, Int. J. Clim. 15, 773–783.Google Scholar
  7. Camberlin, P.: 1997, Rainfall anomalies in the source region of the Nile and their connection with the Indian summer monsoon, J. Clim. 10, 1380–1392.Google Scholar
  8. Chase, T. N., Pielke, R. A., Kittel, T. G. F., Nemani, R., and Running, S.W.: 1996, The sensitivity of a general circulation model to large-scale vegetation changes, J. Geophys. Res. 101, 7393–7408.Google Scholar
  9. Chase, T. N., Pielke, R. A. Sr., Knaff, J. A., Kittel, T. G. F., and Eastman, J. L.: 2000, A Comparison of Regional trends in 1979–1997 depth averaged tropospheric temperatures, Int. J. Clim. 20, 503–518.Google Scholar
  10. Chakraborty, B. and Lal, M.: 1994, Monsoon climate and its change in a doubled CO2 atmosphere simulated by CSIRO9 model, TAO 5, 515–536.Google Scholar
  11. Conference Summary: 1998, Appendix B of the Proceedings of the First WCRP International Conference on Reanalyses, Silver Spring, Maryland, USA, 27–31 October 1997. WCRP Geneva, February 1998 (ICSU/IOC/WMO),(WCRP-104), pp 1–4.Google Scholar
  12. Dai, A., Fung, I. Y., and Del Genio, A. D.: 1997, Surface observed global land precipitation during 1900–1988, J. Clim. 10, 2943–2962.Google Scholar
  13. de Noblet, N., Braconnot, P., Joussaume, S., and Masson, V.: 1996, Sensitivity of simulated Asian and African summer monsoons to orbitally induced variations in insolation 126, 115 and 6 kBP, Clim. Dyn. 12, 589–603.Google Scholar
  14. de Ridder, K.: 1998, The impact of vegetation cover on Sahelian drought persistence, Boundary-Layer Meteorol. 88, 307–321.Google Scholar
  15. Eltahir, E.: 1996, Role of vegetation in sustaining large-scale atmospheric circulations in the tropics, J. Geophys. Res. 101, 4255–4268.Google Scholar
  16. Evans, J. L. and Allan, R. J.: 1992, El Niño/Southern Oscillation modification to the structure of the monsoon and tropical cyclone activity in the australasian region, Int. J. Clim. 12, 611–623.Google Scholar
  17. Folland, C. K., Palmer, T. N., and Parker, D. E.: 1986, Sahel rainfall and worldwide sea surface temperatures, 1901–1985, Nature 320, 602–607.Google Scholar
  18. Fontaine, B. and Bigot, S.: 1993, West African rainfall deficits and sea surface temperatures. Int. J. Clim. 13, 271–285.Google Scholar
  19. Fu, C. and Wen, G.: 1999, Variation of ecosystems over east Asia in association with seasonal, interannual and decadal monsoon climate variability, Clim. Change 43, 477–494.Google Scholar
  20. Fu, C., Diaz, H. F., Dong, D., and Fletcher, J. O.: 1999, Changes in atmospheric circulation over northern hemisphere oceans associated with rapid warming of the 1920s, Int. J. Clim. 19, 581–606.Google Scholar
  21. Gadgil, S., Yadumani and Joshi, N. V.: 1993, Coherent rainfall zones of the Indian region, Int. Jour. Clim. 13, 547–566.Google Scholar
  22. Goswami, B.N., Krishnamurthy, V., and Annamalai, H.: 1999, A broad-scale circulation index for the interannual variability of the Indian summer monsoon, Quart. J. Roy. Meteor. Soc. 125, 611–633.Google Scholar
  23. Hansen, J., Ruedy, R., Glascoe, J., and Sato, M.: 1999, GISS analysis of surface temperature change, J. Geophys. Res. 104, 30997–31022.Google Scholar
  24. Hastenrath, S.: 1985, Climate and Circulation in the Tropics, D. Reidel Publishing. Dortrecht, Boston, Lancaster, Tokyo.Google Scholar
  25. Hennessy, K. J., Suppiah, R., and Page, C. M.: 1999, Australian rainfall changes 1910–1995. Aust. Met. Mag. 48, 1–13.Google Scholar
  26. Hirakuchi, H. and Giorgi, F.: 1995, Multiyear present-day and 2xCO2 simulations of monsoon climate over eastern Asia and Japan with a regional climate model nested in a general circulation model, J. Geophys. Res. 100, 21105–21125.Google Scholar
