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Volume 379
Proc. IAHS, 379, 187-192, 2018
https://doi.org/10.5194/piahs-379-187-2018
© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 4.0 License.
Proc. IAHS, 379, 187-192, 2018
https://doi.org/10.5194/piahs-379-187-2018
© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 4.0 License.

Pre-conference publication 05 Jun 2018

Pre-conference publication | 05 Jun 2018

Multi-scale fluctuation analysis of precipitation in Beijing by Extreme-point Symmetric Mode Decomposition

Jiqing Li, Zhipeng Duan, and Jing Huang Jiqing Li et al.
  • Renewable Energy School, North China Electric Power University, Beijing 102206, China

Abstract. With the aggravation of the global climate change, the shortage of water resources in China is becoming more and more serious. Using reasonable methods to study changes in precipitation is very important for planning and management of water resources. Based on the time series of precipitation in Beijing from 1951 to 2015, the multi-scale features of precipitation are analyzed by the Extreme-point Symmetric Mode Decomposition (ESMD) method to forecast the precipitation shift. The results show that the precipitation series have periodic changes of 2.6, 4.3, 14 and 21.7 years, and the variance contribution rate of each modal component shows that the inter-annual variation dominates the precipitation in Beijing. It is predicted that precipitation in Beijing will continue to decrease in the near future.

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With the aggravation of the global climate change,using reasonable methods to study changes in precipitation is very important for planning and management of water resources. Based on the time series of precipitation in Beijing from 1951 to 2015, the multi-scale features of precipitation are analyzed by the Extreme-point Symmetric Mode Decomposition (ESMD) method. The results show that the precipitation series have periodic changes of 2.6 years, 4.3 years, 14 years and 21.7 years.
With the aggravation of the global climate change,using reasonable methods to study changes in...
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