JDR Vol.3 No.1 pp. 39-50
doi: 10.20965/jdr.2008.p0039


Potential Changes in Extreme Events Under Global Climate Change

Koji Dairaku*, Seita Emori**, and Hironori Higashi**

*National Research Institute for Earth Science and Disaster Prevention, Japan

**National Institute for Environmental Studies, Japan

January 31, 2008
March 6, 2008
February 1, 2008
extreme, global climate change, general circulation model, flood risk, Asia

Climate-related disasters are a serious problem in Asia. Advances in the understanding of meteorology and in the development of monitoring and forecasting systems have enhanced early warning systems, contributing immensely to reducing fatalities resulting from typhoons, cyclones, and floods. The frequency of extreme events causing water-related disasters has increased, however, over the last decade and may grow in the future due to anthropogenic activity. The sections that follow introduce two recent efforts in hydrologic projection in Asia.
Time-slice ensemble experiments using a high-resolution (T106) atmospheric general circulation model (AGCM) on the earth simulator revealed changes in the South Asian summer monsoon resulting from climate change. Model results under global warming conditions suggest increases in mean and extreme precipitation during the Asian summer monsoon. increases generally attributed to greater atmospheric moisture content. a thermodynamic change. Dynamic changes limit the intensification of mean precipitation. Enhanced extreme precipitation over land in South Asia arises from dynamic rather than thermodynamic changes. The impact of global warming on heavy precipitation features and flood risks in the Tama River basin in Japan is addressed using 12 atmosphere-ocean coupled general circulation models (AOGCMs). Multi-model ensemble average 200-year quantiles in Tokyo from 2050 to 2300 under Intergovernmental Panel on Climate Changes (IPCC) Special Reports on Emissions Scenarios (SRES) A1B scenario climate conditions were 1.07-1.20 times greater than that under present climate conditions. A 200-year quantile extreme event in the present occurs in much shorter return periods in the A1B scenario. High-water discharge in the basin rose by 10%-26% and flood volume increased by 46%-131% for precipitation in a 200-year return period. The risk of flooding in the basin is thus, even though the increase of extreme precipitation is not substantial, projected to be much higher than that presently estimated.

