Analysis of Temperature Range from 1961 through 2000 across China
Received date: 2004-03-17
Revised date: 2004-06-07
Online published: 2004-09-25
Supported by
National Key Research Foundation of China No. G1999043405, National Natural Science Foundation of China, No.40375028
Based on China's daily temperature data during 1961-2000, we analysed monthly averaged diurnal temperature range, seasonally averaged diurnal temperature range, yearly averaged diurnal temperature range, monthly temperature range, seasonal temperature range and annual temperature range in different areas of China. The results show that the decreasing trends of monthly averaged diurnal temperature range and seasonally averaged diurnal temperature range in most parts of China in spring and summer are greater than those in other seasons, and weaker in autumn than in other seasons. The yearly averaged temperature range also displays significant declining trends in most parts of China. While the decreasing trends of monthly temperature range are greater at the end of winter and spring than those in other seasons and the decreasing trends of seasonal temperature range are greatest in summer, other seasons have not evident decreasing trends. Yearly temperature range also displays evident decreasing trends in China. There exists an obvious regional difference in trends of them in China. The decreasing trends of monthly averaged diurnal temperature range, seasonally averaged diurnal temperature range and yearly averaged diurnal temperature range are obvious in Northeast China and Xinjiang Uygur Autonomous Region, and lower than in other areas of southern North China. As a whole, the decreasing trends of monthly averaged diurnal temperature range and seasonally averaged diurnal temperature range are more obvious in North China than in the South. And the decreasing trends of monthly temperature range are more obvious in North China than in the South. The decreasing trends of seasonal temperature range are obvious in those regions lying from Inner Mongolia to Southwest China and the southern part of North China in summer. The decreasing trends of annual temperature range are more obvious in East China than in the West.
HUA Lijuan, Ma Zhuguo, LUO Dehai . Analysis of Temperature Range from 1961 through 2000 across China[J]. Acta Geographica Sinica, 2004 , 59(5) : 680 -688 . DOI: 10.11821/xb200405005
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