Regional characteristics of temperature changes in China during the past 58 years and its probable correlation with abrupt temperature change

Gong Zhi-Qiang; Wang Xiao-Juan; Zhi Rong; Feng Guo-Lin

doi:10.7498/aps.58.4342

Abstract
Based on recent studies of nonlinear science, we reconstruct dynamics of National Centre of Environment Prediction （NCEP） daily temperature series from 1948 to 2005 of grids located in China with the time-delay method and then analyse the dynamics structure by using dynamical correlation factor exponent Q.Eight significant temperature change regions are obtained. The characteristics of temperature changes and frequencies of extreme temperature in these regions are discussed, and the probable correlations between temperature changes and frequencies of extreme temperature are studied. Results indicate that, 1） the temperature and frequencies of extreme high temperature in ZhunGe’Er and North China both increased during the past 58 years, while frequencies of extreme low temperature in South China decreased. Furthermore, north oscillation, south oscillation, North Pacific oscillation and El Nio-south oscillation have distinct influence on temperature changes in North China, North-East China, west of West-South China and east of West-South China, while El Nio has distinct influence on South China and South East China. 2） The reason for warming during the past 58 years might be the increase of frequencies of extreme high temperature and the decrease of frequencies of extreme low temperature. 3） The abrupt change of extreme high/low temperature in the 1970s is 3—4 years later than that of abrupt temperature change. That is to say, the process of abrupt temperature change might be the inter-grade of extreme temperature from one stationary period to another stationary one.

Keywords:
Q index /

temperature segment /

extreme temperature /

abrupt temperature change
Authors and contacts
Gong Zhi-Qiang³,

Wang Xiao-Juan¹,

Zhi Rong³,

Feng Guo-Lin²

(1)常熟理工学院物理与电子工程学院，常熟 215500; (2)国家气候中心中国气象局气候研究开放实验室，北京 100081；中国科学院大气物理研究所东亚区域气候-环境重点实验室，北京 100029; (3)扬州大学物理科学与技术学院，扬州 225002；国家气候中心中国气象局气候研究开放实验室，北京 100081
References

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Vol. 58, Issue 6 - 2009-03-20

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Regional characteristics of temperature changes in China during the past 58 years and its probable correlation with abrupt temperature change

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Regional characteristics of temperature changes in China during the past 58 years and its probable correlation with abrupt temperature change

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