  27. Hulme, M.: 1992a, Rainfall changes in Africa: 1931–1960 to 1961–1990, Int. J. Clim. 12, 685–699.Google Scholar
  28. Hulme, M.: 1992b, A 1951-80 Global land precipitation climatology for the evaluation of general circulation models, Clim. Dyn. 7, 57–72.Google Scholar
  29. Hulme, M., Osborn, T. J., and Johns, T. C.: 1998, Precipitation sensitvity to global warming: Comparison of observations with HADCM2 simulations, Geophys. Res. Lett. 25, 3379–3382.Google Scholar
  30. Indeje, M., Semazzi, F. H. M., and Ogallo, L. J.: 2000, ENSO signals in East African rainfall seasons, Int. J. Clim. 20, 19–46.Google Scholar
  31. IPCC (Intergovernmental Panel on Climate Change): 1996, In: J. T. Houghton et al. (eds), Climate Change 1995, Cambridge University Press, Cambridge.Google Scholar
  32. Janowiak, J. E.: 1988, An investigation of interannual rainfall variability in Africa, J. Clim. 1, 240–255.Google Scholar
  33. Ji, L., Sun, S., Arpe, K., and Bengtsson, L.: 1996, Model study on the interannual variability of Asian winter monsoon and its influence, Adv. Atmos. Sci. 14, 1–22.Google Scholar
  34. Kothyari, U. C., Singh, V. P., and Aravamuthan, V.: 1997, An investigation of changes in rainfall and temperature regimes of the Ganga Basin in India, Water Res. Man. 11, 17–34.Google Scholar
  35. Kalnay, E., Kanamitsu, M., Kistler, R., Collins, W., Deaven, D., Gandin, L., Iredell, M., Saha, S., White, G., Woollen, J., Zhu, Y., Chelliah, M., Ebisuzaki, W., Higgins, W., Janowiak, J., Mo, K. C., Ropelewski, C., Wang, J., Leetmaa, A., Reynolds, R., Jenne, R., and Joseph, D.: 1996, The NCEP/NCAR 40-year reanalysis project, Bull. Amer. Meteor. Soc. 77, 437–471.Google Scholar
  36. Khandekar, M. L.: 2000, Uncertainties in greenhouse gas induced climate change, Report prepared for Science and Technology Branch, Alberta Environment, ISBN 0-7785-1051-4, Edmonton, Alberta.Google Scholar
  37. Kumar, K. K., Rajagopalan, B., and Cane, M. A.: 1999, On the weakening relationship between the Indian monsoon and ENSO, Science 284, 2156–2159.Google Scholar
  38. Kutzbach, J. E. and Gallimore, R. G.: 1988, Sensitivity of a coupled atmosphere/mixed layer ocean model to changes in orbital forcing at 9000 years B.P., J. Geophys. Res. 93, 803–821.Google Scholar
  39. Kutzbach, J., Bonan, G., Foley, J., and Harrison, S. P.: 1996, Vegetation and soil feedbacks on the response of the African monsoon to orbital forcing in the early to middle Holocene, Nature 384, 623–626.Google Scholar
  40. Krishnamurti, T. N. and Surgi, N.: 1987, Observational aspects of summer monsoon, In: C.-P. Chang and T. N. Krishnamurti (eds), Monsoon Meteorology, Oxford University Press, New York.Google Scholar
  41. Lal, M., Cubasch, U., Voss, R., and Waszkewitz, J.: 1996, Effect of transient increase in greenhouse gases and sulphate aerosols on monsoon climate, Current Sci. 69, 752–763.Google Scholar
  42. Lal, M., Cubasch, U., and Santer, B. D.: 1994, Effect of global warming on Indian Monsoon simulated with a coupled ocean-atmosphere general circulation model, Current Science 66, 430–438.Google Scholar
  43. Levitus, S., Antonov, J. I., Wang, J., Delworth, T. L., Dixon, K. W., and Broccoli, A. J.: 2001, Anthropogenic warming of the Earth's climate system, Science 292, 267–270.Google Scholar
  44. Li, X., Yang, S., Zhao, Z., and Ding, Y.: 1995, The future climate change simulation in east Asia from CGCM experiments, Quart. J. App. Met. 6, 1–8.Google Scholar
  45. Longxun, C., Yongning, S., and Zenhai, R.: 1994, Climate change in China during the past 70 years and its relationship to monsoon variations, In: Richard G. Zepp (ed.), Climate-Biosphere Interactions: Biogenic Emissions and Environmental Effects of Climate Change, John Wiley and Sons, Inc. New York.Google Scholar
  46. Lough, J. M.: 1997, Regional indices of climate variation: Temperature and rainfall in Queensland, Australia, Int. J. Clim. 17, 55–66.Google Scholar
  47. Mcbride, J. L. and Nicholls, N.: 1983, Seasonal relationships between Australian rainfall and the Southern Oscillation, Mon. Wea. Rev. 111, 1998–2004.Google Scholar
  48. Meehl, G. A., Washington, W. M., Ericson, D. J. III., Briegleb, B. P., and Jaumann P. J.: 1996, Climate change from increased and direct and indirect effects of sulfate aerosols, Geophys. Res. Lett. 23, 3755–3758.Google Scholar
  49. Meehl, G. A. and Washington, W. M.: 1993, South Asian summer monsoon variability in a model with doubled atmospheric carbon dioxide concentration, Science 260, 1101–1104.Google Scholar
  50. Meehl, G. A.: 1994, Influence of the land surface in the Asian summer monsoon: External conditions versus internal feedbacks, J. Clim. 7 1033–1049.Google Scholar
  51. Mitchell, J. F. B. and Johns, T. C.: 1997, On modification of global warming by sulfate aerosols. J. Clim. 10, 245–267.Google Scholar
  52. Nicholls, N.: 1997, Australian rainfall variability and change, Weather 52, 66–71.Google Scholar
  53. Nicholls, N., Lavery, B., Frederiksen, C., Drosdowsky, W., and Torok, S.: 1996, Recent apparent changes in relationships between the El Niño/Southern Oscillation and Australian rainfall and temperature, Geophys. Res. Lett. 23, 3357–3360.Google Scholar
  54. Nicholson, S. E.: 1980, The nature of rainfall fluctuations in subtropical West Africa, Mon. Wea. Rev. 108, 473–487.Google Scholar
  55. Nicholson, S. E. and Kim, J.: 1997, The relationship between the El Niño-Southern Oscillation and African rainfall, Int. J. Clim. 17, 117–135.Google Scholar
  56. Parthasarathy, B., Munot, A. A., and Kothawale, D. R.: 1994, All-India monthly and seasonal rainfall series: 1871–1993, Theor. Appl. Clim. 49, 217–224.Google Scholar
  57. Prell, W. L. and Kutzbach, J. E.: 1987, Monsoon variability over the past 150,000 years, J. Geophys. Res. 92, 8411–8425.Google Scholar
  58. Ramage, ?.: 1971, Monsoon meteorology, Academic Press New York and London. 296 pp.Google Scholar
  59. Rasmusson, E. M. and Arkin, P. A.: 1993, A global view of large scale precipitation variability, J. Clim. 6, 1495–1522.Google Scholar
  60. Rao, P. G.: 1994, Recent climatic changes over India, Climate Monitor 23, 38–52.Google Scholar
  61. Roeckner, E., Bengttson, L., Feichter, J., Lelieveld, J., and Rodhe, H.: 1998, Transient climate change simulations with a coupled atmosphere-ocean GCMincluding the tropospheric sulfur cycle, Max-Planck-Institut für Meteorologie Report Number 266.Google Scholar
  62. Rowell, D. P., Folland, C. K., Maskell, K., and Ward, M. N.: 1995, Variability of summer rainfall over tropical North Africa. (1906–1992): Observations and modeling, Quart. J. Roy. Meteorol. Soc. 121, 669–704.Google Scholar
  63. Rowntree, P. R. and Sangster, A. B.: 1986, Modelling the impact of land surface changes on Sahel rainfall, World Climate Research Program, Report 9.Google Scholar
  64. Shen, X., Kimoto, M., and Sumi, A.: 1998, Role of land surface processes associated with interannual variability of broad-scale Asian summer monsoon as simulated by the CCSR/NIES AGCM, J. Meteorol. Soc. Jap. 76, 217–236.Google Scholar
  65. Shi, N.: 1996, Features of the east Asian winter monsoon intensity on multiple time scale in recent 40 years and their relation to climate, Quart. J. App. Met. 7, 175–182.Google Scholar
