Trends on the Daily Mean Air Temperature and Its Anomalous Strength in China for the Warm Season in the Last 40 Years

  • Department of Atmospheric Science, College of Physics, Peking University, Beijing 100871, China

Received date: 2003-03-01

  Revised date: 2003-04-26

  Online published: 2003-12-25

Supported by

The Ministry of Education of China, No.20010001052; National Key Project for Basic Sciences, No.G1999043405


Trends on the daily mean air temperature and its anomalous strength in China for the warm season (May-September) in the last 40 years (1961-2000) were analyzed using observational 453-station datasets including daily temperature and daily precipitation. Calculation methods are standard deviation and Skewness. Results show that there were different spatial-temporal characteristics in the daily air temperature variability. In the last 40 years, a warming trend was commonly noted in China but the stronger warming was located in the area north of the Yellow River. For the time evolution, a transition time point was found in the late 1970s from a cooling trend to a warming trend but the stronger warming appeared since the late 1990s. The amplifying daily temperature anomaly indicated a trend of climate variability in many places of China. The relationships between daily air temperature and rainfall events were also discussed particularly in the coastal regions.

Cite this article

LIN Xiang, QIAN Weihong . Trends on the Daily Mean Air Temperature and Its Anomalous Strength in China for the Warm Season in the Last 40 Years[J]. Acta Geographica Sinica, 2003 , 58(7s) : 21 -30 . DOI: 10.11821/xb20037s003


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