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JOURNAL OF DESERT RESEARCH ›› 2016, Vol. 36 ›› Issue (2): 474-482.DOI: 10.7522/j.issn.1000-694X.2014.00212

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Climate Change around the Tengger Desert in 1960-2012

Liang Xiaoyan1, Wang Naiang1, Li Zhuolun1, Chang Peijing2, Jia Peng1, Niu Zhenmin1   

  1. 1. College of Earth and Environmental Science/Research Center for Arid Area and Desert, Lanzhou University, Lanzhou 730000, China;
    2. Alxa Meteorological Bureau, Alxa Left Banner 750306, Inner Mongolia, China
  • Received:2014-09-29 Revised:2014-12-10 Online:2016-03-20 Published:2016-03-20

Abstract: The meteorological data of 9 meteorological stations around the Tengger Desert are analyzed based on the liner regression method, 5-year moving average analysis method and Mann-Kendall abrupt test to get the climate change feature in this area in 1960-2012. The data includes monthly mean air temperature, mean maximum air temperature, mean minimum air temperature, precipitation, mean relative humidity, sunshine duration and mean wind speed in 1960-2012. The annual mean air temperature showed a significant increase with a rate of 0.34 ℃/10a in 1960-2012 and the abrupt change occurred in 1989. The increase of seasonal mean air temperature was also very apparent, with the most rapid increase of 0.52 ℃/10a in winter. The annual mean maximum air temperature and the annual mean minimum air temperature also increased significantly. But the annual mean minimum air temperature increased with a rate of 0.44 ℃/10a, which was faster than the annual mean maximum air temperature with a rate of 0.25 ℃/10a. This asymmetry resulted in the obvious decrease of annual and seasonal mean daily air temperature range in a rate of 0.18 ℃/10a. The precipitation increased slightly with a rate of 1.08 mm/10a, and the seasonal precipitation increased also. The fluctuation of wetness index is not significant, with an overall decrease trend in annual, spring, summer and autumn while increase in winter. Annual and seasonal mean wind speed change showed a dramatic decrease. The annual mean wind speed decreased with a rate of 0.15 m·s-1·(10a)-1. Annual sunshine duration increased with a rate of 5.6 h/10a. Seasonal sunshine duration changed differently in different seasons: it increased slightly in spring and summer and decreased slightly in autumn and winter.

Key words: Tengger Desert, arid region, climate change

CLC Number: