Advertisement

Advances in Atmospheric Sciences

, Volume 25, Issue 4, pp 518–528 | Cite as

Influence of the Tibetan Plateau on the summer climate patterns over Asia in the IAP/LASG SAMIL model

  • Anmin Duan (段安民)
  • Guoxiong Wu (吴国雄)Email author
  • Xiaoyun Liang (梁潇云)
Article

Abstract

A series of numerical experiments are carried out by using the Spectral Atmospheric Model of State Key Laboratory of Numerical Modeling Atmospheric Sciences and Geophysical Fluid Dynamics/Institute of Atmospheric Physics (SAMIL) to investigate how the Tibetan Plateau (TP) mechanical and thermal forcing affect the circulation and climate patterns over subtropical Asia. It is shown that, compared to mechanical forcing, the thermal forcing of TP plays a dominant role in determining the large-scale circulation in summer. Both the sensible heating and the latent heating over TP tend to generate a surface cyclonic circulation and a gigantic anticyclonic circulation in the mid-and upper layers, whereas the direct effect of the latter is much more significant. Following a requirement of the time-mean quasi-geostrophic vorticity equation for large-scale air motion in the subtropics, convergent flow and vigorous ascending motion must appear to the east of TP. Hence the summer monsoon in East China is reinforced efficiently by TP. In contrast, the atmosphere to the west of TP is characterized by divergent flow and downward motion, which induces the arid climate in Mid-Asia.

