Wind-Chill Temperature Changes in Winter over China during the Last 50 Years

  • State Key Laboratory of Earth Surface Processes and Resource Ecology,College of Resources Science and Technology,Beijing Normal University,Beijing 100875,China

Received date: 2009-03-06

  Revised date: 2009-07-05

  Online published: 2009-09-25

Supported by

National Key Science and Technology Project,No.2007BAC29B02;R&D Special Fund for Public Welfare Industry (meteorology),No.GYHY200806010;National Natural Science Foundation of China, No.40675035


Based on the data of temperature and wind speed for the meteorological observation stations in China, and according to the latest WCT formula, this paper analyzed the wind-chill temperature changes in winter over China during the past 50 years. The mean WCT in winter rises by 3.2 oC in the period, with a rate of about 0.64 oC/10a. The warming rates of Southwest China, North China, Southeast China and Tibetan Plateau are 0.79 oC/10a, 0.84 oC/10a, 0.81 oC/10a and 0.80 oC/10a respectively; Simultaneously, the decreasing trend of the WCT in southern China (< 35 oN) is significantly lower than in northern, 0.39 oC/10a. The changes of WCT are the outcome of the combined effects of increasing temperature and decreasing wind speed. The fraction solely relates to the temperature. The wind speed is 2.4 oC and 0.8 oC in WCT, respectively. The results show that WCT might be affected by Siberian High, Arctic Oscillation, western Pacific teleconnection pattern and Eurasian pattern. The four circulation factors can explain the variance for mean winter WCT over China is 46.7%.

Cite this article

FENG Shen-ghui,GONG Dao-yi,ZHANG Zi-yin,HE Xue-zhao,GUO Dong,LEI Yan-gna . Wind-Chill Temperature Changes in Winter over China during the Last 50 Years[J]. Acta Geographica Sinica, 2009 , 64(9) : 1071 -1082 . DOI: 10.11821/xb200909005


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