  66. Shinoda, M.: 1995, West African rainbelt variation: an update to 1990, J. Met. Soc. Jap. 73, 259–266.Google Scholar
  67. Shinoda, M. and Kawamura, R.: 1994, Tropical rainbelt, circulation, and sea surface temperatures associated with the Sahelian rainfall trend, J. Meteorol. Soc. Jap. 72, 341–357.Google Scholar
  68. Song, Y., Longxun, C., and Dong, M.: 1994, Numerical simulation for the impact of deforestation on climate in China and its neighboring regions, Adv. Atmos. Sci. 11, 212–223.Google Scholar
  69. Srikanthan, R. and Stewart, B. J.: 1991, Analysis of Australian rainfall data with respect to climate variability and change, Aust. Met. Mag. 39, 11–20.Google Scholar
  70. Subbaramayya, I. and Naidu, C. V.: 1992, Spatial variations and trends in Indian monsoon rainfall, Int. J. Clim. 12, 597–609.Google Scholar
  71. Suppiah, R.: 1995, The Australian summer monsoon: CSIRO9 GCM simulations for 1xCO2 and 2xCO2 conditions, Global and Planetary Change 11, 95–109.Google Scholar
  72. Suppiah, R. and Hennessy, K. J.: 1996, Trends in the intensity and frequency of heavy rainfall in tropical Australia and links with the Southern Oscillation, Aust. Met. Mag. 45, 1–17.Google Scholar
  73. Wang, B. and Fan, Z.: 1999, Choice of South Asian summer monsoon indices, Bull. Amer. Met. Soc. 80, 629–638.Google Scholar
  74. Wang, H.: 1994, The monsoon precipitation variation in the climate change, Acta Meteorologie Sinica 9, 48–56.Google Scholar
  75. Webster, P. J.: 1987, The variable and interactive monsoon, In: Jay S. Fein and Pamela L. Stephens (eds), Monsoons, John Wiley and Sons, New York.Google Scholar
  76. Webster, P. J. and Yang, S.: 1992, Monsoon and ENSO: selective interactive systems, Quart. J. Roy. Meteor. Soc. 118, 877–926.Google Scholar
  77. 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, 289–317.Google Scholar
  78. Whetton, P. H., Rayner, P. J., Pittock, A. B., and Haylock, M. R.: 1994, An assessment of possible climate change in the Australian region based on an intercomparison of general circulation modelling results, J. Clim. 7, 441–463.Google Scholar
  79. Wilks, D. S.: 1997, Resampling hypothesis tests for autocorrelated fields, J. Clim. 10, 65–82.Google Scholar
  80. Xue, Y.: 1996, The impact of desertification in the Mongolian and inner Mongolian grassland on the regional climate, J. Clim. 9, 2173–2189.Google Scholar
  81. Zhang, Y., Sperber, K. R., and Boyle, J. S.: 1997, Climatology and interannual variability of the east Asian winter monsoon: results from 1979–1995 NCEP/NCAR reanalysis, Mon. Wea. Rev. 125, 2605–2619.Google Scholar
  82. Zhao, Z. and Kellog, W. W.: 1988, Sensitivity of soil moisture to doubling of carbon dioxide in climate model experiments, Pt. 2, Asian monsoon region, J. Clim. 1, 367–378.Google Scholar
  83. Zheng, X. and Eltahir, E. A. B.: 1998, The role of vegetation in the dynamics of west African monsoons. J. Clim. 11, 2078–2096.Google Scholar
  84. Zwiers, F. W. and Kharin, V. V.: 1998, Changes in the extremes of the climate simulated by the CCC GCM2 under CO2 doubling, J. Clim. 11, 2200–2222.Google Scholar

Copyright information

© Kluwer Academic Publishers 2003

Authors and Affiliations

  • T. N. Chase
    • 1
  • J. A. Knaff
    • 2
  • R. A. PielkeSr.
    • 3
  • E. Kalnay
    • 4
  1. 1.Cooperative Institute for Research in Environmental SciencesUniversity of ColoradoBoulderUSA
  2. 2.Cooperative Institute for Research in the AtmosphereColorado State UniversityFt. CollinsUSA
  3. 3.Department of Atmospheric ScienceColorado State UniversityFt. CollinsUSA
  4. 4.Department of MeteorologyUniversity of MarylandCollege ParkUSA

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