Analysis of Extreme Temperature Events in North China Based on EMD Method

Abstract:

The spatio-temporal variations of extreme temperature in North China during 1954-2008 are analyzed based on Empirical Mode Decomposition (EMD) method. The results show that the interannual-to-interdecadal variabilities of extreme temperature in North China. 3-4 years and 7-8 years interannual variabilities as well as a decreasing trend are dominant while 15 years oscillation takes second place in the extreme low temperature variation. Meanwhile, 3-4 year interannual variabilities are dominant while 6-7 years, 14-15 years 40 years oscillation as well as an increasing trend takes second place in the extreme high temperature variation. 3-4 years interannual variabilities of both extreme low and high temperature are closely related to El Nino-Southern Oscillation (ENSO), while interdecadal variabilities and trend of extreme temperature are obviously associated with the Pacific Decadal Oscillation (PDO). Besides, PDO plays an important role on interdecadal modulation of interannual to decadal variabilities of extreme temperature in North China.

• Periodical: Applied Mechanics and Materials (Volumes 295-298)
• Pages: 854-858
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.295-298.854
• Online since: February 2013
• Authors: Xiao Ying Chen, Yi Min Zhu, Lin Lin Xia, Wei Xing Zhang
• Keywords: Climate Variability, Empirical Mode Decomposition (EMD), Extreme Temperature, Intrinsic Mode Function (IMF)

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