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[1]ZENG Yingting,LI Cheng,HUANG Xinzhou,et al.Spatial and Temporal Characteristics of Extreme Precipitation in Fujian Province in the Last 60 Years[J].Research of Soil and Water Conservation,2023,30(03):203-210.[doi:10.13869/j.cnki.rswc.2023.03.034]

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Spatial and Temporal Characteristics of Extreme Precipitation in Fujian Province in the Last 60 Years

Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume: 30 Number of periods: 2023 03 Page number: 203-210 Column: Public date: 2023-04-10

Title:: Spatial and Temporal Characteristics of Extreme Precipitation in Fujian Province in the Last 60 Years

Author(s):: ZENG Yingting¹, LI Cheng², HUANG Xinzhou³, LIN Huiyang¹; (1.Fujian Meteorological Service Center, Fuzhou 350007, China; 2.College of Horticulture and Plant Protection, Yangzhou University, Yangzhou 225009, China; 3.Minhou County Early Warning Information Issue Center, Minhou 350100, China)

Keywords:: extreme precipitation; spatiotemporal change; atmospheric circulation indices; Fujian Province

CLC:: P46

DOI:: 10.13869/j.cnki.rswc.2023.03.034

Abstract:: [Objective]It is important for disaster prevention and mitigation to explore the new characteristics of extreme precipitation changes in the southeast coastal region of China. [Methods] Daily precipitation datasets of 67 meteorological stations from 1960 to 2019 were selected, and methods of climate tendency rate and Mann-Kendall test were used to analyze the spatial and temporal variation characteristics of four extreme precipitation indices, including the extreme precipitation(R95P), extreme precipitation frequency(R95D), extreme precipitation intensity(R95I), and extreme precipitation contribution(R95C). Meanwhile, the correlation between extreme precipitation indices and atmospheric circulation indices was also analyzed. [Results](1)tR95P, R95D, R95I and R95C had the increasing trend during the last 60 years, and their change rates were 24.90 mm/decade, 0.34 d/decade, 0.25(mm/d)/decade and 0.84%decade, respectively.(2)R95P, R95I, and R95C had abrupt changes around the year 1994, which changed from a relatively low(weak)to a high(strong)period. The mutation of R95D occurred in 1993, changing from a low to high period.(3)There was the significant correlation between the South China Sea Subtropical High Intensity Index, West Pacific Subtropical High intensity index, Northern Hemisphere Polar Vortex Intensity Index and extreme precipitation indices(p<0.05). Particularly, the West Pacific Subtropical High has the significant influence on the R95D after the year of 1994. [Conclusion] The results provide a scientific basis for ecological risk assessments of extreme precipitation in Fujian Province under the background of climate change.

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Last Update: 2023-04-10