| 天气与气候 |
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| Response of Desert Climate Change to Global Warming in Minqin, China |
| CHANG Zhao-feng1,2,3, HAN Fu-gui1,2,3, ZHONG Sheng-nian1,2,3 |
| 1.Minqin National Station for Desert Steppe Ecosystem Studies, Wuwei 733300, Gansu, China; 2.Gasu Key Laboratory of Desertification Combating, Lanzhou 730070, China; 3.Gansu Desert Control Research Institute, Lanzhou 730070, China |
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Abstract Global warming is a widespread concern around the world in recent years. How does desert climate respond to global warming then? In this paper, Minqin county in Gansu province of China, a typical desert area in northwest China, was selected as an example to analyze the response by the use of temperature data, precipitation, relative air humidity, sandstorm days and other related data since 1961. The increase rate of annual average temperature in the study area was higher than the global increase rate in the 20th century and the last 100 years increase rate in China. Analysis of monthly average temperature showed different increase trend in Nov. to Dec. and Feb. to Jun., and the most significant climate warming happened in February. Change amplitude of the highest temperature increased significantly since 1980s the globally warmest period, but the lowest temperature dropped intermittently. So the instability of the highest and the lowest temperature increased. Analysis of annual precipitation showed an upward trend in the study area. Sandstorm days decreased significantly since 1956, and the increase of relative air humidity since 1961 in the study area was main reason.
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Received: 03 August 2010
Published: 20 March 2011
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2011, Vol. 31 
