干旱区研究

Arid Zone Research >

2014 , Vol. 31 >Issue 6: 1046 - 1052

DOI: https://doi.org/10.13866/j.azr.2014.06.10

Climate Change

Ground Temperature Changing Trends and Characteristics of the Eastern Hexi Corridor

  • DIN Wen-kui ,
  • YIN Yu-chun ,
  • YANG Xiao-ling ,
  • ZHAO Dong-xu
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  • Wuwei Meteorological Bureau, Wuwei 733099, Gansu, China

Received date: 2013-05-04

  Revised date: 2013-07-12

  Online published: 2014-11-25

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Abstract

Based on the varied temperature data from four climatic stations in the eastern Hexi corridor in the recent 50 years, the extreme value, the spatial-temporal distribution and changing trends of the ground temperatures were analyzed by using the linear trend coefficient method. The results showed that the ground temperature in the low altitude plain was higher than in the high altitude mountain area. The annual ground temperature presented an increasing trend over the study period with a six to nine-year circle. The seasonal ground temperature presented an increasing trend as well with a big increase in spring and summer. The monthly ground temperature was consistent with an obvious peak value in July and bottom value in January. The annual and seasonal average maximum and minimum ground temperature were generally rising but in an inconsistent pace. The increase of the annual mean minimum temperature was faster that the increase of the annual mean maximum temperature. The annual extreme high and low ground temperatures were also raising over the study period. The increase of the extreme low temperature was greater than the increase of the annual extreme high temperature.

Key words： ground temperature; climate tendency rate; altitude; change trend; Hexi corridor

Cite this article

DIN Wen-kui , YIN Yu-chun , YANG Xiao-ling , ZHAO Dong-xu . Ground Temperature Changing Trends and Characteristics of the Eastern Hexi Corridor[J]. Arid Zone Research, 2014 , 31(6) : 1046 -1052 . DOI: 10.13866/j.azr.2014.06.10

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