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Spatial and Temporal Variation of Climate Extremes in Southwestern China

  • Zongxing Li
Chapter
Part of the Springer Theses book series (Springer Theses)

Abstract

Analysis of changes in twelve indices of extreme temperature and eleven of extreme precipitation at 110 meteorological stations in southwestern China during 1961–2008 revealed statistically significant increases in the temperature of the warmest and coldest nights, in the frequencies of extreme warm days and nights, and in the growing season length. Decreases of the diurnal temperature range and the number of frost days were statistically significant, but a decreasing trend of ice days was not significant. At a large proportion of the stations, patterns of temperature extremes were consistent with warming since 1961. Warming trends in minimum temperature indices were greater than those relating to maximum temperature. Warming magnitudes were greater on the Xizang Plateau and the Hengduan Mountains than on the Yunnan–Guizhou plateau and in the Sichuan basin, as confirmed by the decrease of the regional trend from west to east. Changes in precipitation extremes were relatively small, and only the regional trends in consecutive wet days, extremely wet day precipitation and maximum 1-day precipitation were significant. These trends are difficult to detect against the larger interannual and decadal-scale variability of precipitation. On the whole, the number of rainy days increased on the Xizang Plateau and in the Hengduan Mountains, but the rainy strength has also increased at lower altitude areas. Analysis of large-scale atmospheric circulation changes reveals that a strengthening anticyclonic circulation, increasing geopotential height, weakening monsoonal flow and vapor transportation over the Eurasian continent have contributed to the changes in climate extremes in southwestern China. The spatial distribution of temporal changes of all climate extreme indices in southwestern China reflects the obvious altitude dependence. Trend magnitudes of temperature extremes are significantly higher for flat stations, and followed by summit, intermountain basin, and valley stations. It is obvious that the larger decreasing trend in summit station, and following is flat stations; whereas the greater increasing trend mainly occurred in valley stations in southwestern China, and the intermountain stations also showed the lower decrease or increase. In addition, the mean contribution of the UHI effect to regional trends of urban stations for cold extremes and warm extremes were 16.0 % and 7.9 %, respectively, based on the preliminary evaluation.

Keywords

Xizang Plateau Urban Heat Island Sichuan Basin Diurnal Temperature Range Extreme Precipitation Event 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

References

  1. Aguilar, E., et al. (2005). Changes in precipitation and temperature extremes in Central America and northern South America, 1961–2003. Journal Geophysical Research, 110, 23107.CrossRefGoogle Scholar
  2. Aguilar, E., et al. (2009). Changes in temperature and precipitation extremes in western central Africa, Guinea Conakry, and Zimbabwe, 1955–2006. Journal Geophysical Research, 114, D02115.CrossRefGoogle Scholar
  3. Alexander, L. V., et al. (2006). Global observed changes in daily climate extremes of temperature and precipitation. Journal Geophysical Research, 111, D05109.CrossRefGoogle Scholar
  4. Choi, Y., et al. (2003). Adjusting urban bias in the regional mean surface temperature series of South Korea, 1968–99. International Journal of Climatology, 23, 577–591. doi: 10.1002/joc.881.CrossRefGoogle Scholar
  5. Dash, S. K., et al. (2008). Changes in the characteristics of rain events in India. Journal Geophysical Research, 114, D10109.CrossRefGoogle Scholar
  6. Ding, Y., et al. (2005). Detection, causes and projection of climate change over China: An overview of recent progress. Paper presented at the 9th Scientific Assembly of the International Association of Meteorology and Atmospheric Sciences (IAMAS-2005), Beijing, China.Google Scholar
  7. Easterling, D. R., et al. (2000). Climate extremes: Observations, modeling, and impacts. Science, 289, 2068–2074.CrossRefGoogle Scholar
  8. Gong, D., & Wang, S. (2000). Severe summer rainfall in China associated with enhanced global warming. Climatic Research, 16, 51–59.CrossRefGoogle Scholar
  9. Griffiths, G. M., et al. (2005). Change in mean temperature as a predictor of extreme temperature change in the Asia-Pacific region. International Journal of Climatology, 25, 1301–1330.CrossRefGoogle Scholar
  10. Guo, Q. Y., et al. (2003). Interdecadal variability of East-Asian summer monsoon and its impact on the climate of China. Journal of Geographical Sciences, 58(4), 569–576. (in Chinese).Google Scholar
  11. Intergovernmental Panel on Climate Change (IPCC). (2007). Summary for policy makers. In S. Solomon et al. (Eds.) Climate Change 2007: The Physical Science Basis. Contribution of Working Group I to the Fourth Assessment Report of the Intergovernmental Panel on Climate Change (pp. 1–13). Cambridge: Cambridge University Press.Google Scholar
  12. Jones, P. D., et al. (2008). Urbanization effects in large-scale temperature records, with an emphasis on China. Journal Geophysical Research, 113, D16132.CrossRefGoogle Scholar
  13. Kim, Y. H., & Baik, J. J. (2002). Maximum urban heat island intensity in Seoul. Journal of Applied Meteorology, 41, 651–659.CrossRefGoogle Scholar
  14. Klein Tank, A. M. G., et al. (2006). Changes in daily temperature and precipitation extremes in central and south Asia. Journal Geophysical Research, 111, 16105.CrossRefGoogle Scholar
  15. Li, Z. et al. (2012a). Changes of daily climate extremes in southwestern China during 1961–2008. Global and Planetary Change, 80–81, 255–272.Google Scholar
  16. Li, Z. et al. (2012b). Altitude dependency of trends of daily climate extremes in southwestern China, 1961–2008. Journal of Geographical Sciences, 22(3), 416–430.CrossRefGoogle Scholar
  17. Liu, J. X. et al. (2006). Change features of annual precipitation of global land in 1948–2003. 26(3), Acta Geographica Sinica, 28–31 (in Chinese).Google Scholar
  18. Liu, X. et al. (2009a). Elevation dependency of recent and future minimum surface air temperature trends in the Tibetan Plateau and its surroundings. Global and Planetary Change. doi: 10.1016/j.gloplacha.2009.03.07.
  19. Liu, B., et al. (2009b). Characteristics of climate changes in Xinjiang from 1960 to 2005. Climatic and Environmental Research, 14(4), 414–426. (in Chinese).Google Scholar
  20. Manton, M. J., et al. (2001). Trends in extreme daily rainfall and temperature in Southeast Asia and the South Pacific: 1961–1998. International Journal of Climatology, 21, 269–284.CrossRefGoogle Scholar
  21. New, M., et al. (2006). Evidence of trends in daily climate extremes over Southern and West Africa. Journal Geophysical Research, 111, 14102.CrossRefGoogle Scholar
  22. Pepin, N. C., & Seidel, D. J. (2005). A global comparison of surface and free-air temperatures at high elevations. Journal Geophysical Research, 110, D03104.Google Scholar
  23. Qin, D. et al. (2005). Climate and environmental evolution in China. Beijing: Science Press. (in Chinese).Google Scholar
  24. Ren, G., et al. (2008). Urbanization effects on observed surface air temperature trends in north China. Journal of Climate, 21, 1333–1348.CrossRefGoogle Scholar
  25. Vincent, L. A., et al. (2005). Observed trends in indices of daily temperature extremes in South America 1960–2000. Journal of Climate, 18, 5011–5023.CrossRefGoogle Scholar
  26. Wang, H. (2001). The weakening of the Asian monsoon circulation after the end of 1970s. Advances in Atmospheric Sciences, 18, 376–386.CrossRefGoogle Scholar
  27. Wu, Z. X. (2005). Analysis on observational data of meteorology in modern China. Meteorology, 31(1), 82–85. (in Chinese).Google Scholar
  28. Xu, X., et al. (2006a). An investigation of sanddust storm events and land surface characteristics in China using NOAA/NDVI data. Global and Planetary Change, 52, 182–196.CrossRefGoogle Scholar
  29. Xu, M., et al. (2006b). Steady decline of east Asian monsoon winds, 1969–2000: Evidence from direct ground measurements of wind speed. Journal Geophysical Research, 111, D24111.CrossRefGoogle Scholar
  30. You, Q., et al. (2008a). Changes in daily climate extremes in the eastern and central Tibetan Plateau during 1961–2005. Journal of Geophysical Research. doi: 10.1029/2007JD009389.
  31. You, Q., et al. (2008b). Relationship between trends in temperature extremes and elevation in the eastern and central Tibetan Plateau, 1961–2005. Geophysical Research Letters, 35, 04704.CrossRefGoogle Scholar
  32. You, Q., et al. (2010a). Changes in daily climate extremes in China and their connection to the large scale atmospheric circulation during 1961–2003. Climate Dynamics. doi: 10.1007/s00382-009-0735-0.
  33. You, Q. L., et al. (2010b). Relationship between temperature trend magnitude, elevation and mean temperature in the Tibetan Plateau from homogenized surface stations and reanalysis data. Global and Planetary Change, 71(1–2), 124–133.CrossRefGoogle Scholar
  34. You, Q. L., et al. (2010c). From brightening to dimming in sunshine hours over the eastern and central Tibetan Plateau (1961–2005). Theoretical and Applied Climatology, 101, 445–457.CrossRefGoogle Scholar
  35. You, Q. L., et al. (2010d). Decreasing wind speed and weakening latitudinal surface pressure gradients in the Tibetan Plateau. Climatic Research, 42, 57–64.CrossRefGoogle Scholar
  36. Zhai, P., & Pan, X. H. (2003). Trends in temperature extremes during 1951–1999 in China. Geophysical Research Letters, 30, 1913.CrossRefGoogle Scholar
  37. Zhang, Q., et al. (2005a). Review of advances in the global climate change and its influencing factors. Advance in Earth Sciences, 20(9), 990–997. (in Chinese).Google Scholar
  38. Zhang, X. B., et al. (2005b). Trends in Middle East climate extreme indices from 1950 to 2003. Journal Geophysical Research, 110, 22104.CrossRefGoogle Scholar
  39. Zhang, A. Y., et al. (2008a). Analysis on trend of wind speed at high altitude in China over the past 30 years. Plateau Meteorology, 28(3), 680–687. (in Chinese).Google Scholar
  40. Zhang, J. Y., et al. (2008b). Study on runoff trends of the main rivers in China in the recent 50 years. China Water Resources, 2, 31–34. (in Chinese).Google Scholar
  41. Zhang, Q., et al. (2008c). Spatial and temporal variability of precipitation maxima during 1960–2005 in the Yangtze River basin and possible association with large-scale circulation. Journal of Hydrology, 353, 215–227.CrossRefGoogle Scholar

Copyright information

© Springer-Verlag Berlin Heidelberg 2015

Authors and Affiliations

  1. 1.Cold and Arid Region Environment and Engineering Research InstituteChinese Academy of SciencesLanzhouChina

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