  1. [1] IPCC, “Climate Change 2007: The physical science basis,” Summary for policymakers, Contribution of working group I to the fourth assessment report of the Intergovernmental Panel on Climate Change, 2007.
  2. [2] R. Schnur, “The investment forecast,” Nature, 415, pp. 483-484, 2002.
  3. [3] T. N. Palmer and J. Ralsanen, “Quantifying the risk of extreme seasonal precipitation events in a changing climate,” Nature, 415, pp. 512-514, 2002.
  4. [4] K. E. Trenberth, A. Dai, R. M. Rasmussen, and D. B. Parsons, “The changing character of precipitation,” Bulletin of the American Meteorological Society, 84, pp. 1205-1217, 2003.
  5. [5] I. M. Held and B. J. Soden, “Robust responses of the hydrological cycle to global warming,” Journal of climate, 19, pp. 5686-5699, 2006.
  6. [6] B. J. Soden, D. L. Jackson, V. Ramaswamy, M. D. Schwarzkopf, and X. Huang, “The radiative signature of upper tropospheric moistening,” Science, 310, pp. 841-844, 2005.
  7. [7] K. Emanuel, “Increasing destructiveness of tropical cyclones over the past 30 years,” Nature, 436, pp. 686-688, 2005.
  8. [8] P. J. Webster, G. J. Holland, J. A. Curry, and H.-R. Chang, “Changes in topical cyclone number, duration, and intensity in a warming environment,” Science, 309, pp. 1844-1846, 2005.
  9. [9] A. Hasegawa and S. Emori, “Tropical cyclones and associated precipitation over the Western North Pacific: T106 atmospheric GCM simulation for present-day and doubled CO2 climates,” Scientific Online Letters on the Atmosphere, 1, pp. 145-148, 2005.
  10. [10] K. Oouchi, J. Yoshimura, H. Yoshimura, R. Mizuta, S. Kusunoki, and A. Noda, “Tropical cyclone climatology in a global-warming climate as simulated in a 20 km-mesh global atmospheric model: Frequency and wind intensity analyses,” Journal of the Meteorological Society of Japan, 84(2), pp. 259-276, 2006.
  11. [11] M. T. Coe, “Modeling terrestrial hydrological systems at the continental scale: testing the accuracy of an atmospheric GCM,” Journal of Climate, 13, pp. 686-704, 2000.
  12. [12] R. D. Koster, M. J. Suarez, and M. Heiser, “Variance and predictability of precipitation at seasonal-to-interannual timescales,” Journal of Hydrometeorology, 1, pp. 26-46, 2000.
  13. [13] C. J. Vorosmarty, P. Green, J. Salisbury, and R. B. Lammers, “Global water resources: vulnerability from climate change and population growth,” Science, 289, pp. 284-288, 2000.
  14. [14] P. C. D. Milly, R. T. Wetherald, K. A. Dunne, and T. L. Delworth, “Increasing risk of great foods in a changing climate,” Nature, 415, pp. 514-517, 2002.
  15. [15] G. A. Meehl and W. M. Washington, “South Asian summer monsoon variability in a model with doubled atmospheric carbon dioxide concentration,” Science, 260, pp. 1101-1104, 1993.
  16. [16] G. A. Meehl and J. M. Arblaster, “Mechanisms for projected future changes in South Asian monsoon precipitation. Climate Dynamics,” 21, pp. 659-675, 2003.
  17. [17] B. Bhaskaran, J. F. B. Mitchell, J. R. Lavery, and M. Lal, “Climatic response of the Indian subcontinent to doubled CO2 concentrations,” International Journal of Climatology, 15, pp. 873-892, 1995.
  18. [18] A. Kitoh, S. Yukimoto, A. Noda, and T. Motoi, “Simulated changes in the Asian summer monsoon at times of increased atmospheric CO2 ,” Journal of the Meteorological Society of Japan, 75, pp. 1019-1031, 1997.
  19. [19] Z.-Z. Hu, M. Latif, E. Roeckner, and L. Bengtsson, “Intensified Asian summer monsoon and its variability in a coupled model forced by increasing greenhouse gas concentrations,” Geophysical Research Letters, 27, pp. 2681-2684, 2000.
  20. [20] R. G. Ashrit, H. Douville, and K. Rupa Kumar, “Response of the Indian monsoon and ENSO-monsoon teleconnection to enhanced greenhouse effect in the CNRM coupled model,” Journal of the Meteorological Society of Japan, 81, pp. 779-803, 2003.
  21. [21] H. Douville, J.-F. Royer, J. Polcher, P. M. Cox, N. Gedeney, D. B. Stephenson, and P. J. Valdes, “Impact of CO2 doubling on the Asian summer monsoon: Robust versus model-dependent responses.” Journal of the Meteorological Society of Japan, 78, pp. 421-439, 2000.
  22. [22] W. May, “Potential future changes in the Indian summer monsoon due to greenhouse warming: analysis of mechanisms in a global time-slice experiment,” Climate Dynamics, 22, pp. 389-414, 2004.
  23. [23] J. F. B. Mitchell and T. C. Johns, “On modification of global warming by sulfate aerosols. Journal of Climate,” 10, pp. 245-267, 1997.
