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Quantitative Analysis of Annual Precipitation in Extreme Precipitation Areas

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DOI: 10.23977/erej.2022.060211 | Downloads: 3 | Views: 62

Author(s)

Hanzhi Zhang 1, Wenjing Zhao 1

Affiliation(s)

1 School of Business, Xi’an International Studies University, Xi’an 710128, China

Corresponding Author

Hanzhi Zhang

ABSTRACT

This paper analyzed the characteristics of annual changes in areas with extreme rainfall to better understand the precipitation patterns. Trend analysis, cycle analysis and mutation analysis were carried out on the historical precipitation of Zhengzhou stations, so as to describe and analyze the annual variation characteristics of precipitation in Zhengzhou. The trend analysis uses R/S analysis method to show that the precipitation in Zhengzhou shows a strong anti-continuous trend. The cycle analysis adopts the Morlet wavelet analysis method, and the annual average precipitation shows the law of 6a as the first main cycle and 10a as the second main cycle. Mutation analysis was performed by Mann-Kendall method, which showed that the precipitation sequence in Zhengzhou had a mutation during 2013 and that the mutation was significant. The interannual change in precipitation maintains a significant upward trend after a brief downtrend at the breakout point.

KEYWORDS

Trend Analysis, Quantitative Analysis of Precipitation, Morlet Wavelet Analysis

CITE THIS PAPER

Hanzhi Zhang, Wenjing Zhao, Quantitative Analysis of Annual Precipitation in Extreme Precipitation Areas. Environment, Resource and Ecology Journal (2022) Vol. 6: 90-94. DOI: http://dx.doi.org/10.23977/erej.2022.060211.

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