PROGRESS IN GEOGRAPHY ›› 2012, Vol. 31 ›› Issue (11): 1426-1432.doi: 10.11820/dlkxjz.2012.11.002

• Original Articles • Previous Articles     Next Articles

Reconstruction and Analysis on the Series of Winter-half-year Temperature Change during the Qing Dynasty in the Northern China Region

YAN Junhui1,2, GE Quansheng1, ZHENG Jingyun1   

  1. 1. Institute of Geographic Sciences and Natural Resources Research, CAS, Beijing 100101, China;
    2. Graduate University of Chinese Academy of Sciences, Beijing 100049, China
  • Received:2012-06-01 Revised:2012-07-01 Online:2012-11-25 Published:2012-11-25

Abstract: Based on the records of irregular first and last frost dates from the historical documents during the Qing Dynasty, the winter-half-year temperatures in northern China region are reconstructed at a five-year resolution by applying a conversion function to the historical records obtained from examining the correlation between the changes of first and last frost dates and the changes of instrument-measured regional mean temperatures in more recent years. The characteristics of temperature changes in that period are analyzed. The results indicate that: (1) the climate in northern China region in the Qing Dynasty can be characterized as cold. The mean winter- half-year temperature of that time period in the region is 0.55℃ lower than that of the present time (1951-1980), with a 1.42℃ difference in the coldest five years (1656-1660). (2) The centennial scale climate variations show a“cold-warm-cold”pattern. The two cold periods appear around 1646-1700 and 1781-1910, when the winter-half-year temperature in northern China region is about 0.77℃ and 0.58℃ lower than that of the present days respectively. During the period of 1701-1780, the climate is relatively warm, but the winter- half-year temperature is still lower than that of the present days (by 0.36℃ difference). (3) At a higher time resolution, relatively small temperature fluctuations are observed within each cold and warm time period, with two“cold troughs”during the late Qing Dynasty (1781-1910).

Key words: Qing Dynasty, temperature reconstruction, the northern China region, winter-half-year