  24. [24] W. May, “Simulation of the variability and extremes of daily rainfall during the Indian summer monsoon for present and future times in a global time-slice experiment,” Climate Dynamics, 22, pp. 183-204, 2004.
  25. [25] S. Emori and S. J. Brown, “Dynamic and thermodynamic changes in mean and extreme precipitation under changed climate,” Geophysical Research Letters, 32, L17706, 2005.
  26. [26] K. Dairaku and S. Emori, “Dynamic and thermodynamic influences on intensified daily rainfall during the Asian summer monsoon under doubled atmospheric CO2 conditions,” Geophysical Research Letters, 33, L01704, 2006.
  27. [27] A. Numaguti, M. Takahashi, T. Nakajima, and A. Sumi, “Description of CCSR/NIES atmospheric general circulation model. CGER’s Supercomputer Monograph Report,” 3, pp. 1-48, Center for Global Environmental Research, National Institute for Environmental Studies, 1997.
  28. [28] S. Emori, A. Hasegawa, T. Suzuki, and K. Dairaku, “Validation, parameterization dependence and future projection of daily precipitation simulated with a high-resolution atmospheric GCM,” Geophysical Research Letters, 32, L06708, 2005.
  29. [29] N. A. Rayner, D. E. Parker, E. B. Horton, C. K. Folland, L. V. Alexander, D. P. Rowell, E. C. Kent, and A. Kaplan, “Global analyses of sea surface temperature, sea ice, and night marine air temperature since the late nineteenth century,” Journal of Geophysical Research, 108, 4407, 2003.
  30. [30] N. A. Sontakke, G. B. Plant, and N. Singh, “Construction of all India rainfall series for the period 1844-1991,” Journal of Climate, 6, pp. 1807-1811, 1993.
  31. [31] P. J. Webster and S. Yang, “Monsoon and ENSO: Selectively interactive systems,” The Quarterly Journal of the Royal Meteorological Society, 118, pp. 877-926, 1992.
  32. [32] B. N. Goswami, V. Krishnamurthy, and H. Annamalai, “A broad scale circulation index for interannual variability of the Indian summer monsoon,” The Quarterly Journal of the Royal Meteorological Society, 125, pp. 611-633, 1999.
  33. [33] K. Dairaku, S. Emori, and T. Nozawa, “Hydrological projection under the global warming in Asia with a regional climate model nested in a general circulation model,” Annual Journal of Hydraulic Engineering, JSCE, 49(1), pp. 397-402, 2005 (in Japanese with an English Summary).
  34. [34] K. Dairaku, S. Emori, “Potential hydrological change resulting from greenhouse warming: Climate change and water-related disasters of severe tropical storms in East Asia,” Research Signpost “Geophysics,” Tomonori Matsuura, Ryuichi Kawamura Eds., pp. 105-123, 2007.
  35. [35] C. L. Castro, R. A. Pielke Sr, and G. Leoncini, “Dynamical downscaling: Assessment of value retained and added using the Regional Atmospheric Modeling System (RAMS),” Journal of Geophysical Research, 110, D05108, 2005.
  36. [36] H. Higashi, “Influences of climate change on the frequencies of storm rainfalls and flood disasters,” Research Signpost “Geophysics,” Tomonori Matsuura, Ryuichi Kawamura Eds., pp. 125-143, 2007.
  37. [37] J. R. Stedinger, R. M. Vogel, and E. Foufoula-Georgiou, “Frequency Analysis of Extreme Events,” Handbook of Hydrology, D. J. Maindment Ed. McGraw-Hill, ch. 18, pp. 1-66, 1993.
  38. [38] Y. Iwagaki, “Fundamental studies on the runoff analysis by characteristics,” Bulletin of the Disaster Prevention Research Institute, Kyoto University, 5(10), pp. 1-25, 1955.
  39. [39] K. Inoue, K. Toda, and O. Maeda, “Inundation model in the region of river network system and its application to Mekong delta,” Annual Journal of Hydraulic Engineering, JSCE, 44, pp. 485-490, 2000.
  40. [40] H. Douville, “Limitations of time-slice experiments for predicting regional climate change over South Asia,” Climate Dynamics, 24, pp. 373-391, 2005.
  41. [41] Y. Iwagaki, “Fundamental studies on the runoff analysis by characteristics,” Bulletin of the Disaster Prevention Research Institute, Kyoto University, 5(10), pp. 1-25, 1955.
  42. [42] A. Hasegawa and S. Emori, “Effect of air-sea coupling in the assessment of CO2-induced intensification of tropical cyclone activity,” Geophysical Research Letters, 34, L05701, 2007.
  43. [43] R. A. Sr. Pielke, “Discussion Forum: A broader perspective on climate change is needed,” IGBP Newsletter, 59, pp. 16-19, 2004.

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Last updated on Oct. 20, 2017