Key words

Tibetan Plateau thermal forcing climate pattern numerical simulation 

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. Broccoli, A. J., and S. Manabe, 1992: The effects of orography on mid-latitude Northern Hemisphere dry climates. J. Climate, 5, 1181–1201.CrossRefGoogle Scholar
  2. Charney, J. G., and A. Elliassen, 1949: A numerical method for predicting the perturbations of the middle latitude westerlies. Tellus, 1, 38–55.Google Scholar
  3. Chou, C., 2003: Land-sea heating contrasts in an idealized Asian summer monsoon. Climate Dyn., 21, 11–15.CrossRefGoogle Scholar
  4. Duan, A. M., and G. X. Wu, 2005: Role of the Tibetan Plateau thermal forcing in the summer climate patterns over subtropical Asia. Climate Dyn., 24, 793–807.CrossRefGoogle Scholar
  5. Duan, A. M., Y. M. Liu, and G. X. Wu, 2005: Heating status of the Tibetan Plateau from April to June and rainfall and atmospheric circulation anomaly over East Asia in mid-summer. Science in China (D), 48, 250–257.Google Scholar
  6. Flohn, H., 1960: Recent investigation on the mechanism of the “summer monsoon” of southern and eastern Asia. Proc. Symp. Monsoon of the World, New Delhi, Hind Union Press, 75–78.Google Scholar
  7. Gill, A. E., 1980: Some simple solutions for heat-induced tropical circulation. Quart. J. Roy. Meteor. Soc., 106, 447–462.CrossRefGoogle Scholar
  8. Hahn, D. G., and S. Manabe, 1975: The role of mountain in the south Asian monsoon circulation. J. Atmos. Sci., 32, 1515–1541.CrossRefGoogle Scholar
  9. Hoskins, B. J., and D. J. Karoly, 1981: The steady linear response of a spherical atmosphere to thermal and orographic forcing. J. Atmos. Sci., 38, 1176–1196.Google Scholar
  10. Hoskins, B., 1991: Towards a PV-θ view of the general circulation. Tellus, 43, 27–35.Google Scholar
  11. Li, W. P., G. X. Wu, Y. M. Liu, and X. Liu, 2001: How the surface processes over the Tibetan Plateau affect the summertime Tibetan anticyclone—Numerical Experiments. Chinese J. Atmos. Sci., 25, 809–816. (in Chinese)Google Scholar
  12. Liu, H., and G. X. Wu, 1997: Impacts of land surface on climate of July and onset of summer monsoon: A study with an AGCM plus SSiB. Adv. Atmos. Sci., 14, 289–308.CrossRefGoogle Scholar
  13. Liu, X., G. X. Wu, and W. P. Li, 2001: Heating of the Tibetan Plateau and the large-scale thermal adaptation in summer. Progress in Natural Sciences, 11, 33–39.Google Scholar
  14. Liu, X. D., and Z. Y. Yin, 2002: Sensitivity of East Asian monsoon climate to the Tibetan Plateau uplift. Palaeogeography, Palaeoclimatology, Palaeoecology, 183, 223–245.CrossRefGoogle Scholar
  15. Liu, Y. M., H. Liu, P. Liu, and G. X. Wu, 1999: The effect of spatially nonuniform heating on the formation and variation of subtropical high. Part II: Land surface sensible heating and east Pacific Subtropical High. Acta Meteorologica Sinica, 57, 385–396.Google Scholar
  16. Manabe, S., J. Smagorinsky, and R. F. Strickler, 1965: Simulated climatology of a general circulation model with a hydrological cycle. Mon. Wea. Rev., 93, 769–798.CrossRefGoogle Scholar
  17. Philips, N. A., 1973: Principles of large-scale numerical weather prediction. Dynamics Meteorology, P. Morel, Ed., D. Reidel Publishing Company, Dordrecht, Holland, 1–96.Google Scholar
  18. Rodwell, M. J., and B. J. Hoskins, 2001: Subtropical anticyclones and summer monsoons. J. Climate, 14, 3192–3211.CrossRefGoogle Scholar
  19. Shi, G. Y., 1981: An accurate calculation of the infrared transmission function of the atmospheric constituents. Ph. D. dissertation, Department of Meteorology, Tohoku University of Japan, 191pp.Google Scholar
  20. Wang, B., 1996: On the radiation transfer models for climate simulation. Ph. D. dissertation, Institute of Atmospheric Physics, Chinese Academy of Sciences, 92pp. (in Chinese)Google Scholar
  21. Wu, T. W., P. Liu, and Z. Z. Wang, 2003: The performance of atmospheric component model R42L9 of GOALS/LASG. Adv. Atmos. Sci., 20, 726–742.CrossRefGoogle Scholar
  22. Wu, G. X., 1984: The nonlinear response of the atmosphere to large-scale mechanical and thermal forcing. J. Atmos. Sci., 41, 2456–2476.CrossRefGoogle Scholar
  23. Wu, G. X., and Y. M. Liu, 2000: Thermal adaptation, overshooting, dispersion, and subtropical high. Part I: Thermal adaptation and overshooting. Chinese J. Atmos. Sci., 24, 433–436. (in Chinese)Google Scholar
  24. Wu, G. X., and Y. M. Liu, 2003: Summertime quadruplet heating pattern in the subtropics and the associated atmospheric circulation. Geophys. Res. Lett., 30, 1201.CrossRefGoogle Scholar
  25. Wu, G. X., W. P. Li, and H. Liu, 1997a: Sensible heating-driving air pump of the Tibetan Plateau and the Asian summer monsoon. Memorial Volume of Prof. J. Z. Zhao, D. Z. Ye, Ed., Science Press, Beijing, 126pp. (in Chinese)Google Scholar
  26. Wu, G. X., and Coauthors, 1997b: Global ocean-atmosphere-land system model of LASG (GOALS/LASG) and its performance in simulation study. Quart. J. Appl. Meteor., 8(Suppl.), 15–28. (in Chinese)Google Scholar
  27. Wu, G. X., Y. M. Liu, and J. Y. Mao, 2004: Adaptation of the atmospheric circulation to thermal forcing over the Tibetan Plateau. Observation, Theory and Modeling of Atmospheric Variability, X. Zhu, Eds., World Scientific Press, London, 92–114.Google Scholar
  28. Xue, Y. K., P. J. Sellers, J. L., Kinter, and J. Shukla, 1991: A simplified biosphere model for global climate studies. J. Climate, 4, 345–364.CrossRefGoogle Scholar
  29. Yanai, M., and G. X. Wu, 2006: Role of the Tibetan Plateau on Asia monsoon. The Asian Monsoon, B. Wang, Ed., Springer, Chichester, 513–629.CrossRefGoogle Scholar
  30. Yanai, M., C. Li, and Z. Song, 1992: Seasonal heating of the Tibetan Plateau and effects of the evolution of the Asian summer monsoon. J. Meteor. Soc. Japan, 70, 189–221.Google Scholar
  31. Yeh, T. C., 1950: The circulation of the high troposphere over China in the winter of 1945–1946. Tellus, 2, 173–183.CrossRefGoogle Scholar
  32. Yeh, T. C., and C. C. Chang. 1974: A preliminary experimental simulation on the heating effect of the Tibetan Plateau on the general circulation over Eastern Asia in China. Science in China (D), XVII, 397–420.Google Scholar
  33. Yeh, T. Z., and Y. X. Gao, 1979: Meteorology of the Qinghai-Xizang (Tibet) Plateau. Science Press, Beijing, 278pp.Google Scholar
  34. Yeh, T. Z., S. W. Lo, and P. C. Chu, 1957: On the heat balance and circulation structure in troposphere over Tibetan Plateau. Acta Meteorologica Sinica, 28, 108–121. (in Chinese)Google Scholar
  35. Zeng, Q. C., 1963: Characteristic parameter and dynamical equation of atmospheric motions. Acta Meteorologica Sinica, 33, 472–483. (in Chinese)Google Scholar
  36. Zhou, T. J., R. C. Yu, and Z. Z. Wang, 2005: The Atmospheric General Circulation Model SAMIL and Its Coupled Climate Model GOALS-s. China Meteorological Press, Beijing, 288pp.Google Scholar
  37. Zhu, B. Z., 1957a: The influences of large-scale heat source or heat sink and terrain on the steady disturbance in westerlies (Part A). Acta Meteorologica Sinica, 28, 122–140. (in Chinese)Google Scholar
  38. Zhu, B. Z., 1957b: The influences of large-scale heat source or heat sink and terrain on the steady disturbance in westerlies (Part B). Acta Meteorologica Sinica, 28, 198–211. (in Chinese)Google Scholar

Copyright information

© Chinese National Committee for International Association of Meteorology and Atmospheric Sciences, Institute of Atmospheric Physics, Science Press and Springer-Verlag GmbH 2008

Authors and Affiliations

  • Anmin Duan (段安民)
    • 1
  • Guoxiong Wu (吴国雄)
    • 1
    Email author
  • Xiaoyun Liang (梁潇云)
    • 2
  1. 1.State Key Laboratory of Numerical Modeling Atmospheric Sciences and Geophysical Fluid Dynamics, Institute of Atmospheric PhysicsChinese Academy of SciencesBeijingChina
  2. 2.National Climate CenterBeijingChina

Personalised recommendations